Mercedes 300e idle adjustment Ie I have 91 Mercedes 300e high idle speed. the sensors were checked, the metering adjustment was changed on the ECU, the wiring is Nov 23, 2014 · Hi guys i want to adjust the idle mixture on my car, smells as though it's running a little rich. I disconnected the connector for the Idle Control Valve when the engine was running and at operating temp and the idle speed would drop to about 750 RPM's. I have also adjusted the co 'idle mixture' and this did not help. The adjuster "tower" came from the factory with a steel ball fixed in the top to keep us types from tampering with the adjustment. Original setting (on new EHA): depth from EHA body to adjusting screw is 6. 6- 5-speed Manual - 200K miles, 95 E320 Sportsline-sold, 2001 E320 4matic Wagon-sold Apr 12, 2023 · This thread: K-Jetronic WITH Lambda Overview and Adjustment and this video: were a huge help. ) Pic 3: Slacken the transmission cable all the way in. Sep 20, 2011 · As it warns up, the idle tends to move a bit but is fine. Customer: Check adjustment of the throttle cable, and make sure Feb 18, 2018 · Hello, I need help, I myself am from Russia, if I write something wrong, sorry! in general, there is a car mercedes w124, 300e 4matic, a performance for the North American market, the problem is in oversized idling, on a hot one - 970 revolutions per minute. I cleaned the idle control valve, tried to make adjustments to the cis, but no luck. First idle problem, my 1986 300E goes at 1000 rpm all the time in neutral at any temp. If the fix starts with an adjustment of any sorts, I'd suggest you keep looking and researching further. 1970 gmc 2500- 2002 gmc 2500hd duramax/allison-50s something willeys pickup-74 harley fxe-92 harley flhtcu ultra classic-2017 harley road glide special- 2018 road glide special-98 special construction harley powered. It drops to 600 RPM at a stop then will just shut down, like I turned the key off, no rough idle then stall. Feb 6, 1990 · I have a 1990 Mercedes 300E with 2. Prior to this, a mechanic made a ("slight") adjustment to the idle - thinking this would fix the high idle (against my advice). Mar 8, 2009 · It will run very, very rough all of a sudden at idle, and then if given throttle will stall. is it close to the idle adjustment screw? Thanks in advance. Put trans in Park and you should be idling at 900. Mar 17, 2018 · Hello all, My name is Christian and I am a young mechanic working for a repair shop. 91 1991 Mercedes 300E Idle Control Valve - Air Intake - Bosch, Standard Motor Products, Wells - PartsGeek The Mercedes idle control valve is used to regulate the speed of idle for your car or truck's engine. B. that was available in the rest of the world as a 300E-24 or TE-24 Oct 29, 2021 · Before we begin, please read this: if your M103 is having issues (stalling, idle hunting, flat spots, smoking, misfires, and so on. Feb 15, 2022 · Every Tuesday and Saturday, we strive to provide you the best in the business. Sep 28, 2019 · And if you‘re interested in proper AFM potentiometer adjustment, let me know. Jan 2, 2012 · The idle control valve has an impact here, and so does the fuel mixture adjustment. it's like it stumbles at idle. Idle goes up, that is a problem area. Valve - Bosch 3. Partsgeek offers replacements for the 380SL, 560SL, 300E, 190E, 500SL, 380SE plus more. My understanding is even if in the future I fix an issue which made RPM low I can adjust it back but for a time being I will have good RPM on idle. I recently joined benzworld. what is happening now is that when you start it up. I also measured the Duty Cycle and it's moving betwen 69% and 79%. Sep 5, 2005 · This process has to be performed systematically and the first thing you will need to do is adjust the minimum air. Nov 28, 2019 · Unplug your EHA at idle and see if the idle rpm's stabilize when warm. Nov 16, 2003 · 4. After driving for 10 minutes the car begins to run rough idle at low speed and when at stops/accelerating from stop and most of the time will stall at stops. XXV. Just my 2 cents, Nick Jan 29, 2009 · you cannot adjust the idle on a 300ethe beauty and the beast of it. At idle it reads between 4. The mechanic adjusted the idle while it was cold, so I believe its hard to start from getting too much fuel. Pull out the rod in the idle control valve until it is flush with the end of the unit or just slightly below 6. When the car stalls in D while driving and then stopping is a result of low idle. pdf), Text File (. Used pin 2 (ground)and 3 of x11 the only thing I am getting is 10% all the time at idle. You can change this adjustment and reduce your idle to the right level. With the Coolant Temperature Sensor connected, the idle is ~1500rpm. It does change the duty cycle, but only at idle. After about 1 1/2 min of driving, I try to accelerate from a stop and the car sputters, and coughs, and feels like its running on 5 cylinders. Quick visual inspection lead to me find leaking EHA. But adjusting it for temperature differential is actually compensating for the different densities of air at different temperatures! Current: 1989 300E Jan 16, 2003 · My idle speed (E220) is a little low. W124 300E '89 Thread starter Chemicalal Start date Feb 23, 2011; Tags MB Club UK is A Mercedes Enthusiast club run by enthusiasts for enthusiasts May 18, 2003 · The rough idle and surging is normally the "idle control valve" I talked to a mechanic and he said to remove it, clean it out with carb cleaner, then spray inside with penetrating oil. Jul 10, 2008 · However I have had an ongoing problem with the idle. Especially the headlight adjust lines and the vacuum lines that run across the bottom of the plenum chamber. 6 mm Current at actuator (only ECE/RÜF): ignition "ON" = + 70 mA idle, coolant temp. May 17, 2020 · Hi, Finally after a 7 day delivery from Germany i got the new temp sensor installed. instagram. The Idle valve is recieving a signal, but will not make a difference to the engines condition if plugged or unplugged. My idle speed seems to run a constant 1300 rpm Mar 31, 2006 · The rough idle could actually be due to many things. I would also adjust the idle mixture by turning the screws out until the idle speed starts to decrease, then back in a bit. Mercedes Ke Jetronic- CO/mixture screw adjustment(air-fuel ratio adjustment) Sensor plate adjustment👉🏻Don't miss https://youtu. The idle speed when engine is warm seems too low - sometimes I have to hold Mercedes 300E Q&A: 1990 Mercedes-Benz 300E 2. A. Runs great but at stopped position idles hard but not all the time. (Halfords have the Gunsons ones for £25 at the moment). Aug 30, 2012 · N. 70V to 4. Pics 4 & 5: Detach the throttle return spring and re-adjust the transmission cable until it pulls the linkage back into fully released position "under its own tension. Adjusting the rearmost screw CCW (outwards) didn't raise the RPM. Choose top quality brands Bosch, Standard Motor Products, Wells. After adjusting Air/Fuel mixture in an attempt to fix this, it wouldn't start. D. where the heck is the adjusting screw for the idle on this car? the repair cd says to turn the knob for idle adjustment on instrument panel to right. In my case, a slight tweak to the lean side (ccw) made my first W124 (86 300E) smooth out, idle like a sewing machine and have instant throttle response. There are laser pointers which can measure rpm if you put a small piece of white reflective sticker tape on the crankshaft, that way you can check the idle speed. Slowly Adjust the mixture control screw (3mm hex in the air cleaner) to get the highest idle speed possible without bogging down 4. At first I thought it was the transmission not going back down into the starting gear but then realized it is a gas issue. You need either a duty cycle multimeter or an Oscilloscope with the objective to adjust for 50-50 duty cycle. Oct 2, 2013 · The procedure on 'how to' apx adjust the a/f mix is in the forum archive. Since you don't have lambda, you can use the current flow to the EHA to set the mixture. You can't adjust it. Jun 23, 2020 · Hey enthusiasts ! been a while, cars been running great, but. The car idles a little rough when stoped in gear. Clockwise to increase idle, go a little at a time. check idle with both aircon and wheel lock position and further adjust CO 6. As an Amazon Affiliate, I earn from qualifying purchases *Shop Amazon for Car Parts & Accessories -* https://amzn. Last year I took the car to a local Mercedes mechanic and he said he found a broken vacuum hose and the problem seemed to go away, but it came back. Mercedes Rough Idle & Shaking. Once it warms up all the way the idle sits at about 500 rpm. Jan 31, 2012 · Basically my 300E is having an idle problem. Easy to use a non-lit propane torch. The idle in these cars is controlled electronically. Took delivery of a 1987 300E last Saturday and am getting a 1985 300SD in a few days. I'd also suggest you do a search on the forum (using the search feature) for Air/Fuel adjustment. To get to the idle control valve, remove the air cleaner. A 1989 300E w124 with 67k miles. May 13, 2003 · Hey folks, I am having a problem with a 1989 300e. com/fix_your_mercedes/Pa Dec 28, 2012 · 89 190E2. Clean the idle control valve with solvent, Kroil worked best for me, to free up the valve 5. Flat out, you are running rich as mentioned in other post. com/fix_your_mercedes/Patreon:https://www. com FREE DELIVERY possible on eligible purchases Jan 12, 2014 · I have an issue with rough idle and hesitation during acceleration on my 1990 300E w/90K that I haven't been able to fix. Sep 22, 2001 · Should be 750 rpm or so in neutral, 500 rpm in gear when warm, higher when cold. The big screw that you are referring to is the idle air by pass and need Jan 21, 2009 · The car is staring fine even with our cold damp uk days. It doesn't stall but doesn't sound too happy there. Using the adjustment screw near the throttle body you adjust the mixture till the car fluctuates aroun %50 duty cycle. Next hook up a tachometer and restart the engine. If you hear it click with power supplied, it's working. This is assuming your duty cycle is close Mar 8, 2010 · Recently re-soldered my Idle Control Unit, which seems to have corrected my high idle. Start the engine and let it warm up to operating temperature then shut it off. The engine is a m103 found in the w201s, w124s, and w126sThe car is a good used daily driver with 460. Nov 25, 2008 · You should have purchased BP5EF plugs and not BF. when I put the swith on only I have 69. I found a number of issues, but everything I tried I couldn't get the idle down. Started up fine every time. Is this worth doing without the other idle adjustment (where I'd may have to remove the ball bearing etc) and is this worth doing without using a meter. With A/C on, the computer will compensate for the additional drag. The problem occurs as soon as coolant temp hits 40 at which point the idle speed is supposed to drop from 750 to 500. 992 24-Valve Naturally Aspirated DOHC GAS Bosch Idle Air Control Valves precisely adjust the amount of air allowed into the Jun 7, 2003 · I want to adjust my transmission ! Hello! What an interesting point that of yours! This is something a very few might know about. 00V to about 5. Sep 23, 2005 · if they are talking about the idle mixture control adjustment on the fuel distributor assembly, you need a duty cycle meter connected to X11 pin 3 (pin 2 is ground), and when the car is fully warmed up (80-82C) with AC off ('0') and all accessories switched off, you adjust this with a long 3mm allen wrench inserted thruogh the rubber grommet on Nov 21, 2005 · The most likely cause of rough idle and stalling at closed throttle is the idle air valve. Nov 29, 2006 · Help adjusting mixture I got a multimeter yesterday at sears with duty cycle on it, I am trying to adjust the mixture. My Chilton manual didn't mention it either. This confirmed for sure my high idle problem is from Throttle position switch. Apr 18, 2011 · I've been chasing a rough idle/miss problem that happened suddenly on my 1991 300E. Nov 22, 2003 · Brandon 2008 S550 1957 Dodge D100 1967 VW Microbus 21 Window 2001 Suburban 2004 Beach cruiser bicycle-----GO DUKE!-----"It cannot be emphasized too strongly or too often that this great nation was founded not by religionists, but by Christians; not on religion, but on the Gospel of Jesus Christ. I have an idle problem with my elderly fathers 1986 SEL420. Mar 12, 2009 · Hi Peter, only adjustment you can make if the ancillary components are ok is to the mixture adjustment screw, as mentioned in the top of the air filter, using a 3mm allen key. txt) or read online for free. When you unplug your EHA, you are breaking the lambda control loop so if there is any issue in the emissions system, it may stabilize. 300E -88 High idle - solved! Jan 23, 2004 · My 380SL has been plagued by a lumpy or "hunting" idle since I bought it. Take the time to read it. patreon. We didn't clean the valve by lack of the required product but it seemed clean. Jun 24, 2022 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Jan 7, 2015 · 2010 glk350-86 300e-88 300e white-66 220seb-74 230- 2012 chevy cruze eco wifes commutor 40plus mpg on regular. Any idle speed increase will indicate a leak at that point. A full turn on the A/F adjuster nut is a huge swing. sometimes i get the 85% fixed thing. If it varies, car dies sometimes when coming to a stop, or idles rough, check the idle valve -- there are a large number of posts concerning idle problems on these cars! Feb 12, 2011 · Is there a device that should increase the idle speed when in Drive that has gone faulty? or is there some sort of adjustment needed somewhere? Cheers. Big deal. If I stop the engine and start it again without touching the throttle the idle speed is perfect at about 700 rpm but as soon as I have touched the throttle the idle is stuck at a high level. I recently purchased the car and installed new plugs, cap and rotor button. If the car is a 86-89 there is an electrical solution that adds about 50rpms. Unless your vehicle was retrofitted with the old idle adjustment valve and ICV removed (pre-84), idle speed cannot be adjusted, only affected by failed componenets. When I start up the car, it idles perfect, it goes up to 10,000 rpms for the first minute or so and runs fine. 35V Jun 28, 2005 · 300E -88 High idle - solved! Checking the EHA I noticed that the adjustment screw has probably been adjusted several times. So far I replaced the fuel filter, fuel pumps, oxygen sensor, coolant temperature sensor,and EHA valve. 90V and at 2000rpm it reads around 8. * The nominal idle speed is controlled depending on temperature, between 1200 RPM at about -23°F Nov 12, 2019 · Learn how to clean a dirty, clogged idle control valve in a Mercedes engine with Monkey Wrench Mike. After much testing I decided to replace the fuel distributor with a warrantied used one. good idle quality generally means a slightly higher CO at idle. Any advice would be appreciated. The idle adjustment is there to set up the injection system, then after that you don't really mess with it. . You can also measure this from the EHA also. There is a lengthy posting by (forgot his handle here) who showed us how to adjust it. I suggest marking the starting point. I ended up adjusting my original valve and everything is good with the world again. Nov 7, 2024 · Thank you to all that helped out with my 89' 300E idle, start, stalling problem. ) and on a part with its manufacturing variability, then I think the the adjustment most likely is a bit more complex than just a simple depth measurement like "one glove size fits all", especially that the EHA is Nov 29, 2010 · Although I have a different engine, adjusting the IP timing back to specs (from 24 degrees to 26 degrees) finally removed my idle shake. I run the Denso's in all three of my Mercedes and have no problems at all. It won;t idle when cold, and idles at around 1200-1400 rpm when warmed up. Mercedes Ke-Jetronic - The EHA/about the adjusting screw#viralvideo Instagram:https://www. i used the dash board economy gauge to adjust the air fuel mixture, as i turned in clock wise till Sep 18, 2004 · Basically, I just connected the idle position with a wire and achieved perfect idle. Next step I do is to change vacuum pump. Resolving Mercedes M103 idle issues - Free download as Word Doc (. You need a co meter to make this adjustment. Doesn't idle well 'til warmed up to around 76-80 Degrees then everything is fine. Try it as an experiment. It is a 20 minutes job and anyone who has a high idle should do this before throwing parts like OVP, ICV, and ICU. Don't start messing with idle adjustment, or mixture adjustment until you cure the leak. The important thing to ensure is that there are no leaks in the rubber piping that goes to and from the air idle control valve, the crankcase and the air flow / mixture sensor (plate) assembly. one other expensive problem that takes about this amount of time to occur is the failure of the thermostaitcally controlled addition air valve. Fast Idle Control (FIC) Solenoid The fast idle control (FIC) solenoid helps maintain a constant idle speed while the air conditioning is operating. Turned out that I had simply adjusted it to Lean (left). Jun 2, 2017 · Adjusting that screw will cause your idle to go higher or lower so that might be where some claim its an idle mixture adjustment. After each adjustment wait 5 or 10 seconds for the idle mixture to stabilize. Mar 2, 2021 · I see you are flying the Canadian flag. it either works or it doesn't. Adjustment of the KE-Jetronic, and in particular EHA - is very difficult process. I checked the plug wires with a meter and they are fine. Jul 13, 2014 · I am working on 1985 Mercedes 190E 2. So. On 1986/87 cars the specified idle setting is between 5% and 15% greater than that at 2500 RPM. Here was the problem: 89 300E, 62K, regular service: Car started hard, hot Apr 2, 2009 · I want to clean the idle control valve but I couldn't find it. td-class/1231077-fuel-mixture-adjustment. Mar 11, 2002 · Unfortunately proper setting requires adjusting the fuel mixture at the same time and that requires a gas analyzer as there is no electronic control on that motor. : Yesterday a thread appeared here in the 126-forum about a high idle / idle “creep“ that was allegedly caused by a faulty AFM Jun 4, 2009 · M103 EHA and CO Adjustment Issues (KE Jetronic Experts Please) - PeachParts Mercedes ShopForum EHA Valve Mercedes 300E EHA Valve - 300E E. Or perhaps this is the stage where Mar 17, 2014 · Your Mercedes 2002 SL500, 216 CL500, all fully loaded Mar 17, 2014 Would the control rods for the idle adjustment be correct . Last week I noticed a fuel smell coming in through the vents. This I determined by disconnecting the valve, and it sped up another 600 rpms. Oct 5, 2007 · i just bought a 1988 300e and it idles at about 300rpm (barely idles) can anybody tell me how to adjust the idle? im used to a 400e, that idle adjustment was easy but i dont see any way to on this car. Here's the problem: The 300E starts fine then idles at 1500-2000 RPM when it warms up the idle drops to 1200-1500 RPM. I will outline all that I did in the hope that it helps someone else, I spent over 12 hours working on it and hours reading on the net. Tried adjusting lambs after getting the ecu in and the meter is jumping around between 60-90%. It would start OK and run fine; however, the idle would not get below 1200-1300RPM's. 000km on Mar 24, 2009 · Also, where do I adjust the Idle Speed?-----Here is a summary as of 4/28/2009 Symptoms = Rough Idle, Rough start, shaking while idle, stalling, sticky/hard throttle, delay when applying throttle input. 6 - JustAnswer Feb 7, 2011 · Idle speed. Its possible the car started with the help of the cold start injector and once it timed out, the mixture was too lean to sustain running at normal idle. I would take it to a certified mechanic that has a machine to test the mixture and make sure it's correct if so then have him check for vacum leaks and if none present then have him make a slight adjustment to the idle. 6 1991? It has rough start low idle runs better after 10 min warm up in the mornings. check for leaking vacuum tube from fuel pressure regulator to cylinder vent. It may not though, since you are saying it is also not stable when cold. I put a diesel engine in my MB W124 300E, and it is too slow at start and up the hill, needing such adjustment. 9% But whatever I do trying to adjust the fuel mixture nothing changes. (Accelerator control linkage ) . It has the diagnostic port with pins 2 and 3 that people use to adjust duty cycle but I also have a Jan 17, 2023 · We plugged the ICV back in place and put a voltage source on its pins. I gave up and sold mine. 2L 6 Cyl 104. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Sep 28, 2018 · 1976 Mercedes 240D (Sold) 1985 Mercedes 300D Turbo Diesel: 500,000KM 1986 Mercedes 300E (Sold) 1988 Mercedes 300E (Sold) 2002 Mercedes C240 (Sold) 2008 Mercedes C350 4matic A great site for purchasing industrial rubber products! Industrial Rubber # Mar 12, 2010 · 89 300E "Benzer1" 15. The idle will fluctuate between about 500 and 650 RPM, and is worse in Park or Neutral than one of the drive gears. The term vacuum leaks is in some ways a bit misleading. Do not adjust the lambda tower adjustment without the lambda meteryou are asking for a flooded engine if you turn it clockwise and a lean engine if you turn it counterclockwise. W124 E,CE,D,TD Class. The engine wouldn't start at 0V but started quickly with 2V. Feb 23, 2023 · ㉦Mercedes Ke-Jetronic㉦ - The Initial mixture adjustmentГ/Goes for both K- and KE-Jetronic#viralvideo Instagram:https://www. In fact, the only remedy I was looking for is to change my differential. Jun 16, 2002 · The manual says to adjust idle to 700 in gear, engine hot. Each component within the system that make up the idle control must be functioning properly. - Sep 28, 2008 · I have a 1991 300E that had a high idle problem. The idle speed adjusting screw allows adjustment of the airflow into the intake manifold. Cannot find a way to ajust it. I no longer had some cylinders not firing as before, but the idle was still crap. It would stay that way until I restarted the car. The oxygen sensor relays Aug 11, 2004 · Pics 1 & 2: Slacken the throttle cable and re-adjust until there is only about 2mm of play in the accelerator (felt by hand. Mar 18, 2022 · Mercedes Ke-Jetronic - A special video on how to adjust the mixture on K-Jetronic#fixyourmercedes##mercedeskejetronic##adjustingkjetronic#Instagram:https://w Apr 30, 2004 · have 82 380sl with high idle 2000 rpm. I don't know how to adjust the screw, it seems like the middle part is loose when the lock is turned out. Increasing the voltage increased the idle RPM until about 1200. _____ IDLE SPEED AIR VALVE 190 & 300E Series The idle speed air valve has the following functions: * The electronic control unit supplies a specific voltage to the air valve which determines the respective valve opening and thereby the engine speed. Where abouts is the idle control valve please? Hi. ) you need to identify the underlying issue causing the problem. Seal tightly. Acceleration from stop/idle was strong, ran well in 100+ degree weather for 90 miles to work and back. I'm a little confused though, the car has no O2 sensors that I can see. Oct 9, 2007 · The 116/117 does not have an adjustable idle control. Moving toward our YouTube channel’s third year of Classic Mercedes Benz videos Jun 16, 2013 · The idle control valve adjusts the engine rev's for a cold start and on later models adjusts the idle when the engine is warmed up. The rough idle can be a result of many things like faulty engine mounts or a secondary ignition problem. How could I fix this problem? Mechanic's Assistant chat. html got the idle down to almost normal by adjusting the Air Flow Meter Oct 27, 2009 · I have a 1990 300E 2. The adjustment is set at the time they are made. Dec 9, 2024 · So I adjust it to around 700RPM ( with 2 pin connector on ) and keep looking to resolve my problem with smoke. Mar 8, 2013 · The circled item is the ICV (idle control valve). 6 engine. Once going the car runs fine. Buy a 1991 Mercedes 300E Idle Control Valve at discount prices. H. My last Mercedes was a Unimog 404. Mercedes Cars for Sale Jul 18, 2024 · Hello everyone, I have just joined but I have stalked this forum for a while. The "book" says I can adjust the idle by the idle speed adjustment screw, but this has no effect (provided I'm adjusting the correct one). The sections that are not visible get brittle and break. html If there is how to fix your Mercedes and you W124 230e M102 1992 Mar 2, 2017 · I'd like to add a comment that hopefully won't be rubbing peoples noses in the dirt. I assume that reducing the the setting would lower rpm which isn't what I want. When I press the diagnostic button 2-4 seconds, the led blinks once, but when I press it again per BOSCH KE3-JETRONIC MIXTURE ADJUSTMENT it just blinks again instead of coming on solid, so I don't get it. 5T (220,000 mi) 2014 Tesla Model S 85 (136,000 mi) MBCA member #2 Sep 28, 2004 · That adjustment is really only an idle adjustment. With the motor running, check all the vacuum connection with an un-lit propane torch. Oct 7, 2010 · Just some more numbers on a 89 300E Mercedes Benz Model 124 with M103 engine 10% tolerance from Idle to 2500 RPM until about the 3rd adjustment (or approaching 50 Aug 24, 2003 · How do I ask a question here as I have a few that I would like to find the answers to. That is, if the duty cycle at 2500 RPM is 40%, at idle it should be between 30% and 50%. " Dec 18, 2008 · I didn't notice when getting it because I was in a hurry but a check on EPC the description of the hose is "Hose, from cylinder head to idle air distributor" There is also 2 other hoses 1 goes from the bottom of that fuel distributor/throttle body to the idle speed actuator and another comes out of the idle speed actuator to the intake manifold. * The nominal idle speed is controlled depending on temperature, between 1200 RPM at about -23°F (-30°C) to 900 RPM at Oct 12, 2004 · I just got back into the Mercedes fold. 89 300E, Rough Idle, hard start, stalling solved, thank you all Nov 23, 2005 · Buy Bosch Automotive 0280140510 Original Equipment Idle Air Control (IAC) Valve - Compatible With Select Mercedes-Benz 190E, 260E, 300CE, 300E, 300SE, 300SEL, 300SL, 300TE: Idle Air Control Valves - Amazon. Feb 2, 2011 · It could be years of crud inside not allowing it to consistently manage the desired lower airflow for hot idle. It does not stall, and the Engine has 500 rpm at idle and runs rough 1987 Mercedes 300e) in park,rrpms at 500, I have no pedal to speak of for Lou Palomino 25 yr auto tech, 20 for Mercedes-Benz Apr 20, 2009 · I read that u can do it with multimeter using pin 2 for ground and pin 3 for + so i finally decided to go for it first i tested my 190E and see what she says. 2003 Gray Mercedes ML350 - 122k Dec 6, 2024 · 3. problem still there! My latest part swap is a rebuilt fuel distributor. Feb 7, 2009 · After a lot of time I found out that the valve is "adjustable" and making that adjustment solved my high idle speed problems. the neat thing is, i think, is that the car won't run right unless you can pass emissions and you will know it before the test. be/7Dp5lQKcY2k#viralvideo In Nov 2, 2013 · Mercedes 190E idle speed ICV on and ICV off Nov 6, 2010 · 190 & 300E Series The idle speed air valve has the following functions: * The electronic control unit supplies a specific voltage to the air valve which determines the respective valve opening and thereby the engine speed. Apr 29, 2002 · I have a 86 300E. now my son's 1992 300E has a issue with belt squealing only with A/C on, that's what he's complaining about. Plug it back in, and it went down to 1100 rpms - no hunting. com/c/f May 7, 2007 · The idle speed screw is actually an idle airflow adjustment. Starts on first crank. My Mercedes is idling roughly, time to clean out that Idle Control Valve (ICV)! Please do hit that like button and subscribe to the channel for more car rela Mar 14, 2021 · I got a Mercedes Benz S124 in my garage today. If the car is turned off, it's almost impossible to start again for 25-45 Jun 19, 2021 · However, if the adjustment is done based on flow thru it set for a certain set of parameters (current, pressure, temperature, etc. to/3i7u8ZUMy Aug 26, 2010 · Well guys, I played with the Lambda and richened it up last night. Didn't make any difference to the high idle though. Feb 19, 2013 · Mercedes-Benz Sedan / Coupe / Wagon Forums. 0L, but the US 300CE cars had a M104 DOHC 3. Apr 19, 2010 · Air is added by the IAC valve to maintain the set lowest idle speed at which the engine can operate. Oct 18, 2019 · My 300E has an idle speed of about 1000 - 1200 rpm when warm. Sep 22, 2005 · Is this due to the crack in in the CO adjust housing. Is this crack a source of vacuum leak? It seams I fixed one problem and really exposed another. H. The car will start ok cold. This is a doc using significant contribution from other authors - I claim no copyright or origination for it. ADJUST CO using hex wrench counterclockwise until desired smoothness ia attained to richen fuel (this will elevate the air/flow plate to increase fuel flow) 5. Nov 17, 2002 · No idle adjustment, the system is self regulating. 924 Uncorrected the following tests should be performed before attempting to adjust the idle mixture. 0L CIS-E setup. Would you please help me do it? Mar 16, 2010 · I have a 1989 Mercedes 300E, hard start and low idle when cold - once it gets to 80degrees, the idle is high 1200+. The part that the duty signal goes to is the EHA. 6 mA Mar 18, 2010 · The idle adjustment is done with the screw between the IP and engine, it has a (14mm) lock nut at the bottom, I use a three inch socket to reach the lock nut, then just a flat blade screw driver. 040 So, my laundry list: 1) clean idle control valve (icv--maybe bad) 2) clean o2 sensor (mpg is ok, o2 probably good) 3) adjust EHA (or fix vacuum leak) Jun 7, 2011 · 1991 300E 170k Car is hard to start hot and if left for a few days without running. Oct 21, 2005 · Wrench goes through the hole in the center of the housing top. If you disconnect the hose to the vacuum governor, engine speed should increase to 1200-1400. Place the nozzle at all the vac connections and also at each injector. As soon as the used FD was in I still had an idle/stumbling problem, but it had changed. If you adjust the throttle cable (knurled adjuster at the engine end) you can increase the rpm. May 24, 2012 · Have a look at the idle control valve and hoses and check for vacuum leaks in all the vacuum lines. Dec 17, 2002 · If your car has idled normally for however how long, and the idle suddenly changes--you will have a vacuum leak. 6 - JustAnswer Aug 3, 2017 · PeachParts Mercedes-Benz Forum tech-help/369277-89-300e-w124-m103-high-idle-solved. I never came across proper procedures for that adjustment here at Benzworld. 010. It could be some of each issue. 1993 Mercedes 300E : 3. If it is allowed to idle, it sometimes will recover to a more normal (though rough) idle and allow for acceleration. You will see a cylinder about 4 inches long? It is shaped like a "T". doc / . Also, if I remove the OVP, the vehicle will run and drive normally, though the idle is at about 1,000RPMs. Feb 27, 2017 · I have a 1991 Mercedes 300E and need some help! About 3 months ago I was driving and noticed it seems to chug or stumble on acceleration. With a cold start motor and a 39 ohm resistor to ground from the green/red lead of my two point connection, the idle is right at ~800rpm. The vehicle is low KM - 156,000 KM, however it has barely been used in the last 5 years. Can anyone show me where it is? See photo. Hello: I have a 1986 300E that is my first Benz, and I have owned it for a little over a month now. S. My idle seems to be just a tad low making it run a little rough. Any suggestions? Jul 27, 2005 · 1999 MB SL500 (110,000 mi) 2004 Volvo V70 2. I think it should have more go in it and am considering making he EHA adjustment. With the air cleaner assembly removed the slightest pressure applied to the metering plate cleans up the idle, the economy gauge pegs to the left, and the idle goes up maybe 50 rpm. The system has to work right to be right. P. Sep 2, 2005 · The engine idle (warmed up) was at about 1400 rpm before I started. Its model #82400. It could also be that the IACV is getting old and tired and that is perhaps where Carls suggested adjustment is helpful. It has stalled on her at least once. Mar 1, 2020 · Buy eGang Auto Idle Air Control Valve For Mercedes-Benz 190E 300E CE SE S SEL TE SL 0280140510: Idle Air Control Valves - Amazon. Mar 1, 2012 · Does anyone know how to adjust the idle on a 300e 2. I purchased my first Mercedes. I have searched the forum but they were talking about the electronic idle control unit, not the idle control valve. Dec 11, 2004 · The best way is to run a duty cycle using pin 3 of the diagnostic port near the left fender. html If there is how to fix your Mercedes and you Dec 17, 2002 · If your car has idled normally for however how long, and the idle suddenly changes--you will have a vacuum leak. Jun 16, 2015 · With the IAC disconnected on two differenct IAC's, the idle drops to ~1000rpm. MB calls it the CO at idle adjustment. May 12, 2011 · I have recently acquired a 1990 300E for quite a reasonable price. Cheers Aug 4, 2013 · Adjust the average at idle speed so it is within +/- 10% of the reading at 2500 RPM. The valve is located on the intake manifold, in front of the mixture control unit. After getting it out of storage it started fine but is having an i Dec 6, 2007 · As it warns up, the idle tends to move a bit but is fine. So car is at 140K miles now, I just checked under the hood and all pulley's are straight and true while running, with A/C on no belt slippage at idle or revving engine. I shut down the engine to do a little research as to how to lower the idle speed, and it seems that the idle is controlled by the ECU and it is not Feb 6, 1990 · I have a 1990 Mercedes 300E with 2. Look for vacuum leaks. Oct 11, 2010 · Idle speed is controlled by computer. There is no alternative answer. Having first confirmed that my system and control fuel pressures are ok, the WUR is doing its thing, idle good, no air leaks, timing ok, etc, all that was left was to adjust the mixture. Don't have Lambda sensor/exhaust gas sensor, MB computer, etc Dealer was supposed to fix the idle speed. Does the car idle the same speed with the idle air valve unplugged? If so my guess is that its stuck. Try cleaning out the inside of the throttle housing and idle control valve using carb cleaner. 2L HFM-SFI system shared with the 94-95 E320's previous years 300E / TE had the M103 SOHC 3. where the heck is the idle adjustment on the instrument panel please help. Would like to just bump it up about 50-100RPM. 437. A T-handle allen makes it easier to keep track, and a ball head makes it easier for the hex head to fit into the adjustment screw (and reduces the chance of messing up another screw). Also how do you adjust the sliding roof up at the back, can see adjustment screw at front. The third is the fuel mixture adjustment. com FREE DELIVERY possible on eligible purchases Jun 6, 2020 · Mercedes-Benz Sedan / Coupe / Wagon Forums. Craftsman sells a $30 multimeter that runs duty cycle as a %. in the USA, a 1993 300E or TE would have had the 3. It's an 88 300ce. It sometimes goes from 700 rpm to 2000 rpm, up and down and up and down staying at 2000 for a second or two and back down. I'm Jan 3, 2012 · I checked the idle control valve and it is working. That's why the steel ball over the screw, to keep you & me out of it. Are you getting current to the valve, though? Don't try to set the idle by farting around with the mixture. It could also be the idle controller not sending the correct signal to the IACV. 3 gasoline engine i replaced the engine after finding the cam lobs worn, however this replacement engine is running rough. Sep 27, 2010 · I have a strange idle issue and after intensive searching have yet to find a solution. Which demands the attentiveness and the presence of the certain knowledges. 6 california model and I'm getting nearly random data from x11 pin 3. Jun 12, 2016 · Does anyone know any easy way to turn up the idle on a 92 190E 2. The idle speed is moving in sync with the duty cycle %, slightly higher idle at 79% and slightly lower at 69%. the timing i am not able to check as it says somewhere that the 5 degrees before top. The car runs out fine, highway speeds are great. just gonna have to fix things to get it right. I have not yet adjusted the timing. Sep 12, 2005 · I was wondering if adjusting the rack screw could increase that at that time (when really warm, after a run--hence the shaking). Now with the high idle no longer surging, there appears to be a very slight stumble in the idle (I'm striving for perfection . Also ensure the air filter is recent and clean. . Jan 8, 2013 · Adjust the average at idle speed so it is within +/- 10% of the reading at 2500 RPM. In our DIY section is a link for "fuel mixture adjustment". docx), PDF File (. Anyway, you can also use Denso T20EP -U plugs. It sounds like the idle valve is a culprit. New plugs, dist cap, rotor and wires basically just 6 months agonot sure but i thnk the idle needs adjusting. +20 C = 2. 3L? Sometimes it is down to 500RPM w/ A/C on, in Drive. Jun 17, 2004 · The rough-idle-and-die is one of the most perplexing problems of the 300E. Which it runs smooth and strong so i did the same thing to my 300E it was reading between 5.
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