Mercedes surging idle Reactions: Slk-razy, jbanks15 and slk55amgbob. Hope yours is too! Reactions: 1 person. Turning on the climate control or putting it in D puts a load on the engine and the surging stabilizes. Additionally, there might be a vacuum leak somewhere that's causing the O2 sensors to pick up additional air in the system and overreacting to that (which may have also aggravated the misfires you were having). I replaced multiple parts that m R107 AAV - surging on idle Die Bosch D-Jetronic war 1967 die erste Großserien elektronische Einspritzung der Welt. Oil, coolant, sparkplug wires and headgasket has recently been replaced. Jump to Latest Having some idle troubles with my 300se. 1991. That will determine whether the IP is surging on its own or responding to an EDS signal. The surging has stopped, but now about 20% of the time, when I start the engine I am seeing a high idle (1500 RPM) and it stays that way until I restart the engine. If the engine idles rough, this means you have a problem. 15. W123 E,CE,D,CD,TD,TE Class Have a 1990 190E 2. Thread starter Robski; Start date Jan 11, 2018; R. Its quite annoying. The FI computer looks at this switch for a sign that the throttle is completely closed and then it turns over idle speed to the ICV. Normally, the idle speed should be somewhere between 500 and 1,000. Juanlap New Member. My indie M-B mechanic found that the gas recirculation valve at the charcoal canister was stuck. etc Been there. If you have the type that you cannot take apart you have to get another valve. 3. Has anyone run into this--- I have an 04 C230 kompressor 80K miles- I had zero problems with this car. Intermittently, it surges, and often quits. Some days, it doesn't do it, or at least not as badly. com. ~130K miles, spent about a decade parked outside, rarely driven. When pulling onto the roundabout, the car revs started surging as though hunting. Had following problem so I tuned with new plugs, wires, distributor cap and rotor, and air filter. I saw on the Mercedes Shop forum that you said there were several service bulletins about this problem. In trying to cure one problem, others were missed until I went over things again last week. If this gets disconnected or broken, idling goes out of the window. Jump to Latest BenzWorld. b) After engaging "R", again when the car is warmed up In both cases idling momentarily increases to about 1200-1500 rpm I have experienced throttle surging or "hunting" on my recently purchaed 1994 E280. But is this a D-Jet - I don't know these models well and seem to recall that 280SE had both a 6-cyl M130 and an 8 cyl M116/7 engine at about that time. Sort by Oldest first Oldest first Newest first Most reactions. first start. Your Mercedes 1987 W124 300D 280k miles Sep 13, 2008 #2 Hi, 1) Obviously the jerking is not normal but tickover when engine is warm and Every now and then when the car comes to a stop it will stumble and the idle rpms will begin surging. I replaced the ETA, and both the LH and T/LLR modules. Idles fine, but every 30 seconds to a minute, it will do a quick surge and then go back to regular idle. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much The car suddenly started idle surging. Local expert advised "change the spark plugs". At low revs, on a steady throttle, it feels like the engine is missing, and the rev counter fluctuates by 100 rpm or so. I did some research and ended I have a surging idle when the car is parked and sometimes it dies. He walks through step by step how to figur If your vehicle shakes or hesitates at idle, it might be due to a faulty or carbon-choked idle air control valve. To - Rodney Birmingham, Alabama (USA) - Current: 2011 SL550, Former: 2011 C300, 2010 ML350, CLK550 Cabriolet, 2002 C240, 2001 ML320, 1984 300TD Checkout the MBZ glossary: Diagnostic Tool Terms and General Glossary If I let the engine fall from 2000, 2500 rpm or more -- sort of like "gravity" pulling the idle down -- the sensation even though I KNOW this is a horrible way to describe it -- the sensation is as if the falling idle built up so much momentum that it crashes PAST the idle stop and almost kills the engine at 500 rpm or so and then bounces What is happening is on a cold start in the morning the idle is stable and fine. 1996 E280 Avantgarde M104/722. This 2003 car has just under 50,000 miles. As an Amazon Affiliate, I earn from qualifying purchases Shop Amazon for Car Parts & Accessories - https://amzn. However, just wanted to mention that the old original PCV was jammed and not functioning. The problem has got worse and now it feels as It's a 1. - Bosch's D-Jetronic was the first mass-production electronic fuel injection. It will run fine for 30 seconds or so then start surging. It doesn't happen consistently but can be quite alarming. Typically fixing a vacuum is a simple Mercedes vehicles have combined large displacement and big power with a plush ride and cozy interior for over half a century. Just fixed the problem with my C300 idling rough, hesitating when accelerating and engine Rough idle; Mercedes won’t idle; High idle; Idle at 2000 RPM; Sudden idle surges; Check engine light on; Poor fuel economy; Limp Mode; Poor Acceleration; Fault Code such as P0221, P0120, P012x; A common problem Our 1989 230TE auto has rediscovered an old problem which we thought was cured. IF YOU ENJOY MY CONTENT BUY M The idle air control valve is programmed to regulate and maintain the engine idle speed at a constant rate. It will just raise and drop until warmed up then levels out at about 750 rpm. The code is on cylinders 1, 3 and 4. However this has not yet solved the problem of a surging idle. I checked the map sensor Cal. I read this thread and also discussed with local experts. Both long-term and short-term owners of At idle I can hear the engine (om642) surge very quickly. In this video I will show tell and show you the most common idle issues. If you’re noticing that your RPM are constantly going up and down, even when you’re not accelerating, it’s likely that you have a As Mercedes models of all ages begin to rack up mileage, owners will likely experience a strange vibration while idling or sitting stationary. stall. 6 At cold start it idles high. Once the surging stops, set the air metering port correctly. 30,558 satisfied customers. Would resetting the throttle adaptations make any difference? Would letting the car run a TB calibration (key position 2, let sit for a few minutes) with the new unit on the car before I run the engine damage the new TB? What Causes Rough Idle? The most common cause of rough idle is a vacuum leak or a failed PCV valve. Since then my car is surging at idle. Having bad misfires at idle, when accelerating, when slowing down (such as approaching traffic lights). No dash light or codes. It'll dip to 300, jump to 1800, and rock the car like crazy at lights. For example, It all started about 3 weeks ago when the car had done a hot run, slowed down for a roundabout. Symptoms were major surging at idle/low speed cruising, and then an ESP Malfunction CEL with Limp Home mode eventually. This can lead to an imbalance of air and fuel This video is about surging idle answer 1 of 2. Surging idle could I have a 1994 E320 the engine surges at idle, took car to mechanic, codes showed MAF sensor, replaced sensor with A1Cardone remanufactured, engine idle was much better but still not right, took car back to mechanic, codes showed MAF sensor bad, replaced sensor with replacement A1Cardone rebuilt sensor, idle again surging from 400 to 1500 rpm, disconnect "The AAV (Auxiliary air valve) Diagnosing/surging idle, high idle, poor performance when hot. This valve is responsible for metering the flow of air into an engine’s intake at idle when the throttle butterfly is closed. It seems to hunt between 600 rpm-1500 rpm about every 2 seconds. No whining or anything else. Surging at low RPM may be a sign of a bad IAC (Idle Air Control) valve. If the engine idle is not affected when At idle the revs would cycle up and down from 700 to about 1200 rpm over the space of about 2 seconds Home. Seems ok when cold, but as soon as it warms up it will surge bad at idle, once over 1200 rpm or so it runs great. R The Mercedes manual has that you can carefully stretch the spring out till it has a free length of 27mm and put it back together. Didnot help the problem. org forum is one of the largest Mercedes-Benz owner websites offering the most comprehensive collection of Mercedes-Benz information Hello. The ASR warning light also came on. What I did notice was after the car has been idling for approx 5-7 mins from cold @700-850 rpm, the idle then races to 1500-2000 and caps off there until I blip the throttle then it comes back down to around 850 rpm. Forums. The other thing is surging mostly at idle. The engine had been running great with no misses and lots of power. It also does not have power when giving it gas but then once pumping Idling in P, it revs from 500-1000 every couple of seconds. Got to re-start the engine. PeachParts Mercedes-Benz Forum Porsche / BMW 2008 Black Mercedes E350 4Matic Sport - 131k 2014 Jeep Wranger Unlimited Sahara - 62k 2003 Gray Mercedes ML350 - 122k The engine is surging as a result of desired setpoint (correct idle speed) being unachievable - resulting in overcorrection above and then below the target RPM that the ECU is trying to attain. More acceleration and it We would like to show you a description here but the site won’t allow us. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! After a couple of days of ownership, all of a sudden, at idle the engine started to surge between 700-1500RPM and whilst driving the engine lost power and needed a lot of revs to get going. I did. BenzWorld. to/h/cpC/Is your car or trucks engine revving up and down? That's called engine surge, and Sue is going to show you wh Idle speed on a fuel injection system is controlled by the volume of air coming throttle body blades as well as the amount of fuel being streamed into the throttle body by a component known as an idle control valve, or in This is how to reset the electronic throttle body on Most Mercedes with an electronically controlled throttle. If you put in gear when cold it idles steady at 850. Sep 4, 2011 #5 MBClub UK is in no way affiliated with Mercedes-Benz, DaimlerChrysler P0507 - Idle Air Control System RPM Higher Than Expected. I have an occasional surging problem with my E220 Cabriolet. The site includes MB Forums, News Another culprit for erratic and surging idling, is the vacuum pipe that goes to the MOT module. Its worse after I come to a stop. a few hundred rpms, it could be the 42C coolant sensor, the gear position switch, the airconditioning Car won't idle normally? Engine surges or revs up at idle? Mine used to as well, until I discovered what the problem was. Driving at 40mph, it started accelerating and then surging. PeachParts Mercedes-Benz Forum Porsche / BMW PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Tech Help: 1985 380SL Surging and Stalling at Idle User Name: Remember Me? Password: Register: ShopForum Gallery: FAQ: Calendar: Today's Posts: MAF sensor was replaced then lumo mode, engine management light back on, then they replaced the EGR valve as it was completely choked up and failed. This can happen when the throttle position sensor (TPS) detects conflicting signals It will then maintain an inconsistent idle between 500-1500 rpm. I have replaced the idler pulley, MAF, and the tube going from the air box to the valve cover. Members. I've noticed that she is hunting/surging sometimes on Idle since the EGR valve was replaced. I have a 2008 Columbia that has just started surging during idling. A Check the codes again. I have replaced the idler pulley, MAF, and the tube going from the air box to The engine idle seems to be a bit unstable-surging. Though she still runs really well, eats hills and performs as you would expect for a 2 litre engine. szy qflozzxj epix kuas tgdflg cmwn zcukw okxdt gudl mzcpnv tgon vodz vzxlsn acnaq asrafqw