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E320 stall in cold weather
My Mercedes dealer was unable to diagnose a problem with my well-maintained 2001 E320 wagon I have during the winter. It has 150,000 miles.
When the temperature is below freezing, the car starts fine, but stalls once I put it into drive, even if I let it warm up beforehand for five minutes. It takes another five minutes or so before the car will keep running once I put it in gear. I once let it run a full 15 minutes before I put it gear. It tried to stall even then, but didn't. Once the vehicle drives off, there's no problem until the next morning. The dealership says it is NOT the cold start valve. No error codes appear, either. They raised the scary prospect that it could be transmission related, but it was just a guess. Any insights? |
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Dealer techs are complete idiots. Remove and clean your throttle body.
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Thanks ... would be great if it is that straightforward. Could you elaborate? Why wouldn't it generate an error code?
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If you don't work on your own car find a competent MB independent shop and avoid that dealer. With just a minimum of effort they should be able to figure this out. My guesses are dirty throttle body, bad engine coolant temp sensor or bad MAF sensor in that order starting with the least expensive option. Good luck
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What t said - clean throttle body. Pretty straight forward job.
Another symptom of dirty throttle body (specifically on BMWs) is that as you come to a stop and the car idles down it becomes real rough and almost shuts off before it settles down.
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Jim |
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I would definitely clean the throttle valve since it’s quick and cheap, but I doubt it will solve the problem. |
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Does it jolt to a stop when putting into drive or reverse? Or does it just calmly shiver and shut off?
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-diesel is not just a fuel, its a way of life- '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k) |
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mot
mot valve also unhook lines spray cleaner,and let set
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1999 w140, quit voting to old, and to old to fight, a god damned veteran Last edited by oldsinner111; 06-20-2019 at 12:21 PM. |
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I have seen this issue too, torque converter clutch was locked on. replaced with rebuilt one with the sonnax kit already in there, And that car shifted nothing short of magic level good.
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2012 BMW X5 (Beef + Granite suspension model) 1995 E300D - The original humming machine (consumed by Flood 2017) 2000 E320 - The evolution (consumed by flood 2017) |
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Some people on the internet are complete idiots. This car uses a drive by wire throttle and does not have a hard throttle stop for min air nor an idle air control valve. This means that even if the throttle blade is sludged up, the computer will command the throttle to maintain proper idle speed even under load. As others have stated, it is likely the torque converter clutch sticking on when cold. You are also likely to have somewhat rough down shifts when coasting to a stop and a light throttle vibration around 35 - 40 MPH. Have a look at the attachments in post 3. https://www.peachparts.com/shopforum/tech-help/349697-engine-stalls-when-cold.html Also go to the SONNAX web site and look up info on the 722.6 Mercedes / Chrysler transmission. |
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And no the sonnax kit won't fix this issue. The TCC problem does not cause stalling in cold weather.
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.....idiot....daft......reminds me of Thanksgiving dinner at home with the family
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0o==o0 James 4:8 "...let us put aside the blindness of mind of those who can conceive of nothing higher than what is known through the senses" -Saint Gregory Palamas, ---Discourse on the Holy Transfiguration of Our Lord God and Savior Jesus Christ Centrally located in North East Central Pa. |
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Actually the torque converter can cause a cold stall. That's what Sonnax calls the problem.
https://www.sonnax.com/tech_resources/22-mercedes-722-6-cold-stall-tcc-shudder-part-1
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Prost! |
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Like I said it is easy to clean TB on this application. That is what I would do first.
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Jim |
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