Stall - Mercedes-benz - E-class :: E320 Stalls At Idle When Cold
Dec 1, 2013
Car: 2000 Mercedes-Benz E320 (W210) 4matic
This car runs beautifully if the air temperature is above 60 degrees or so (maybe 65) Fahrenheit.
If the air temperature, however, is much cooler, and the engine has had enough time to cool to air temperature, it stalls. Here's the sequence:- Start the car. Car runs fine, sounds good. Initial idle speed about 1200-1500 RPM.- Wait for car to warm up for a few seconds so it settles into normal idle. Idle speed settles to about 800 RPM after 5-20 seconds, depending upon air temperature.- Shift car into gear (D or R - doesn't matter). Idle speed drops to 500 or so, then the car stalls.- Restart the car. Allow it to warm up significantly (how much depends upon air temperature). - Shift into gear (D or R). Engine idle speed drops a bit, then recovers to ~800 RPM. No problems after that.
If it's a little cool (55-60 degrees Fahrenheit), I can drive off once the engine temp gauge needle rises a few degrees (45-50 degrees Centigrade).If it's around freezing (20-40 degrees Fahrenheit), I can't drive off until the engine temp gauge reaches nearly 80 degrees Centigrade.
If I'm on a hill (pointing down), I can start at a slightly lower temperature by allowing the car to start rolling as soon as I shift into gear. In this case, there's less resistance, so the idle speed doesn't go low enough to stall the car. If I am on a level surface (or pointing uphill), 80 degrees Centigrade seems to be almost a magic number when the air temperature is below 40 Fahrenheit (near freezing). When the needle is showing about 78 degrees Centigrade, the car will still stall. When it reaches 80 degrees Centigrade, the car is fine, and will not even come close to stalling when put in gear.
ONE CONFUSING VARIABLE: When I took this to my mechanic, it didn't exhibit the problem for him. When I picked it up (about 30 Fahrenheit), it stalled. He came out and started it, put it into gear, and it idled without stalling. I got in and let him watch while I got in, started it, put it into gear, and it stalled. We have no explanation as to why this would be any different (we tried several times, varying techniques, brake pressure, etc., with the same confusing results).
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Hot or cold car always starts,Idles perfect , then RPM drops, Idles rough and stalls. Econometer moves to Red area.car will easily restart and drives well,it also idles well. Once engine is shut down, even for a short while, It does the same thing again. Car is used for short trips. Ambient Temperature 80 degrees. Once running car is perfect at all speeds and idles smoothly. Hero 1987 MB 560 sel ....
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when the temperature is above roughly 60 degrees, I can drive the car for a short while, even a few miles, and it will start to sputter and eventually stall. At that point the car won't start, it turns over fine, but sounds like it's not getting any gas. If I wait 15-20 minutes it starts fine and will repeat the same process. Is there some temperature sensor or something that prevents the engine from starting after it gets hot, or is it something else. The temperature gauge doesn't indicate the engine is hotter than normal. I've taken it to my car shop twice and they haven't found anything. 1991 mercedes e300...
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