BenzWorld Junior Member
Date registered: May 2008
Vehicle: 1996 MB E320, Surly Steamroller
Location: Baltimore, MD
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96 E320 Cold Start issues. Stalling under throttle, misfiring, low idle, etc...
I've spent hours of searching these forums for my specific symptoms but only came across a few different threads with similar symptoms.
One day driving home, my car felt as it if was running on 5 cylinders (misfiring while driving). I pulled off, shut the car off, restarted it and the misfire was gone. CEL was on./ Later I checked the code(s) and came up with a Cyl 6 misfire code only.
Since this happened, on cold starts (any cold start, not just overnights) the car idles very low and if I naturally press the throttle pedal to try to raise the rpm, it dies, sometimes taking several times to restart but usually will restart the next try with the same problems.
It doesnt have anything close to a warm-up or cold start high idle like I think I remember it having. If I feather very lightly the throttle, it will raise the rpm. If I hold the throttle at half way while starting the car, the engine will sputter exactly as if it was misfiring up until aprox 2k rpm and then it smooths out. No smoke. No puffs. Not too bad fuel smell except when it dies and may take a few trys to start.
I am going to replace the plugs tomorrow. Car has 128k on it. I dont know much history... not sure if the MAF was replaced. This has been happening for several months but typically is worse under 50 degrees. Started in early winter. I am hoping I can pull the plugs and coils and clean it all up while I replace the plugs and clear codes and reset battery (disconnect for 10 min, reconnect). Any ideas?