BenzWorld Junior Member
Date registered: Jan 2011
Vehicle: 1995 Mercedes Benz E420
Location: Martin, TN
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95 E420 Acceleration and idle issues
Hi, folks, I'm new to the forum, but I've been reading articles here for the past few days while dealing with a persistent issue in my 95 E420. The problem started just after New Year's Day after I went and filled up my car with premium. On the way back to my apartment my car suddenly started to lurch at 1,000 rpms and wouldn't go faster than 20 mph. I pulled off to the side and shut the car off thinking it was a random hiccup since my car has had rough idling issues before which would cause it to die while stopped. The issue persisted all the way home and has been a thorn in my side since. It isn't an issue that occurs only when in drive, it happens in every gear.
I read the codes on the car and I consistently get a 10 code (voltage too high or low to MAF sensor). At first I thought I might have a vacuum problem and my dad found a hose that had come lose under the passenger distributor which we reconnected and thought we'd fixed the problem after starting the car up and slowly revving the engine. The next day I tried to drive my car and it worked fine all the way to Walmart, but when I tried to leave it started acting up again. I checked the vacuum connector and it had come loose so I reattached it, but that didn't fix the problem.
Today I got out and cleaned my MAF sensor after trying to research this problem here on the forum, but after reassembling everything the issue still remains although now the car will straighten up and run for a little while before going back to lurching at 1,000 rpms.
Any help would be greatly appreciated, the only thing I know to do at the moment is to replace the MAF sensor.