We recently took my wife's 2004 c320 in for a routine maintenance job. Soon afterwards the check engine light came on. We took it back, mechanic said it was a bad MAF sensor and replaced it. Check engine light came back on riding home. Mechanic said it may be a bad sensor and he'd order another one.
The next day her car stalled out in traffic but she managed to get it restarted after about 10 minutes. We let the mechanic know about this and he came out to our house with his diagnostics. Didn't see anything and said he was still waiting on the new MAF sensor.
Replaced the bad sensor, test drove it and gave it back to us. Within an hour check engine light was back on. The next day she was going out and didn't even make it out of the subdivision before it stalled. This time we couldn't get it restarted so had it towed in.
Mechanic said it was the crank position sensor and it actually restarted once it cooled down (I didn't really understand how much it could have heated up in less than .2 mile but whatever). Ordered a new sensor. Test drove it over 70 miles, said he was 201% sure it was fixed and had his driver bring it back to our house.
Within the day the check engine light was back on. Now he is calling on one of the MB high-tech gurus for some advice on how to proceed next, waiting on an answer.
This mechanic is no slouch. He's highly regarded and people from these forums bring their cars in from neighboring states just to have him work on them. Yet this is something even he has never seen before.
So now we're driving around with the check engine light on waiting to see what happens next. Anyone care to venture a guess on what could be causing the problem? Once we finally get it solved I will let you know what it was and we can see whose guess was the closest.
The next day her car stalled out in traffic but she managed to get it restarted after about 10 minutes. We let the mechanic know about this and he came out to our house with his diagnostics. Didn't see anything and said he was still waiting on the new MAF sensor.
Replaced the bad sensor, test drove it and gave it back to us. Within an hour check engine light was back on. The next day she was going out and didn't even make it out of the subdivision before it stalled. This time we couldn't get it restarted so had it towed in.
Mechanic said it was the crank position sensor and it actually restarted once it cooled down (I didn't really understand how much it could have heated up in less than .2 mile but whatever). Ordered a new sensor. Test drove it over 70 miles, said he was 201% sure it was fixed and had his driver bring it back to our house.
Within the day the check engine light was back on. Now he is calling on one of the MB high-tech gurus for some advice on how to proceed next, waiting on an answer.
This mechanic is no slouch. He's highly regarded and people from these forums bring their cars in from neighboring states just to have him work on them. Yet this is something even he has never seen before.
So now we're driving around with the check engine light on waiting to see what happens next. Anyone care to venture a guess on what could be causing the problem? Once we finally get it solved I will let you know what it was and we can see whose guess was the closest.