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Old 05-25-2008, 11:44 AM
gedaggett gedaggett is offline
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Join Date: Feb 2008
Posts: 22
94 e320 inermittent problem

Here are the symptoms

1. Has had rough Idle for a couple of months.

2. Mild Surging for the last couple of months. Mostly at stop lights and really bad in reverse. I replaced the MAS flow sensor and that cleaned it up a bit.

3. Recently at start up the car runs as though it has a dead cylinder or like the timing is way out of whack. If I sit at idle and rev the engine past 4000 rpm a couple of times then it will clear up. If you have ever had a catalytic converter collapse and the engine bogs down it feels just like that. If I floor it while it is screwing up it takes a couple of seconds and then it clears up.

My first thought is the OVP relay from what I have read and considering I replaced the MAS and have confirmed the Wire Harness to be a good replacement. Have any of you come across this and what was the culprit for you? I just don't want to go spend the $90.00 on the OVP if there is something else that is glaring. Let me know what ya know.

Thanks Guys

Gary
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