BenzWorld Junior Member
Date registered: Apr 2010
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No oil pressure at idle! (1995 E320)
I've got a couple issues with my 1995 E320 wagon which I can't figure out. I'm not sure if they're related, either.
First, and most disconcertingly, when the car is stopped and at idle or drive, the oil pressure indicator shows 0 oil pressure. When I put it in park it goes to "1", which I believe is a normal pressure indication. When I hit the gas in idle or drive the pressure rises to the top of the scale. When I am going fast and then put the car into idle the pressure slowly drops down.
Second, there is weird behavior when the car is at idle. Specifically, a lot of surging from the engine.
There are two error codes: Mass air flow sensor and air injection system.
I've been doing a bunch of work on the car recently. Just replaced the wiring harness. Have a MAF on order. Also, I need to get a neutral safety switch because it often doesn't start when in park.
That said, I am really mostly concerned about the lack of oil pressure. I don't know what's going on. Nor with the surging at idle. Any advice is appreciated!