PeachParts Mercedes-Benz Forum - View Single Post - How can you tell if your oil pump is going bad?

Tomguy · #4 07-03-2006, 10:33 PM

I edited his post to show his signature, which tells which type.

An M117 should PEG the oil pressure gauge at almost any RPM above idle. If you aren't pegged at, say, 1500RPMs, something is wrong with either the sender or the oil pump.

There are TIMES when my m117 will NOT have pegged oil pressure at high RPMs. If I am going around a VERY sharp corner and go into another at VERY high speed, it will fluctuate for an instant. That's the only time mine EVER drops below pegged at speed.

If your gauge isn't pegged at speed at all times, then it's time to worry. Otherwise, it is probably a faulty level gauge.