Oil Pressure

[gruff500]

I know we have covered oil pressure ad nauseum before but I have encountered a somwhat different problem. Oil pressure on my 98' 500 starts at 45 p.s.i when cold then reverts to 15 - 22 p.s.i when hot. Allegedly this is well within normal parameters. Problem I have is that after my recent clutch change I find that the oil pressure dial will sometimes flutter and then drop off to nothing before then picking up a moment later. Slightly concerned t say the least but I have checked the oil level and it remains at maximum. Assume electrical problem with the pressure switch? but can anyone offer more help?

Many Thanks

[Paul.B]

I would think electrical rather than actual. Does the oil light come on when it drops off to zero? When does it do this, at idle or when driving along?

I wouldn't worry too much. Just get it checked out for peace of mind.

Paul.

[GreenV8S]

The symptoms, and the fact it started immediately after major work in the engine bay, both suggest it is an electrical problem. I would check for wiring damage out by the sensor and make sure the connector is secure.

[siwes]

Mine to0 starts at around the 45 psi and used to drop to 25-30 when hot at 30mph in 3rd gear. I noticed one day that at that speed it was still around the 40 psi when hot then dropped back to 30 I changed the sender and all is right with the world 40-45 when cold and 30-38 psi when hot.
It was bloody difficult to lay my hands on a sender unit , eventually managed it from those very nice people in Wigan "Gormers" got some torsion drop down links as well just as difficult to find
simon

[GRUFF500]

Gleaming - thanks everyone, I think I can rest a little easier! It happens both at idle and at speed so looks like I need to replace the sender unit just in case. Anyone know where I can easily get one or have a website link?

Many Thanks!