Gentleman Jack

Hi guys!

I got a question/problem with the 944 turbo -89; the the oil pressure indication has gone bad after engine wash. When i put ingition on the oil pressure gauge indicates max./above 5 bar. When engine i started, it stays there at max. and never drops. I have driven the car a few times up to 30 min. and still max./over 5 bar-indication.

Where should i begin? Does this mean a faulty oil pressure gauge or faulty electrical/wiring?

Any help is very much appreciated!!

mahoney944

Replace the oil pressure sender or inspect the wires going to it. Passenger side of the motor, its round

Gentleman Jack

When replacing the oil pressure sender, do i need to remove the Power steering unit close by? Or is it possible to remove the oil pressure sender alone?

URG8RB8

Like many things on this car, replacing the sender is a PITA!!! Make sure you don't buy a URO, buy the real VDO from Sunset Porsche in Oregon. The best price on a real gauge. 50% of the aftermarket ones don't work and you Don't want to do this again. Get ready for the oil to pour out too when you remove it. It takes a 15/16 or 24 mm wrench. You will need a stubby version if you don't pull the PS lines. I would recommend removing the PS lines. It makes this job much easier. Good luck.

PS: pay close attention to where the wires go, take a picture. They are polarity sensitive, only work one way!

Gentleman Jack

When working underneath with the car on a lift, with a stubby 24mm it should be possible to replace the sender without messing around with anything else, Power steering pump, lines etc.?