AudiSport4000

Upon driving home today my 86 4kq's oil pressure gauge read zero. The sender and gauges are from a B3 90, so I figured somebody could help. I checked the contacts on the sender and cleaned them, no help. Checked wiring behing gauges and even tried a spare B3 gauge, same thing. With the car running I am getting oil to the top of the engine and NO abnormal sounds around the bay.
Can anybody tell me the proper way to test the oil pressure sender? I have a multimeter, just dont have a 80/90 Bentley.
Thanks guys.

Mike

Brdman*

No signal from the sender, the gauge will max out

AudiSport4000

Max out = read maximum (5 bar)?

|skolnick

yes sir... disconnect the sender and see what reading you get

AudiSport4000

Set up my spare B3 pressure gauge. Connected it to ground, the gauge, and finally the battery, when I connected it to the battery, it read past 5 bar. This means what? When car turned on, reading was the same, didnt move, but I didnt let the car run for that long.

Mike

Luxus Panzer

Make shure the connections at back of guages are not switched (oil press and oil temp)