Oil Pressure Guage Problem

[Crossbox]

I thought I would post this to see what people had to say.

It's an 95' Audi 90 Quattro

The oil pressure gauge is always pegged when the key is on. So obviously there is a short somewhere. During the trouble shooting process I found that if the head lights are off, and you turn the key to the off position the gauge drops right away. However if you have the Headlights on and turn the key off, the gauge stays pegged until you turn the headlights off. Where would you start?

Thanks

 

[imported_Marvin42]

I have a 99 2.8 V6 cab with same problem! Have not tried the light thing, but the temp gauge seems to operate in conjunction with the head lights! Did you get to the bottom of the problem, I would be gratefull to know. I cant find any circuit diagrams for the extra clocks,

Cheers

Marvin