Engine/Transmission (1998.5 - 2002) Tach and oil press

[wrichards]

Both my tach and oil pressure don't work. Both were working fine. The only things I had done before they stopped working were rear brake calipers and new flatbed tail lighting. I checked all the fuses I could with none blow. What Else??

 

[wrichards]

Forgot to add - this is on my 2002 chassis cab.

 

[wrichards]

had to bump back up.

 

[Batphreak]

I believe the oil pressure is estimated by the engine rpm. Sounds to me like the Crank position sensor is dead.