Original_MudButt
NAXJA Forum User
- Location
- In the eighth dimension
This is my daughter's '02 TJ, but it's the same motor and I don't belong to a TJ forum...
Two days ago, the "check gauges" light would come on at idle because the oil pressure gauge showed zero oil pressure. Once the Jeep started moving, as the RPM went up, so would the pressure. Max was bout 40 psi.
As a first step I had the oil and filter changed because it was time anyway. 20/50 oil and a WIX gold filter.
No change. Zero oil pressure at idle.
So I got a factory MOPAR sending unit and swapped that in.
Now as soon as the Jeep is started the oil pressure gauge goes up to 50 psi. at a normal rate.
BUT... No matter what the engine RPM and no matter what the engine temp (100-210 degrees) the gauge does not move. Not one whit. I can go from idle (about 750 rpm) to 4000 RPM and the gauge does not deviate AT ALL... 50 psi.
I know the obvious is to put a mechanical gauge on it, but we are leaving for Johnson Valley tomorrow. I may leave the Jeep at home until I figure this out.
Any thoughts??? HELP!!!
Two days ago, the "check gauges" light would come on at idle because the oil pressure gauge showed zero oil pressure. Once the Jeep started moving, as the RPM went up, so would the pressure. Max was bout 40 psi.
As a first step I had the oil and filter changed because it was time anyway. 20/50 oil and a WIX gold filter.
No change. Zero oil pressure at idle.
So I got a factory MOPAR sending unit and swapped that in.
Now as soon as the Jeep is started the oil pressure gauge goes up to 50 psi. at a normal rate.
BUT... No matter what the engine RPM and no matter what the engine temp (100-210 degrees) the gauge does not move. Not one whit. I can go from idle (about 750 rpm) to 4000 RPM and the gauge does not deviate AT ALL... 50 psi.
I know the obvious is to put a mechanical gauge on it, but we are leaving for Johnson Valley tomorrow. I may leave the Jeep at home until I figure this out.
Any thoughts??? HELP!!!