Oil gauge on my 1999 XJ is sitting at 80psi when the engine is idling, cruising, or even if the engine is off and the key is just turned one click. Gauge used to work fine with about 30-35 psi at idle and 40psi cruising. Fresh durablend oil as always.
Could it be possible that the oil pressure REALLY IS at 80 psi for some reason? How can I check it? If its just the pressure sensor, how hard is it to replace?
Thanks!!!
It is likely the sensor has gone bad or the wire has just fallen off it and is hitting on something. I 'think' that a short on the wire will pin the gauge at 80 so you might want to follow the wire along for a while. Again I 'think' the wire is purple.
The sensor is easy to change. It just unscrews. If there is oil seeping out the top it is dead for sure, but to test you can pull the wire off and see what the gauge does. Then ground the wire and see what the gauge does.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail >
How can you have 80 PSI with the motor off?
Gauge or sensor malfunction. It could also be a loose wire, connector or ground. Good luck.
footballgod214 did pass the time by typing:
Put the sensors wire back on.
If it's the I6 your sensor is located on the oil filter block.
You have, most likely, a dead short in the wire somewhere if it reads 80 psi at all engine speeds and when the engine is off and the ignition on.
To check your "actual" oil pressure you need to temporarily install a mechanical gauge in the system. Some auto parts stores will rent/lend you a gauge with a small deposit.
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