Question about 2000 Jeep Grand Cherokee
You need an oil pressure tester or just an aftermarket oil pressure guage with the right adapter find the oil pressure switch unscrew the switch and screw in the right adapter.Hook it to the guage with the hose in the kit start it and watch the guage.
Posted on Jul 27, 2014
Remove the oil pressure switch. It is typically located near the oil filter. Install the appropriate fitting from the oil pressure gauge kit. Install the gauge. Start the vehicle.
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Posted on Jul 26, 2014
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Posted on Jan 02, 2017
When the pressure reads low, are you hearing any knocking or tapping noises from the engine? If so, you may have worn engine bearings. I'd check the actual pressure by having a mechanical gauge installed on it in order to determine the actual pressure (your gauge is electro-mechanical and not quite as accurate) If pressure is actually that low the oil pan must be removed and bearings, oil screen etc need to be checked.
The reason pressure is always higher at first is that when cold the oil itself is thicker...as it gets hot and thins out pressure will drop somewhat, but should not go that low. Only other thing that can affect pressure in that way would be either a bad sending unit (you will know that after testing) or gasoline contamination in oil (happens if an injector is not working properly)
Good luck with it!
Posted on Jan 04, 2010
Check wiring to sensor on motor clean or replace.If that is OK.then consider: older high mileage cars will start to ware their bearing and causing more back pressure under load, you may have to live with it. Unless you what to rebuild motor.
Posted on Jan 13, 2010
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