SOURCE: GAUGES GO CRAZY AND SOMETIMES VEHICLE WON'T START
Poor grounding can cause many of the conditions you have listed. When checking power with a volt meter, this goes unnoticed because the meter does not draw enough amperage to cause the bad connection to break contact. Your battery is grounded to the engine block and also has a small lead to the fender. Many components have individual ground leads as well (including most computers) I would check all ground leads and clean the contact surfaces with sandpaper or a wire brush. Adding an additional ground wire is a good idea as well. Don't forget that the dash board frame must also provide a good ground as well.
Many times this is all you need to do...sometimes though, control modules can be damaged because in having a partial ground, they build up heat, due to additional resistance in the circut.
This may or may not cure your problem, but it's worth checking out. Grounding is often overlooked, especially if it has not completely broken down.
SOURCE: 1999 Jeep Cherokee Sport 4.0L engine. Oil
I'm assuming the engine is still running and no engine noise has occured due to loss of oil pressure, and it is just the gauge that is not reading? If so, the oil pressure switch that is located on the camshaft sensor, could have a bad connection or the oil sensor will need to be replaced. The oil sensor is located on the left side of the engine and is mounting horizontally on the camshaft sensor housing.
SOURCE: 1995 Jeep Grand Cherokee limited will idle real
first will say that you have a good amount of gas in the tank.second o2 sensor does not contol idle or does the map sensor.the tps sensor and if it has a idle air motor.they can control idle other than the computer.
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The car in question is a Toyota Corolla Spacio 2001 not a Jeep Grand Cherokee. Roz Davies
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