When driving my warning light, "check dash gages" came on with a dring. My voltage gauge had dropped to zero. When I turned the Jeep off turned the key to the on position, the power level came up about a quarter of they way. Restarted the Jeep and after a minute or so it immediately dropped to zero accompanied by the warning light and a ding.
Dynamo belt broken?
SOURCE: Oil pressure gauge drops after running and sitting still
The Oil pressure sensor seams to have gone bad and needs to be replaced soon as possible as they tend to leak oil soon after. There common to go bad and start with that since it's easier then replacing the oil pump, but if you don't hear any ticking from the engine and you have good pressure when the engine is cold then it's the sensor.
The 4 cylinder oil pressure switch is located below the A/C compressor. It is a single wire connection with a gray/yellow striped wire.
The 6 cylinder oil pressure switch is located on the passenger side rear of the block. It is a single wire connection with a gray/yellow striped wire.
Good luck and hope this helps.
SOURCE: I'm receiving a check gauges warning light on my 00 Jeep Grn Cher
This might be a result of an oxygen sensor. If you take the vehicle to a store like autozone, they will attach a diagnostic sensor to your vehicle at no charge, and then reset the unit, and be able to tell you what is going on. This is at no charge, so there is nothing to lose. I hope this helps.
SOURCE: oil pressure gauge goes up when car started, but then down to 0
u Have a problem with the oil sending unit. The sensor is located beack right side of the engine block. Take out the switch and make sure u have good oil PSI. Should be 6 psi at idle and around 50 at 4000 RPM. If the presure is ok replace the switch they are very cheap about 20 bucks. Please rate.
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