oil light

AVERAGE · Jul 17th, 2003, 12:19 AM

okay guys. now as if enough crap isnt going on witht this car, the oil light now stays on when i cut the car off. WTD!?! why? can someone enlighten me?( i will find a cliff in NC to drive this car off of!) anyone

Myetball · Jul 17th, 2003, 12:53 AM

I'm thinking bad ignition switch. The oil warning light receives power from fuse 11 which is only powered when the ignition is on. If the switch is not cutting off, the oil pressure light will be receiving power and the oil pressure switch will be closed since the engine isn't running.

AVERAGE · Jul 17th, 2003, 09:58 PM

does that mean that my oil sending unit is bad? what if i just take out the bulb. as of tommorrow i want be driving this car anyway. but it will be free to work on

Myetball · Jul 17th, 2003, 10:16 PM

Oil sending unit is working but for some reason the circuit is getting power when the car is off. I assume it goes out once the car is running and the oil pressure switch has pressure applied.

Basically, how it works it you turn on the ignition which applies power to othe ignition relay. The relay sends power to fuse 11 which powers your warning lights. The oil sending unit is basically a switch on the negative side of the circuit between the warning light and the fuse. With the engine running pressure is applied to the switch and it is off. If the oil level drops too low to maintain pressure the switch turns on and the light goes on. Since there is no pressure when the car is off the switch is in the on position. However, the warning light should be out since there is no power supplied to the ignition relay through the ignition switch.

So, for some reason power is getting through the ignition switch with the car off. I'd say pull the bulb or unplug the oil sending unit till you can track it down. Make sure you have oil.