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Cadillac Repair/Oil Light stays on with car turned off

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Question
I have a 1992 Cadillac DeVille.  The oil light is off while I am driving the car but once I turn the car off the oil light comes on and remains on.  Because of this it is draining my battery.

Answer
Disconnect the oil pressure switch wire at the oil pressure switch and see if the light goes OUT. If it DOES, Replace the oil pressure switch.

You need to send an E-mail to:

onlineautohelp@msn.com

in order to get pictures of the oil pressure switch location.

QUESTION: What size engine do you have ?. 4.6L or 4.9L  ?

Cadillac Repair

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Expertise

On hands professional expertise in all aspects of Cadillac diagnostics and repair mid 1970`s thru 2000 year vehicles. GM certified in electronic fuel injection, Automatic transmission, Heating and A/C, and onboard vehicle computer diagnostics.

Experience

Held over 15 GM certifications prior to retirement in 1989.

Organizations
Prior to retirement held several ASE certifications, numerous Factory certifications.

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