my car show de oil pressure light y shut off and do not start is a saturn
...I'm going to suspect an undervoltage condition at the instrument panel...because the main ground is corroded....the 1/0 black cable that comes from the battery and with a lug connects to the rest of the car providing grounding for the startermotor and the delicate components such as the fuel pressure, ignition and the ECU...so wirebrush this critical connection...get a brand new battery and you will be okay then~
the stuck ignition relay will also be keen to operate of of 12.5 volts rather then "brown" power with varying voltages and available amps~
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