Question about 1998 GMC Sonoma

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My oil temp spiked then loss of power any suggestions?

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Yeah man, check your oil pressure sending unit....if its bad, replace it...i think GM ran the ground for the fuel pump through this sensor, allowing it the loss of power that you have described...

Posted on Nov 19, 2009

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BUT if you are experiencing misfire of engine. I would go straight to replacing spark plugs and wires. Distributor cap and rotor.

Also check the charging system. make sure the alternator is charging the battery at above 13Volts. With all components on. ( radio/lights/highbeam/AC). Use a voltmeter and check at the battery positive and negative. if its not charging above 13 V replace the alternator.

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