Question about 1998 Chevrolet C1500

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Multiple misfire 1998 vortec 4.3 262 V/6 chevy truck . The computer is reading a multiple misfire and not reading third bank oxygen sensor. I put cap,button,wires,coil and oxygen sensors in. There is power to the oxygen sensor. The truck still wont run right. Then put a fuel spider in still is not right. Any suggestions?

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It could be in the timing...you might have it checked

Posted on Jan 29, 2009

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1 Answer

I've got a 1998 k1500 with a 5.7 vortec motor. It


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I have a 96 chevy 1500 w a vortec 4.3L engine. Starts good and runns good until it warms up! After that there are multi misfires and will almost die! We have change the fuel pump, fuel filter, plugs,...


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1 Answer

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1 Answer

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I would be looking at the front passenger side oxygen sensor for issues. It may be bad, it may not be plugged in, bad wiring at harness.

The random misfire may be symptomatic of the o2 sensor problem.

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