Question about 1994 Chevrolet K1500

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I started the truck and it warms up but after it warms up it idles really rough and i put a fuel filter and spark plugs and wires and changed the air filter and it didn't change any thing.

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  • Dennis Mulford
    Dennis Mulford May 11, 2010

    did you change the dis cap and rotor?

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Do you have a check engine light on. Does it run fine if you unplug the oxygen sensor?

Posted on Mar 12, 2009

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  • Master
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Unplug the ECT (engine coolant temp.) sensor and check the condition of the 2 prong plug on the sensor. If it looks corroded, replace it. What's maybe happening is the ECT is telling the computer that engine is still cold and is running like the choke is still on after it's warmed up and at operating temp. The ECT is located near the thermostat housing on the intake.

Posted on Mar 12, 2009

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