Question about 2000 Chevrolet Silverado

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2000 silverado 4.8 v8 runs bad when it is cold out side.

2000 silverado runs bad when cold out side untill warm then runs fine
starts fine in warm mornings not in cold mornings. I changed (plugs fuel filter air filter fuel pressure regulator cleaned iac valve & map map sensor egr valve. It also idles up and down untill it gets warm get 17-21 mph on highway. while running it feels like small miss her and there i also checked
compresson 100 or better.

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  • Anonymous Mar 19, 2014

    WHEN IDLEING COLD AND THE RPM DROPS TO 900RPM MOTOR RUNS BAD

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Replace the mass air flow sensor. it has the intake air temp. sensor built in it .i just went thru the same thing with mine.also before you buy that maf sensor, unplug it and then start your truck,,,should run better. if it does not run any better, then you need to try something else.

Posted on Jan 07, 2015

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Try replacing the coolant temperature sensor for the injection system.

Posted on Jan 11, 2009

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