Question about 2002 Chevrolet Silverado

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Truck misses after it is warmed up.

I have 2002 chevy truck 1500 5.3 engine. i run otc on it code came up
po300b random multiple misfire. where do i start 177k

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I2002 chevy Silverado LS 4x4, Went to pass a car eng started missfireing then stoped and will not start <!-- from fixya rte -->

Posted on Aug 16, 2010

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Start with a tune up, spark plugs, spark plug wires, fuel filter, air filter and that might cure the PO300B code, hope this helps, Gary

Posted on Jul 28, 2010

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bad coils will be a constant miss regardless
try putting a can of quality injector cleaner in the tank to see if that fixes the problem
have a fuel pressure tset done to check for pump, filter or pressure regulator problems

May 18, 2017 | 2003 Chevrolet Silverado 1500

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