P0300

Asked by Rich3210 Aug 21, 2016 at 03:18 AM about the 2001 Chevrolet Silverado 1500 LS Extended Cab LB RWD

Question type: Maintenance & Repair

P0300 came out change fuel filter fuel
pressure regulator plugs map senor runs
good for 20 miles then miss fire smell like
gas what cam I do

5 Answers
221,085

Rowefast answered 7 years ago

P0300 CHEVROLET - Cylinder Misfire Detected Random Cylinders - Possible causes - Faulty spark plug (s) - Faulty ignition coil (s) - Clogged or faulty fuel injector (s) - Intake air leak - Fuel injectors harness is open or shorted - Fuel Injectors circuit poor electrical connection - Ignition coils harness is open or shorted - Ignition coils circuit poor electrical connection - Insufficient cylinders compression - Incorrect fuel pressure... There is a service bulletin on clogged fuel injectors on this you should look up...

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GuruSZXTF answered 4 years ago

Probly the ignition switch wiring harness or the switch best to replace harness switch lock and timbler

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140

GuruSL8YM answered 4 years ago

i have a 2003 chevy silerado and it will start but it dies and it showing p0300 what could it be

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80

GuruP5FXY answered 4 years ago

I was haveing the p0300 code and it was driveing me crazy,i changed everything i can think of from the plugs,wires,fuel filter etc...i would get the code to disappear....then bam back again after all my couple weeks of stress i figured it out,DISTRIBUTOR CAP.that was my issue and i didnt even buy another i just cleaned the one i had,put it back on and in wallah FIXED

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JayBenz answered 4 years ago

What did you use to clean the distributor cap???

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