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Chevy s10 code p0303 - TrailBlazer Chevrolet Cars & Trucks

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Code p0303 on 2000 chevy blaze reading miss fire and running slightly ruff


These are the potential culprits setting off this code:
A code P0303 may mean that one or more of the following has happened: Faulty spark plug or wire Faulty coil (pack) Faulty oxygen sensor(s) Faulty fuel injector Burned exhaust valve Faulty catalytic converter(s) Running out of fuel Poor compression Defective computer

Read more at: https://www.obd-codes.com/p0303
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Feb 07, 2017 | Cars & Trucks

1 Answer

Have a 04 Chevy astro van readin p0303 already had injectors wires plugs cap n rotor changed. Was also told compression was good. What else could it be. Please help running out of $$$$$$


I HAVE A 05 ASTRO AND I HAD THE SAME CODE PROBLEM P0303 IT SAYS CYLINDER MISFIRE BUT MY PROBLEM WAS THE COIL I REPLACED IT AND I WAS GOOD TO GO HOPE THIS HELPS GOD LUCK

Feb 01, 2016 | Cars & Trucks

1 Answer

97 chevy tahoe running rough update....


code P0303 is a misfire code for cylinder # 3, Possible spark plug, wire/coil or injector problem. P0141, bank1 sensor2, is the upstream oxygen sensor, this code may have been set by the misfire of Cyl #3, the lean condition is being cause by the misfire. Fix the misfire and clear the codes and P0141 should not return. If the vehicle is equipped with Coil over plug system try swapping the coil with any one of the others, test drive and if the misfire code changes to another P0300 code ( P0301, P0302, P0304 etc...) the coil has failed and will need to be replaced.

Jan 23, 2014 | 1997 Chevrolet Tahoe

1 Answer

Code p0303 on 2005 chevy impala


generic code for GM, misfire on cylinder 3

Sep 11, 2012 | 2003 Chevrolet Impala

1 Answer

Got a 99 chevy s10 with a po 303 code any help would help


Your P0303 means: "Cylinder #3 Misfire Detected." This could involve a simple matter of a bad spark plug, plug wire or something a bit more serious. If you have separate coils for each cylinder or groups of cylinders, then you need to check the coil pack to the coil over #3 Cylinder. Sometimes it could also mean a vacuum leak ANYWHERE on the Engine and lastly a Valve problem in that the intake or exhaust valve on Cylinder #3 is carboned up. I would recommend getting a Haynes Manual, available at most part stores to go through their diagnostic as to your misfire. Remember, in obtaining a Code, it has a lot more to do with a simple 'misfire detected', it's a starting point to where to look. A vacuum gauge and a compression gauge would help should it not be something so simple as a spark plug, plug wire, coil or a distributor cap & rotor button that has too much corrosion on it.

I hope this helps you a little,

As Always,

"00 Buck"

Jul 08, 2010 | Cars & Trucks

1 Answer

Chevy s10 2002 starting problem doesn't idle very


check the idle sensr, also buy an scan tool, check the code, a sensor or too are bad

Jul 28, 2009 | 2002 Chevrolet S-10

2 Answers

Chevy Blazer P0303 and P0420


Most probably and if a cat is not flowing proper is causes back preasure that can result in sticking or burned vavles,mechanic not nice by saying ignore the cat effiency code p0420.Can ussually have cat replaced at aftermarket muffler shop for approx. $200 cheaper than valve job or excessive fuel that you have used and damage that may occur to your engine.

Jun 16, 2009 | 1999 Chevrolet Blazer

1 Answer

Chevy 1996 s10 pedal position code?


Another name for it is throttle position sensor. It is usually on the side of the throttle body, usually black in color, has a 2 wire connection, attached with 2 screws. Needs replacing.

Mar 16, 2009 | 1996 Chevrolet S-10 Pickup

1 Answer

91 chevy s10 junk


did you try changing the fuel filter or scanning for codes? This would be a great place to start.

Mar 12, 2009 | 1991 Chevrolet S-10 Blazer

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