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Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!

2011 cruze 1.4 misfire p302 code

  • Upperb
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2 years 1 month ago #62918 by Upperb
2011 cruze 1.4 misfire p302 code was created by Upperb
Hi all. My wife’s 2011 cruise has an issue misfire in cylinder 2. I have replaced the spark plugs and installed an MSD coil pack. Number two spark plug is wet with raw fuel. There is less than two ohms of resistance between the ground terminal B in the coil pack harness and the engine block. When I turn on the ignition, my incandescent test light illuminates when connected to terminal A and ground. I would appreciate any advice. Thank you.

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  • Tyler
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2 years 1 month ago #62934 by Tyler
Replied by Tyler on topic 2011 cruze 1.4 misfire p302 code
The first easiest test you can do is to check for spark out of the coil towers. Remove the coil pack from the engine, but leave it connected to the vehicle. Position the coil so the towers point up. Connect your test light to ground.

Have an assistant behind the wheel to crank the engine while you use the test light to create an air gap at each coil tower. Compare the spark you get out of the #2 tower (if any) to the other three cylinders (which should be blue and snappy). If spark out of #2 is equal to the other towers, the coil isn't the problem. If there's no spark or weak spark from #2, you're onto something. Dig further into the coil control circuits.

As always, use your head while doing this test. You'll be working with high voltage spark, so don't do it if there's flammable liquids/fumes around. Spark can also screw with a pacemaker, if you happen to have one.

SD demonstrates the test below. He's testing a waste spark system, which is different from your Cruze, but the basic concept is the same:

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2 years 1 month ago #62960 by Upperb
Replied by Upperb on topic 2011 cruze 1.4 misfire p302 code
Hi Tyler.
Thank you very much for your helpful advice. Will do. Take care!
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