Question about 2007 Chevrolet Cobalt Coupe

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I have a 2007 chevy cobalt and it keeps showing a code for a misfire on the number 1 cylinder i can unplug the harness from the coil pack on cylender 1 and it doesnt effect the motor. I have changed the coil pack and the spark plug with no effect. What else can i do?

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  • 689 Answers

Change the spark plug wires,

Posted on Nov 08, 2012

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Posted on Jan 02, 2017

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SOURCE: 1998 Cavalier No Spark in cylinders 1 & 4

ignition mod. grounds,pcm or timing belt could all be it but, I would have to look at timing first.

Posted on Jan 17, 2009

tragedy lok
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SOURCE: misfire of the #3 cylinder, 4.3 6 cyl

R THEY WIRED CORRECTLY,WITH THE SAME GAP??

Posted on Aug 18, 2009

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SOURCE: Code P0300 misfired detected. I have cylinder 1

sound like bad ignition module.make sure where coil pack set in module contacts is clean and making good contact.also make sure plugs and wires is good.

Posted on Jan 09, 2010

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SOURCE: 2.2 ecotec engine. Code says random misfire. What

did you fix it? if you did what did you do? i have the same prblm thanks!

Posted on Jan 17, 2010

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SOURCE: I have a 2002 TrailBlazer with the straight

did you replace only one spark plug? that can cause issues because of differences in resistances between cylinders. also, did the map code stay off after replacing
?

Posted on Feb 28, 2010

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repairpal.com > Problems > Chevrolet > Cobalt
Check Engine Light Due to Engine Misfire on Chevrolet Cobalt .... 2007 Chevrolet CobaltVisitor ... The coil pack was bad and was making the cylinders misfire.

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Try swapping the coil packs around - like swap #1 with #2, and swap #6 with #5, see if the misfires MOVE with the coil packs swapped to the new cylinders or if they stay with the cylinders. If they move with the coil packs, the new coil packs are bad. If they stay with the cylinders, there's a problem with those cylinders. You DID replace that camshaft sensor, right?

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