I have a 2001 grand am with the 2.4L twin cam motor. It is misfiring. Live data on the scanner is showing majority on cylinder 1 but #2 is also misfiring. Plugs look fine. Since this motor has 2 coil packs, 1 pack fires cylinder1 and 4, the other pack fires cylinder 2 and 3. I'm thinking it might be a shorted ignition housing since there is carbon markings on the tips and a crack. anyone have this motor and dealt with this?
01 Grand am 2.4L misfire
- Thread starter Rubberman
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I would replace it and see if you can get the ICM tested at a parts store.
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Cylinder 2 plug was broken. Replaced plugs in cylinder 1 and 2. Also replaced the housing pictured above. It’s running but there is still a slight misfire on cylinder 1. Very small misfire. Seems to disappear at high rpm’s. Gapped plugs at .050. I would think if it’s a be coil pack it would also misfire on cylinder 4. So im
Not sure where to go from
Now
Not sure where to go from
Now
- Joined
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- Reaction score
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Why didnt you replace all plugs?
How are you determining there is a misfire, a code?
You didnt have the ICM tested?
How are you determining there is a misfire, a code?
You didnt have the ICM tested?
My scanner. Using the misfire function. I didn’t replace all plugs cause cylinders 3 and 4 weren’t misfiring. I just swapped the coil packs around and the misfire went from cylinder 1 to cylinder 3 so that’s a faulty coil packWhy didnt you replace all plugs?
How are you determining there is a misfire, a code?
You didnt have the ICM tested?