Missfire when A/C is running
09-02-2008, 01:05 PM
#1
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Missfire when A/C is running My 02' LS1 missfires when I put the AC on. I can hear some weird noise by the drivers side of the motor. Plugs and wires were replaced months ago, as well as O2 sensors. Not throwing any codes. Any ideas?
09-02-2008, 05:26 PM
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I will take a look at that. Now that you mention the belt, I do hear it 'chirp' when letting up after hard acceleration. Hopefully that is it. Would it be possible to change the clutch only? Thanks!
Last edited by TedsB4Csled; 09-02-2008 at 05:57 PM.
09-05-2008, 10:49 PM
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Check for a cracked plug. I had the same issue, it would miss slightly at idle and couldn't really tell until the AC was on then I could feel it missing even more. I hooked up HP Tuners and scan for misfires, which pointed to the #2 cylinder. I pulled the plug and sure enough the ceramic area was cracked. Replaced it and problem solved.
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09-06-2008, 09:55 AM
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Check for a cracked plug. I had the same issue, it would miss slightly at idle and couldn't really tell until the AC was on then I could feel it missing even more. I hooked up HP Tuners and scan for misfires, which pointed to the #2 cylinder. I pulled the plug and sure enough the ceramic area was cracked. Replaced it and problem solved.
09-06-2008, 10:32 AM
#9
Unplug the coil pack and remove from valve cover. it will help you get to some of the back plugs.
http://www.ls1howto.com/howto/fbody/...ecoilpacks.jpg
Dont unbolt each coil from bracket just the 5 bolts in this pick and all 4 coils will come out together.
http://www.ls1howto.com/howto/fbody/...ecoilpacks.jpg
Dont unbolt each coil from bracket just the 5 bolts in this pick and all 4 coils will come out together.
09-07-2008, 11:58 AM
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Unplug the coil pack and remove from valve cover. it will help you get to some of the back plugs.
http://www.ls1howto.com/howto/fbody/...ecoilpacks.jpg
Dont unbolt each coil from bracket just the 5 bolts in this pick and all 4 coils will come out together.
http://www.ls1howto.com/howto/fbody/...ecoilpacks.jpg
Dont unbolt each coil from bracket just the 5 bolts in this pick and all 4 coils will come out together.
I will try again when it gets cooler. Thanks again I appreciate the help.
