Coil Pack & Cylinder Numbering
Thread Starter
Terminal Vette Addict
Joined: Feb 2007
Posts: 1,634
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From: Philly PA
Coil Pack & Cylinder Numbering
Does anyone have a link to where i can find out which coil pack corresponds to which cylinder? A how to, a diagram, something? I've looked and I think I'm a moron becasue I can't find it. I think a pack went bad and I need this to start trouble shooting.
Tech Contributor
Joined: Jan 2007
Posts: 19,338
Likes: 1,119
From: Dyer, IN
edit....Additionally, driver side starting at most forward to rear = 1,3,5,7.......passenger side most forward to rear = 2,4,6,8.
Last edited by lucky131969; Jul 20, 2009 at 02:31 PM.
Thread Starter
Terminal Vette Addict
Joined: Feb 2007
Posts: 1,634
Likes: 46
From: Philly PA
OK this is what I think Front to Rear:
Passenger side: 2,4,6,8
Drivers side: 1,3,5,7
This is correct yes?
I'm also getting (dealer diagnostics) a misfire history code in #8 cylinder. From a cold start it ran rough and went right to dealer to get the #. They test drive and its a H not a C now. No issues at dealer.
No plug issue, no wire issue. Is is a coil pack? I have MSD coils on here, for those with experience on this is a random misfire moment like this the first sign of a coil failing? Im taking an extra coil to the track just in case.
Passenger side: 2,4,6,8
Drivers side: 1,3,5,7
This is correct yes?
I'm also getting (dealer diagnostics) a misfire history code in #8 cylinder. From a cold start it ran rough and went right to dealer to get the #. They test drive and its a H not a C now. No issues at dealer.
No plug issue, no wire issue. Is is a coil pack? I have MSD coils on here, for those with experience on this is a random misfire moment like this the first sign of a coil failing? Im taking an extra coil to the track just in case.
Tech Contributor
Joined: Jan 2007
Posts: 19,338
Likes: 1,119
From: Dyer, IN
OK this is what I think Front to Rear:
Passenger side: 2,4,6,8
Drivers side: 1,3,5,7
This is correct yes?
I'm also getting (dealer diagnostics) a misfire history code in #8 cylinder. From a cold start it ran rough and went right to dealer to get the #. They test drive and its a H not a C now. No issues at dealer.
No plug issue, no wire issue. Is is a coil pack? I have MSD coils on here, for those with experience on this is a random misfire moment like this the first sign of a coil failing? Im taking an extra coil to the track just in case.
Passenger side: 2,4,6,8
Drivers side: 1,3,5,7
This is correct yes?
I'm also getting (dealer diagnostics) a misfire history code in #8 cylinder. From a cold start it ran rough and went right to dealer to get the #. They test drive and its a H not a C now. No issues at dealer.
No plug issue, no wire issue. Is is a coil pack? I have MSD coils on here, for those with experience on this is a random misfire moment like this the first sign of a coil failing? Im taking an extra coil to the track just in case.
Thread Starter
Terminal Vette Addict
Joined: Feb 2007
Posts: 1,634
Likes: 46
From: Philly PA
Sorry, I edited my post to include the firing order....If you did not have MSD coils on there, I would be looking elsewhere..but they do have a history of issues. FWIW, the stock coils are very robust. If you are going to the track, I would just swap out the coil before.
Tech Contributor
Joined: Jan 2007
Posts: 19,338
Likes: 1,119
From: Dyer, IN
Race Director
Joined: Jan 2006
Posts: 10,554
Likes: 33
From: Not on either liberal coast.
Check you plugs and wiring. A spark plug might be damaged during installation and you wouldn't readily realize it. Carbon core plug wires can fail.
It takes two clicks to insure the plug wire is secure...
It takes two clicks to insure the plug wire is secure...
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Team Owner
Joined: May 2001
Posts: 36,836
Likes: 244
From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
OK this is what I think Front to Rear:
Passenger side: 2,4,6,8
Drivers side: 1,3,5,7
This is correct yes?
I'm also getting (dealer diagnostics) a misfire history code in #8 cylinder. From a cold start it ran rough and went right to dealer to get the #. They test drive and its a H not a C now. No issues at dealer.
No plug issue, no wire issue. Is is a coil pack? I have MSD coils on here, for those with experience on this is a random misfire moment like this the first sign of a coil failing? Im taking an extra coil to the track just in case.
Passenger side: 2,4,6,8
Drivers side: 1,3,5,7
This is correct yes?
I'm also getting (dealer diagnostics) a misfire history code in #8 cylinder. From a cold start it ran rough and went right to dealer to get the #. They test drive and its a H not a C now. No issues at dealer.
No plug issue, no wire issue. Is is a coil pack? I have MSD coils on here, for those with experience on this is a random misfire moment like this the first sign of a coil failing? Im taking an extra coil to the track just in case.
About a week later, I get it back with a note: "Tests OK". That's it! No explanation, no KMA, no nothing!........just "Tests OK".
I took all those POS things off and went back to stock coils and have had no problem since.
Ditch those worthless things. Serial.
Drifting
Joined: Apr 2008
Posts: 1,316
Likes: 2
From: St. Louis Mo
I almost bought a set of MSD coilpacks, but im glad i didn t! I ve read numerous threads about problems with them. I admit that they "look" good on the engine, but i wouldn t take a set of them free. I ve never heard of problems with stock coils and like Lucky said above^^ The stock coils are Robust! 
Drifting
Joined: Dec 2000
Posts: 1,833
Likes: 4
From: Calgary, Alberta
I almost bought a set of MSD coilpacks, but im glad i didn t! I ve read numerous threads about problems with them. I admit that they "look" good on the engine, but i wouldn t take a set of them free. I ve never heard of problems with stock coils and like Lucky said above^^ The stock coils are Robust!
Team Owner
Joined: May 2001
Posts: 36,836
Likes: 244
From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
Nice paint job. At least YOU won't have the problem of the POS MSDs failing under load.
Race Director
Joined: Jan 2006
Posts: 10,554
Likes: 33
From: Not on either liberal coast.
While I've never used the MSD coils for LSx/C5, I've used MSD ignitions and coils extensively for several highly modified tri five Chevy cars over the years.
I've never had a failure of any kind. I might be odd, I never had a MALLORY component fail me, either...
I've never had a failure of any kind. I might be odd, I never had a MALLORY component fail me, either...
Safety Car
Joined: Dec 2015
Posts: 3,947
Likes: 1,407
From: Canada
Racer
Joined: May 2021
Posts: 403
Likes: 64
Every place the plugs and wires and I moved all the coil packs around and I'm still getting the same code. I even tried moving the fuel injector. Continuity tests of all four wires took the coil packs. Check out normal. What could it be?
