Interesting ignition problem found
Thread Starter
Melting Slicks
Joined: Jul 2005
Posts: 2,586
Likes: 2
From: Bardstown Kentucky
Interesting ignition problem found
As some of you may know I recently did a 98 Corvette H/C package. Well needless to say I went from perimeter bolt heads to centerbolt Darts. This required me to re-arrange the coils onto new brackets and install centerbolt valvecovers. Since the swap I have always thought the car had a potent exhaust smell and didnt make the power I was expecting. I started leaning towards the ignition when I heard the car from a distance, you could hear almost like a dead cylinder. So I took the coils off my 99 and installed them onto the 98. Problem cured 
I am not sure if its wiring routing that is different or if maybe I just have a bad coil. Either way I am now in search for a set of coils and wiring harness. I just wanted to post this in case someone else ever ran into this issue. Any opinions?
I am not sure if its wiring routing that is different or if maybe I just have a bad coil. Either way I am now in search for a set of coils and wiring harness. I just wanted to post this in case someone else ever ran into this issue. Any opinions?
Former Vendor
Joined: Apr 2007
Posts: 1,331
Likes: 4
From: Jacksonville Florida
As some of you may know I recently did a 98 Corvette H/C package. Well needless to say I went from perimeter bolt heads to centerbolt Darts. This required me to re-arrange the coils onto new brackets and install centerbolt valvecovers. Since the swap I have always thought the car had a potent exhaust smell and didnt make the power I was expecting. I started leaning towards the ignition when I heard the car from a distance, you could hear almost like a dead cylinder. So I took the coils off my 99 and installed them onto the 98. Problem cured I am not sure if its wiring routing that is different or if maybe I just have a bad coil. Either way I am now in search for a set of coils and wiring harness. I just wanted to post this in case someone else ever ran into this issue. Any opinions?
I am not sure if its wiring routing that is different or if maybe I just have a bad coil. Either way I am now in search for a set of coils and wiring harness. I just wanted to post this in case someone else ever ran into this issue. Any opinions?Are you getting any DTC codes? If not id put the old coils back on, get it scanned by a tuner and find out which cylinder is misfiring, and replace that coil, so you dont have to buy all 8.
Instructor
Joined: Aug 2006
Posts: 139
Likes: 0
From: Dublin Ohio
You most likely have 1 bad coil, or a wire rubbing somewhere, i did the exact same swap and my 97 coils work just fine.
Are you getting any DTC codes? If not id put the old coils back on, get it scanned by a tuner and find out which cylinder is misfiring, and replace that coil, so you dont have to buy all 8.
Are you getting any DTC codes? If not id put the old coils back on, get it scanned by a tuner and find out which cylinder is misfiring, and replace that coil, so you dont have to buy all 8.
Former Vendor
Joined: Apr 2007
Posts: 1,331
Likes: 4
From: Jacksonville Florida
