Recurring Bad Coil Pack / IGN Module Issue

Orlando_87GN · 12-06-2007, 11:31 AM

Hello all. I seem to be plagued with a bad coil pack and or ignition module on my GN motor in my RX-7. The spark plug wires on the back of the coil pack are very close to the firewall since the engine bay is pretty tight. The plug wires were touching up until a few weeks ago when I moved the coil pack and module as far forward as possible which is basically up against the back of the dog house. Now there is about 1/4" clearance between the boots of the wires but the wires are still touching. My question is, with clearance so tight in this situation can the coilpack/ignition module keep going bad because it's too close to the firewall? Maybe the spark is jumping to the firewall, although I've never seen anything like that. Is there any sort of matting or tape that I could use on the firewall that would ensure a spark couldn't penetrate through? I am at a loss as to why I keep replacing the coil packs and modules on this car, seems like it's been forever since the car had a solid ignition system.

chrisgarrett46 · 12-06-2007, 11:41 AM

How about something like this?
http://solutions.3m.com/wps/portal/3...be70Q1MK7N3Ngl

beachbum · 12-06-2007, 11:52 AM

Grumpy where are you?

chrisgarrett46 · 12-06-2007, 12:56 PM

Quote:

Originally Posted by beachbum

Grumpy where are you?

Beachboy, where are YOU? Are you crumping at the club?

gbsean · 12-06-2007, 01:02 PM

you can also try using sound deadening pads....also are you sure the coilpack/ignition bracket is fully grounded.....

beachbum · 12-06-2007, 02:54 PM

Quote:

Originally Posted by chrisgarrett46

Beachboy, where are YOU? Are you crumping at the club?

Panhandling...I'm laid off again.

NOCOOLER · 12-06-2007, 04:34 PM

Mike how is the clearance between the coil pack and the hood?

Maybe you need a rubber mat between them.

Doesn't look like there is much room to relocate the module/pack at all.

Orlando_87GN · 12-06-2007, 04:37 PM

The clearance between the top of the coilpack and hood is close. I don't think it's touching but darn close.

IfYaGot3Yards · 12-06-2007, 04:40 PM

Quote:

Originally Posted by Orlando_87GN

The clearance between the top of the coilpack and hood is close.

I don't think it's touching but darn close.

Done the "putty" test?---------------

william brophy · 12-06-2007, 05:36 PM

At night when it's real dark open the hood and check for arcing and move the wires around that are touching metal to see if they arc.

PS: alter the coil/mod. bracket some to lower some if you think it's necessary for more room between coil/mod. and the hood, also for more room between the top of the firewall and plug wire terminals.

Grumpy · 12-07-2007, 09:02 AM

here I am

... the coilpack and module are close on mine to... I am goin to take a little more metal out for some more clearence ... are these GM pieces ????

Orlando_87GN · 12-07-2007, 11:32 AM

They are GP Sorensen from the parts store.

Grumpy · 12-07-2007, 11:59 AM

Quote:

Originally Posted by Orlando_87GN

They are GP Sorensen from the parts store.

for shits and grins take the one off your Buick (GM parts) and try it

or have you already tried ones that worked on other cars ??

12-06-2007, 11:31 AM	#1 (permalink)
Orlando_87GN Resident Idiot Join Date: Sep 2000 Location: Orlando, FL USA Posts: 10,458	Recurring Bad Coil Pack / IGN Module Issue Hello all. I seem to be plagued with a bad coil pack and or ignition module on my GN motor in my RX-7. The spark plug wires on the back of the coil pack are very close to the firewall since the engine bay is pretty tight. The plug wires were touching up until a few weeks ago when I moved the coil pack and module as far forward as possible which is basically up against the back of the dog house. Now there is about 1/4" clearance between the boots of the wires but the wires are still touching. My question is, with clearance so tight in this situation can the coilpack/ignition module keep going bad because it's too close to the firewall? Maybe the spark is jumping to the firewall, although I've never seen anything like that. Is there any sort of matting or tape that I could use on the firewall that would ensure a spark couldn't penetrate through? I am at a loss as to why I keep replacing the coil packs and modules on this car, seems like it's been forever since the car had a solid ignition system. Attached Thumbnails __________________ Check Out MikesStuff4Sale.com to view my used parts! ------------------------------------------------ 1987 Buick Grand National Budget 4.1, 204/214 cam, TA-49 Turbo, Stockish Heads, V4, MSD50's, TH DP, JayJackson 62mm TB, Translator plus Extender powered. 3680# with pilot ------------------------------------------------ 1993 Mazda RX-7 4.1 Buick Powered 11.20 @ 128mph (2.4 60')!

12-06-2007, 11:41 AM	#2 (permalink)
chrisgarrett46 Out, damned knock Join Date: May 2004 Location: Highland Park, ILLinois Posts: 5,603	How about something like this? http://solutions.3m.com/wps/portal/3...be70Q1MK7N3Ngl __________________ Experience is what you get when you don't get what you want. 2008 rebuild, Comp roller cam, Cat stroker, RJC gridle, CPT66BB, PTE Stock Location IC, Champion iron, T&D roller rockers, 60# Mototron injectors w/Turbotweak chip, Monroe-ported throttlebody, RJC Power Plate, Jimmy-built trans w/Precision Vigilante converter, ATR SS dual exhaust, ATR rear sway, BMR upper and lower control arms, Edelbrock Performance shocks, Razor alky, Tinman cold air intake, MT street radials. Oh, and Russ Merritt spark plug wires.

12-06-2007, 11:52 AM	#3 (permalink)
beachbum THE MILF MAGNET Join Date: May 2005 Location: Bopping Your Mom Posts: 6,590	Grumpy where are you? __________________ THEY CALL ME DOCTOR LOVE...I'VE GOT THE CURE THE MILFS ARE THINKING OF.

12-06-2007, 01:02 PM	#5 (permalink)
gbsean 1 of 64,000,000 Join Date: Jul 2005 Location: Flanders, N.J. Posts: 10,656	you can also try using sound deadening pads....also are you sure the coilpack/ignition bracket is fully grounded..... __________________ 11.599 @ 119.91 eat that Ferret Joe and JoeNational Tuning in Progress Sean Ryder Buick Performance Group Vice-Chairman www.buickperformancegroup.com see thread for Engine Specs http://www.turbobuicks.com/forums/wa...tml#post680751 happy now Rich

12-06-2007, 04:34 PM	#7 (permalink)
NOCOOLER Growing my Mullet! Join Date: Sep 2000 Location: St. Louis MI Posts: 2,525	Mike how is the clearance between the coil pack and the hood? Maybe you need a rubber mat between them. Doesn't look like there is much room to relocate the module/pack at all. __________________ - Jeremy 86 T-type - sold......probably was the quickest/fastest peg-leg car. Y2K Pontiac Firebird Formula M6 - Headers/ORY/Flowmaster Cat Back - FAST 78/78 K/N filter 13.0@109.25 w/2.0 60' on street tires 03 GMC Sierra RCSB 4x4 5.3 CAI - Spal Controlled LS1 EFANS - GMPP Exhaust. Exhaust Clip

12-06-2007, 04:37 PM	#8 (permalink)
Orlando_87GN Resident Idiot Join Date: Sep 2000 Location: Orlando, FL USA Posts: 10,458	The clearance between the top of the coilpack and hood is close. I don't think it's touching but darn close. __________________ Check Out MikesStuff4Sale.com to view my used parts! ------------------------------------------------ 1987 Buick Grand National Budget 4.1, 204/214 cam, TA-49 Turbo, Stockish Heads, V4, MSD50's, TH DP, JayJackson 62mm TB, Translator plus Extender powered. 3680# with pilot ------------------------------------------------ 1993 Mazda RX-7 4.1 Buick Powered 11.20 @ 128mph (2.4 60')!

12-06-2007, 05:36 PM	#10 (permalink)
william brophy Registered User Join Date: Jan 2004 Posts: 1,023	At night when it's real dark open the hood and check for arcing and move the wires around that are touching metal to see if they arc. PS: alter the coil/mod. bracket some to lower some if you think it's necessary for more room between coil/mod. and the hood, also for more room between the top of the firewall and plug wire terminals. __________________ WE4 HARDTOP @3700 lbs., 2004R, OEM BLOCK, OEM COMPUTER, AIR CONDITIONED, ETC. GOD BLESS AMERICA Last edited by william brophy : 12-06-2007 at 05:51 PM.

12-07-2007, 09:02 AM	#11 (permalink)
Grumpy Registered User Join Date: Sep 2000 Location: Andover, Ma Posts: 11,193	here I am ... the coilpack and module are close on mine to... I am goin to take a little more metal out for some more clearence ... are these GM pieces ???? __________________ Dan dont run your mouth if you cant run your car 86/87 GN and 89 TTA .. tons of parts !! Time to get out! Stuff has to go !!! Otherwise I am cutting it up and throwing it away email ttastage2@yahoo.com

12-07-2007, 11:32 AM	#12 (permalink)
Orlando_87GN Resident Idiot Join Date: Sep 2000 Location: Orlando, FL USA Posts: 10,458	They are GP Sorensen from the parts store. __________________ Check Out MikesStuff4Sale.com to view my used parts! ------------------------------------------------ 1987 Buick Grand National Budget 4.1, 204/214 cam, TA-49 Turbo, Stockish Heads, V4, MSD50's, TH DP, JayJackson 62mm TB, Translator plus Extender powered. 3680# with pilot ------------------------------------------------ 1993 Mazda RX-7 4.1 Buick Powered 11.20 @ 128mph (2.4 60')!

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