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Tech Area => General Buick Tech => Topic started by: TSM Girl on January 28 2011, 05:24:53 PM

Title: Not quite sure...
Post by: TSM Girl on January 28 2011, 05:24:53 PM
Wrecked em is having "issues" with my GN. We are trying to figure out why it is not running right. When driving it sounds like the car wants to "Backfire" but does not backfire it stumbles and misses when under a load. Any info would be great! Thanks guys.  :rolleyes:
Title: Re: Not quite sure...
Post by: TSM Girl on January 28 2011, 05:46:03 PM
Is this bad?
Title: Re: Not quite sure...
Post by: $1987 GN$ on January 28 2011, 06:57:36 PM
Quote from: "TSM Girl @ Fri Jan 28, 2011 5:46 pm"
Is this bad?

Nah it looks perfectly fine. :)

AJ___
Title: Re: Not quite sure...
Post by: TSM Girl on January 28 2011, 07:29:09 PM
Quote from: "$1987 GN$ @ January 28th 2011"
Quote from: "TSM Girl @ Fri Jan 28, 2011 5:46 pm"
Is this bad?

Nah it looks perfectly fine. :)

AJ___




I do not think so, It is melted.
Title: Re: Not quite sure...
Post by: SuperSix on January 28 2011, 08:01:42 PM
Quote from: "TSM Girl @ Fri Jan 28, 2011 7:29 pm"
Quote from: "$1987 GN$ @ January 28th 2011"
Quote from: "TSM Girl @ Fri Jan 28, 2011 5:46 pm"
Is this bad?

Nah it looks perfectly fine. :)

AJ___

I do not think so, It is melted.


I am pretty sure that' normal. that's a mastic Motorola put in there to keep the wires from vibrating loose, moving etc.
Title: Re: Not quite sure...
Post by: Wrecked Em on January 28 2011, 08:09:34 PM
Quote from: "SuperSix @ Fri Jan 28, 2011 7:01 pm"
Quote from: "TSM Girl @ Fri Jan 28, 2011 7:29 pm"
Quote from: "$1987 GN$ @ January 28th 2011"
Quote from: "TSM Girl @ Fri Jan 28, 2011 5:46 pm"
Is this bad?

Nah it looks perfectly fine. :)

AJ___

I do not think so, It is melted.


I am pretty sure that' normal. that's a mastic Motorola put in there to keep the wires from vibrating loose, moving etc.


Actually it WAS ok until I opened it up and one of the tabs on the coil broke off from the wire connected to it being stuck in the goo.

As a point of reference, the other unit I have is not melted. Maybe different materials since they are different colors.
Title: Re: Not quite sure...
Post by: SuperSix on January 28 2011, 08:10:55 PM
Quote from: "Wrecked Em @ Fri Jan 28, 2011 8:09 pm"
Quote from: "SuperSix @ Fri Jan 28, 2011 7:01 pm"
Quote from: "TSM Girl @ Fri Jan 28, 2011 7:29 pm"
Quote from: "$1987 GN$ @ January 28th 2011"
Quote from: "TSM Girl @ Fri Jan 28, 2011 5:46 pm"
Is this bad?

Nah it looks perfectly fine. :)

AJ___

I do not think so, It is melted.


I am pretty sure that' normal. that's a mastic Motorola put in there to keep the wires from vibrating loose, moving etc.


Actually it WAS ok until I opened it up and one of the tabs on the coil broke off from the wire connected to it being stuck in the goo.

As a point of reference, the other unit I have is not melted. Maybe different materials since they are different colors.


I've cracked open a few and some had it, some didn't. As suggested in another thread - check all of your grounds too
Title: Re: Not quite sure...
Post by: DCEPTCN on January 28 2011, 08:12:07 PM
Had the same problem with the GN years ago...scratchi ng my head for weeks until a friend recommended that I try the ignition module. I now keep two ign. mods and two coilpacks on hand at all times. I believe a new ign mod is about $89 at Autozone...? No wait, more like $129 I think...
Title: Not quite sure...
Post by: Wrecked Em on January 28 2011, 08:18:17 PM
I have a module but I will need a coil pack to go back on the 85. I borrowed the coil and module from it for now.
Title: Not quite sure...
Post by: DCEPTCN on January 28 2011, 08:21:01 PM
Quote from: "Wrecked Em @ Fri Jan 28, 2011 6:18 pm"
I have a module but I will need a coil pack to go back on the 85. I borrowed the coil and module from it for now.
The $89 I think is for the coil pack...that was a few years ago, though.
Title: Not quite sure...
Post by: SuperSix on January 28 2011, 09:04:14 PM
Coil packs are 49 at autozone
Title: Not quite sure...
Post by: DCEPTCN on January 28 2011, 09:40:42 PM
Quote from: "SuperSix @ Fri Jan 28, 2011 7:04 pm"
Coil packs are 49 at autozone
Is that for a re-man? I swear I paid more than that.
Title: Not quite sure...
Post by: SuperSix on January 28 2011, 10:56:25 PM
Quote from: "DCEPTCN @ Fri Jan 28, 2011 9:40 pm"
Quote from: "SuperSix @ Fri Jan 28, 2011 7:04 pm"
Coil packs are 49 at autozone
Is that for a re-man? I swear I paid more than that.


Not sure how one would reman a coil pack.

http://www.autozone.com/autozone/parts/Ignition-Coil/_/N-9n80r?filterByKeyWor d=C860&fromString=search&isSearchByPart Number=true
Title: Not quite sure...
Post by: Turbogn86 on January 28 2011, 11:03:26 PM
i would not trust an autoparts store ignition module. i went through 5 or 6 of them and finaly ordered on strait from GM and finaly got my car running right. it had a similar problem cept when car was hot it would cut off and not start for 20 to 30 mins and repeat process every 3 or 4 miles.
Title: Re: Not quite sure...
Post by: DCEPTCN on January 28 2011, 11:11:22 PM
Looks like they're carrying power bastards again...

http://www.autozone.com/autozone/parts/Cardone-Reman-Brake-Power-Booster/1987-Buick-Regal/_/N-iidqmZ8kn7z?counter=0&itemIdentifier=38996_0_4837_88626
Title: Re: Not quite sure...
Post by: gordyzx9r on January 29 2011, 11:31:10 PM
I would stick with the AC Delco brand for ignition modules and coil packs.  Those aftermarket ones do weird shit to a car. Somehow an off brand ignition module found it's way onto my car when it was in someone's "shop" and it caused havoc with my tachometer zeroing out at about 2K RPM.
Title: Re: Not quite sure...
Post by: ULYCYC on January 30 2011, 08:19:08 AM
You can always swap over to a type 2 coil/module setup from fwd 3800 vehicle.
Title: Not quite sure...
Post by: Steve Wood on January 30 2011, 10:13:36 AM
given the high rate of bad perfroming type II's I would stay away from them.  They only have one power feed rather than two which sometimes causes them to break up.

I would use a GM module, but, coils don't seem to be as particular.

If you ohm the old coil, it may be bad, but that module did not look too good to me....may have been the picture
Title: Not quite sure...
Post by: ULYCYC on January 30 2011, 10:35:29 AM
The early ones 87-93 work great. Later units had troubles. I'm talking about the module not coils.
If one is installed with the proper plate and grounded, failures seem to vanish.
Title: Not quite sure...
Post by: Steve Wood on January 30 2011, 11:47:11 AM
I think I will stick to the sure thing
Title: Not quite sure...
Post by: daveismissing on January 30 2011, 05:21:18 PM
Quote from: "ULYCYC @ Sun Jan 30, 2011 10:35 am"
The early ones 87-93 work great. Later units had troubles. I'm talking about the module not coils.
If one is installed with the proper plate and grounded, failures seem to vanish.


How does one identify the vintage?
Title: Not quite sure...
Post by: Wrecked Em on January 30 2011, 05:48:42 PM
I think if it becomes an issue, i will just convert to a coil on plug system.
Title: Not quite sure...
Post by: Wrecked Em on January 30 2011, 05:49:15 PM
Put 25 miles on the car today. It has been way too long.
Title: Not quite sure...
Post by: ULYCYC on January 30 2011, 06:02:12 PM
Quote from: "daveismissing @ Sun Jan 30, 2011 5:21 pm"
Quote from: "ULYCYC @ Sun Jan 30, 2011 10:35 am"
The early ones 87-93 work great. Later units had troubles. I'm talking about the module not coils.
If one is installed with the proper plate and grounded, failures seem to vanish.


How does one identify the vintage?


Order module delco 1946A or gm pn# 10456478
plate gm pn#10456478
coils are the same up to 2005 (I think) gm pn#10472401
Title: Not quite sure...
Post by: bishir on January 30 2011, 06:26:44 PM
Steve's site will tell you how to ohm them out.  I have a coil pack/module tester and it's a handy dandy tool.  It even helped diagnose and get a turbo-t back on the road on powertour this year. It was a good thing I had brought a spate ignition module with me because even the NAPA crew that follows the tour couldn't locate any nearby for the guy.
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