Just did my Delco ignition swap. - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1987-1991 Parley with regards to your 1987 to 1991 Bonneville, Olds 88 or Buick Le Sabre Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 01-17-2006, 10:22 PM   #1
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Default Just did my Delco ignition swap.

I went to the yard, paid 100$$ for the Delco ICM and coils, plus a bracket, that definitly didn't look like my bracket. I had a hard time getting the silly thing anyways, and the yard guys gave me a bit of a hard time. (which is why I won't be going back.) The other yard, which offers better service, and treat ya like family, didn't have it in stock, so I had no choice.

Anyways, about the bracket. Had a hard time getting maggie off. That stupid METAL bolt (stud) would not come out. Finally gave up, pulled the bracket out, and whacked, and whacked till I got it out. Aluminum and steel don't mix well.

If anyone can tell me how the heck to upload an image to picturetrail, to post here, that'd be GREAT! arrgh! I've already tried, its either the computer, or the fact I don;t know how to.. yikes, i am so annoyed...

Now, about the Junkard bracket. I modified it to bolt in to my exisiting bracket. (had no choice) Do I need a 92+ bracket as well? Becuase, I could have took the icm off, and put it on my exisiting bracket, but that would ruin it rather too soon. (heat issues) so, I just modded it, and it went my way.

Now, turns out the accessory belt was rubbing against some metal wiring. one wire was exposed, and it was, (you guessed it) the crank sensor, and ICM wire. I really wonder what would've happened had it broke on me. Anyways, I could get some extra wire from the main harness, but the crank sensor wires had to be cut, and longer wires put on to get it to fit.

All in all, that hard work, and I was so worried that it would not start. Well, it did.
Yippee!
Did a hack job taping my wires up. Its freezing, and electrical tape, and cold don't mix well. Summertime, I'll fix it. For now, its fine.

I'll povide a picture of what it looks like tommorrow night, its dark, and freezing out now. Anyhoo..
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Old 01-17-2006, 10:44 PM   #2
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okkkkk, got the picture uploaded.
Here it is. the mod i had to do, see the existing bracket, i just drilled a few holes, and bolted the new one it came in.

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Old 01-19-2006, 01:03 AM   #3
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What kind of car did that come from?

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Old 01-19-2006, 09:28 PM   #4
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Default coil

Looks like its from a 96 or newer GM which is why the bracket won't work.
Go back to the yard and ask for an ICM & coils from a 92-95.
The bracket swap is not required. The ICM will have three studs that just drop in your bracket.
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Old 01-19-2006, 10:32 PM   #5
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Oh, sounds like I got one off a 96 3800. Neat!
My mod is fine for now. I didn't try putting it on the old bracket, because its not made to disperse heat well, there would be a gap between the module and bracket, thus overheating. I might fix it later.

I've not noted much difference, except its slightly more responsive with the throttle. The big thing is, it starts up quicker, and with ease, giving my starter a break. Definitly better than the magnavox.
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Old 01-21-2006, 03:53 PM   #6
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Default swap

way to go Tim.
I felt the same improvement when I did mine.
You should also get better mid range throttle response.
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Old 01-21-2006, 04:11 PM   #7
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Default Re: swap

Quote:
Originally Posted by SSEBONNE4EVA
way to go Tim.
I felt the same improvement when I did mine.
You should also get better mid range throttle response.
Exactly... The improvement was enough that I want to make the change to every Magnavox system I come in contact with... even a friend with an L27 has noticed that his Magnavox system is getting weak...


Tim, By chance have you upgraded the plugs yet? Ac Delco Rapidfire 14 or possibly NGK TR55'*?

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Old 01-22-2006, 12:24 AM   #8
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Since this subject came up, I won't waste a separate thread for my question....

I did this swap for my sister'* LeSabre T Type during her Thanksgiving break. I pulled the parts back in summer off a '92 LeSabre, I believe. Cleaned them up, and had her take it in to AutoZone to test them. All was good. Her car was missing pretty badly before this, and the plugs were new Delcos (were done during the summer). So we figured we'd kill 2 birds with one stone: Upgrade to the Delcos, which I had talked her into; and eliminate the possibility of it being the coils/ICM. Unfortunately, things didn't improve with this swap. So we figured maybe it was the wires. It was still plenty drivable as is, so we decided I'd attack those on her next break

Well, when she came up for Christmas break, the car was still missing the same way. She said it was a lot smoother on the highway trip up here, but was still doing it nonetheless. Well, after she left work one day, she was going to visit me at work. Unfortunately, she called to inform me her car died in the left turn lane into the shopping center, and wouldn't restart. Long story short, she got it towed to a mechanic, who changed the plugs and wires again and then finally found that all three replacement coils were bad. My sister still had the original Magnavox sitting in the trunk. She had him test that one too, and he said that was bad, as well? WTF gives? Anyway, they put a new Magnavox one in, and it started right up. She says it'* the best the car has run in a long time. He'* got her all paranoid, having told her that all these cars have different part numbers, and you can't go around switching stuff like that, blah blah blah. So now she'* convinced my swap is what did the car in. :( She doesn't want to put new Delco coils on, regardless of what I say to persuade her (showed her threads like this, the write-up for the procedure to do it, etc).

So I was basically wondering.......is there anything I could have done wrong? I mean, I don't see how EVERY coil involved in this fiasco all went dead at the same time.
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Old 01-22-2006, 01:17 AM   #9
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I just did this swap in my '91 Olds 88 about a week ago. The Delco coils and ICM came from a supercharged '97 Grand Prix with something like 33k miles on it. These coils have approximately half the resistance of the Magnavox coils, so the improvement is definitely there. The car has been running perfectly from the first time that I fired it up with the new coils/ICM. There'* really not much that you can screw up here. It'* 3 bolts and one connector. Did the mechanic reuse the old ICM or did he put in a new one as well with the new Magnavox coil pack?
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Old 01-22-2006, 01:53 AM   #10
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I asked her that, and she wasn't sure. I'll have to see if she can track down the receipt.

*Edit* I was just on the phone with her, and she said the receipt shows both the coils and ICM were replaced with NAPA stock ones.
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