coil pack problem from cleaning the car - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 12-24-2003, 10:06 AM   #1
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Default coil pack problem from cleaning the car

i was cleaning my car the other day, and i guess some simple green got into the bottom coil, well i noticed a problem when i was driving to work. The motor would buck and backfire and i would get no power, and it thought there was a serious problem until i talked to willwren, i explained the symptoms and here is the solution he gave me:

1. Disconnect your battery before you start this.
2. Unplug all your plug wires from the coils. (mark them if you need to)
3. REMOVE all the coils from the ICM (ignition control module).
4. Unplug the ICM harness from the ICM (you'll need a small screwdriver).
5. Get a can of WD-40, and clean all the contacts on the coils (top and bottom), and the ICM plug and jack. Both on the harness and the ICM. Let it drip and wipe it dry. All parts. WD-40 displaces moisture, and won't conduct electricity.
6. Put everything back together, and connect the battery last.

its a really simple solution to a dangerous problem. he also said that if u just ignore the problem u risk blowing the motor. I hope this helps someone out
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Old 12-24-2003, 11:04 AM   #2
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thanks for the info
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Old 12-24-2003, 01:43 PM   #3
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Update. Heard from Jachin, and the problem is back, although this did fix it yesterday. I suspect more moisture perhaps in the firewall bulkhead connector. This may just take time to work itself out. He'* pulling codes right now. Moving this to 92-99. I'll move it to Electrical if the final solution dictates.
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Old 12-24-2003, 02:47 PM   #4
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I do not know if i am way wrong on this or not , but I had pretty much same problem after I had a massive fuel leak and sprayed the engine off I got a "Check wallet light" and the car acted same as Jachin is describing . I had an extra MAF sensor dropped it in and ran perfect every since. I am still not sure what spraying it off had to do with MAF but that was my prob maybe just happened to go bad 1 min after I sprayed engine off?????
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Old 12-24-2003, 03:00 PM   #5
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Interesting point.....Jachin, do you have an exposed cone filter on your DP intake? Did you get any cleaning chemicals on it that may have been sucked down the pipe to the MAF sensor in the TB?
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Old 12-24-2003, 06:58 PM   #6
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every coil has spark and nothing got into my air intake. i checked the filter and the tube it was clean. i used simple green on everything, which is supposed to be automotive safe is this true?
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Old 12-24-2003, 11:05 PM   #7
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Was the coil pack removed & more Dilelectric grease applied? If not, the coils will heat up could prematurely burn out too.
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Old 12-24-2003, 11:13 PM   #8
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no it wasnt would wd40 work for now?
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Old 12-24-2003, 11:14 PM   #9
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Quote:
Originally Posted by jachin
no it wasnt would wd40 work for now?
Not really...WD40 washes away too quickly & has absolutely NO Heat Transfer properties that the Coil Packs need to stay cool.
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Old 12-24-2003, 11:19 PM   #10
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so could this be the sole problem. if not what else could it be, and how much could it cost, what else should i do to check this out
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