94 Bonneville intermittent start - Page 2 - 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 06-09-2012, 11:18 PM   #11
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Sounds like a ground buss issue...have a read here...

https://www.gmforum.com/showthread.php?t=278980
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Old 06-10-2012, 02:01 AM   #12
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I might have solved this problem. I did a search on fuel pumps and power windows and discovered that they're tied in together. There is a ground buss under the floor trim near the front of the driver door that gets corroded if wet or damp. Sure enough, mine was corroded. A few tugs on the wires brought everything back online, and I can no reproduce the start-no-start condition. I just have to figure out how to get the wires out off of the panel so I can clean them.
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Old 06-10-2012, 02:05 AM   #13
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@Mike1995...I posted before I read yours, thanks...Thats EXACTLY the buss that is causing the issues. Thanks for that write -up. Now I know how to remove the metal buss and not the wires...This is huge for me...
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Old 06-10-2012, 09:52 AM   #14
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Your very welcome!!
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Old 01-26-2013, 03:54 PM   #15
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New here and looking for more info on the ground buss ideas?
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Old 01-26-2013, 04:06 PM   #16
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Replaced crank and cam ps, fpr, icm, and tested batt, starter, alt, no security light displaying. If I had more info on the ground buss and what to check, test, replace.
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Old 01-26-2013, 07:58 PM   #17
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The next time it won't start, there is a Shcrader valve on your fuel line above the upper intake. With the key on and the engine off press it down with something that won't damage it. Like a toothpick and see how the fuel pressure is. Power windows wouldn't be tied to its. Sometimes Vats keys go bad or get finicky, do you have more than one key?
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Old 01-27-2013, 09:28 AM   #18
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https://www.gmforum.com/electrical-1...1999-a-303224/

doesnt have to be as bad as the one in the pic, mine was getting intermittent all you could see was the one wire starting to look melted

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Old 01-27-2013, 03:20 PM   #19
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Actually, the power windows, power locks and I believe even the tail lights are tied to this common ground.
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Old 01-27-2013, 07:51 PM   #20
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That ground is located, where? Drivers side under dash? I'm not near the car today...
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