87 Bonneville won't start - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat
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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 04-20-2008, 09:36 PM   #1
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Default 87 Bonneville won't start

I've got an 87 Bonneville, it'* been running fine lately. Today when I tried to start it up, I got nothing. Well, no cranking and no noise from the starter. It'* not the battery, as all the electrical equipment works. Here'* what I've got so far:

Jumped it - no luck

checked CEL codes - none

Tried starting it in park and in neutral - neither works

I'm assuming it has something to do with the starter solenoid, neutral safety switch, or ignition switch. Where/how do I start?

Thanks in advance!
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Old 04-20-2008, 11:16 PM   #2
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You start with the battery cables. Disconnect both (yes, I know everything else works, but that'* typical), and after you disconnect them, pull the boots off. Many many cases of this come up each month (a dozen or so) and the corrosion prevents enough current for the starter, but provides enough for the other accessories.

You SHOULD disconnect all cables at each end (positive and negative alike, where each end terminates), break them loose, clean them up, and apply dielectric grease to every point before reassembly.

I've been bitten by the same bug myself twice, and watch them regularly on this forum. That is your most likely culprit.

Tell us what you find, and we'll take it from there.
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