97 Bonneville won't start - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 01-18-2007, 08:01 AM   #1
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Default 97 Bonneville won't start

Got a 97 that when its cold weather it just won't start. warm weather it cranks right up.
It'* not the battery,motor turns over just fine,only thing i have put on the car is a crank sensor back during the summer?could i possibly have bent 1 of the tabs behind the harmonic balancer>???any ideas?
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Old 01-18-2007, 08:14 AM   #2
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Check for spark, Suspect coils.
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Old 01-18-2007, 10:36 AM   #3
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Default Re: 97 Bonneville won't start

Quote:
Originally Posted by shen
could i possibly have bent 1 of the tabs behind the harmonic balancer>???
If you bent a tooth back, you car would not start at all(Personal experience).
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Old 01-18-2007, 07:27 PM   #4
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I also think checking the coils should be at the top of the list. Here'* a how-to article.
http://www.bonnevilleclub.com/forum/...e=article&k=33

How old are the plugs & wires?
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Old 01-18-2007, 07:35 PM   #5
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plugs are new..wires look ok?will be putting new 1'* on,also note that when it finally does crank,after turning the motor over and over many times,it finally starts but at a rough idle,then all of a sudden it just clears right up....if it was the coil why only when its cold./
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Old 01-18-2007, 07:41 PM   #6
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You need a hotter spark to fire the richer mixture. My 89 was doing the same thing.
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Old 01-18-2007, 08:01 PM   #7
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So you are saying to put in hotter plugs?
Know which 1'*?
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Old 01-18-2007, 08:06 PM   #8
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No, He'* saying you have weak spark. Check your coils.
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Old 01-18-2007, 08:18 PM   #9
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Yep - check the coils.
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Old 01-18-2007, 08:58 PM   #10
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What kind of gas are you using? Are you using a winter blend fuel?
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