97 Bonneville won't 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 01-18-2007, 09:47 PM   #11
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I'd leave a fuel pressure guage on it over nite. See what the pressure reads on a cold morning.
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Old 01-19-2007, 08:36 AM   #12
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I'd consider the ignition module after you try the coils. I had the same problem on a Series 1 3800 and it turned out to be the ignition module.
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Old 01-19-2007, 09:11 AM   #13
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As CFoote mentions..the ICM is a suspect.
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Old 01-22-2007, 11:43 PM   #14
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Put on a different coil,still the same...but when i go to fuel rail and check pressure with car turning over i get pressure but with car turned off i get no pressure on the valve at all,fuel pump problem?also the gas gauge acts up....thinking a bad or loose fuel pump??
???
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Old 01-23-2007, 08:15 AM   #15
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We need you to get the fuel pressure tested.

Low fuel pressure can be a pump or a fuel pressure regulator.
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Old 01-25-2007, 05:17 AM   #16
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where is the regulator locsted?haven't got aroun d to testing the pump yet work out of town but 1st on list.....
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Old 01-25-2007, 05:53 AM   #17
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The regulator is on the fuel rail with a vac line going to it. Underneath the black cap on the rail is a schrader valve where you can check the fuel pressure.
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Old 01-27-2007, 05:59 AM   #18
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Guys I put on a j/yard fuel pump and the car works like new...now going to find out why when i floor it the check engine light starts flashing..cat converter?
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Old 01-27-2007, 09:03 AM   #19
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well guys i was wrong went out this morning(cold) would not crank again??i notice if you just turn the key over for like a second it acts like it wants to crank,if you turn the motor over and over if seems not to fire>?what can this be
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Old 01-27-2007, 10:19 AM   #20
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Flashing check engine light is a possibly catalyst damaging condition.

In my limited experience the only time I saw this was when I had a bad coil. The kicker of the issue was.(it was summertime BTW) the coil tested bad at that moment. When the car cooled, the coil was testing good. I know it'* cold, but you need to test those coils before you try cranking the car over. I think it'* possible you have a bad coil or ICM that only acts up under cold conditions.
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