1994 Bonneville keeps dying. - 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 10-05-2009, 08:37 PM   #1
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Question 1994 Bonneville keeps dying.

Hi, I have a 94 Pontiac Bonneville, and it seems to drive great. But it seems that anytime I slow down, or come to a stop the car will die on me. When ever I'm driving the speed limit it seems to drive fine. Is there anyway I'd be able to fix this? Thanks for any help!
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Old 10-05-2009, 10:31 PM   #2
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Check for vacuum leaks. Spray carb cleaner on the vac lines, around the injectors, where the LIM attaches to the heads, around the EGR valve and around the throttle body. If the RPM changes, you have a leak.
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Old 10-05-2009, 11:06 PM   #3
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I'll check it out tomorrow, thanks for the help. I got it in the shop now getting the brakes fixed.
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Old 10-05-2009, 11:15 PM   #4
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Other things to check are fuel pressure, how old is the fuel filter. Your throttle position sensor, your PCV valve, check the spark plugs and wires, even the air filter.
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Old 10-05-2009, 11:27 PM   #5
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Not sure how old the full filter is. I just bought it this Saturday for only $800. It seemed like a steal. I'll definitely check everything out. Appreciate the help.
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Old 10-06-2009, 06:34 PM   #6
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Well it wasn't a Vacuum Leak. I haven't had time to check the rest today after I got it back from the mechanic. It died on me today while I was even driving it. I'm gonna try to check the fuel filter and hope that is what it is.
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Old 10-06-2009, 10:44 PM   #7
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When it dies does it sputter a bit, or is it like a switch was flipped and it'* dead?
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Old 10-07-2009, 02:03 AM   #8
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It dies like a switch was flipped. I'm having a diagnostics ran tomorrow morning.
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Old 10-07-2009, 08:01 AM   #9
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That sounds like a battery cable problem, have you cleaned them?
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Old 10-08-2009, 02:09 AM   #10
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Alright, I finally got it fixed, costed a pretty penny. Still gotta fix up quite a bit, but they said I should be good for awhile. I gotta get an Oxygen Sensor, Fuel Filter, Spark Plugs, and Fuel Injection Flush. I'm looking to pay $800 to fix everything. The price I payed for the car. As long as it works well though, I'll be fine.
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