New-b needs help! - GM Forum - Buick, Cadillac, 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.

New-b needs help!

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Old 07-20-2012, 03:40 PM
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Unhappy New-b needs help!

I just bought a 92 Bonneville SE and I have an intermittent hesitation issue. Engine power seems to surge- sometimes it is totally fine and other times it has a lot of trouble. RPM'* and oil pressure drop, come back, drop, come back. I don't even know where to start. It could be an oil issue because the pan has a good size dent in it, but I don't know why it would be intermittent if that was it. Don't know if oil pressure is the cause of the problem, or a symptom of another problem. PLEASE HELP!
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Old 07-20-2012, 03:44 PM
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Oil pressure is going to drop along with the engine RPM, this is pretty much normal.

Let'* start with the basics.
Last time tune up was done?
Oil change done?
Any other mechanical maintenance that you are aware of that was done recently(past year).
Any modifications?
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Old 07-20-2012, 03:46 PM
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Moved to the 1992-1999 Bonneville section for better visibility.
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Old 07-20-2012, 03:51 PM
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Is the SES light lit and/or flashing?
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Old 07-20-2012, 03:53 PM
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Oil change was done as soon as the problem happened. The car sat for a few months before i bought it but fuel stabilizer was in it. I haven't done a tune up yet (just bought it). Only other thing I have done to it is it had two starting issues- both electrical. Neutral safety switch is bad so I just made a bypass circuit with a start button in the door (because im broke and a new switch is $120) and the key pellet contacts werent reading properly so I spliced in a series of resistors to match the key'* ohms to bypass the securit y system. No performance mods.
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Old 07-20-2012, 03:55 PM
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No check engine lights lit or flashing, but it does work because it comes on when you turn the key on, then goes out when you start it.
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Old 07-20-2012, 03:56 PM
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Previous owner good ne about the intermittent hesitation issue so i know it wasn't caused by the electrical work I did to it.
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Old 07-20-2012, 03:58 PM
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So, you have only owned this car for a short period, and it has sat for a few months prior to that? Besides the electrical issues that you seem to have handled in a redneck way(bravo!), I'm going to suggest a tuneup. Sparkplugs, wires. Clean the MAF sensor with MAF sensor safe cleaner. I think that'* about it for now.

Oh, I see Roy already asked but you didn't answer. Check engine light?
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Old 07-20-2012, 03:59 PM
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Told me*
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Old 07-20-2012, 04:03 PM
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I really appreciate the quick responses folks thank you! No check engine light. I know I should do a tune up asap, but can you guys give me any pointers on diagnosing the problem without throwing parts in it to see if that fixes it? As I said I'm broke, and i don't want to spend money on stuff that might be fine.
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