My Bonnie is sick, please help. - 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 07-17-2005, 11:54 AM   #11
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Thanks Willren, I suspect fuel also. You think maybe the injectors could be clogged? I'll see about getting the fuel pressure checked this week. I put a bottle of HEET and some injector cleaner and told my wife to put premium in it for awhile. I'm hoping it is a problem that will work itself out. (If I should be so lucky ) It seems like this car almost fixes itself most of the time. Best car I've ever owned. Thanks for all the help guys, I'll keep you posted.

BTW, Willren, when I was talking about playing around with my Bonnie after we get a new car, the picture of the engine bay on your posts is exactly what I was talking about. Beautiful man!
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Old 07-17-2005, 12:17 PM   #12
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Quote:
Originally Posted by garmar
Thanks Willren, I suspect fuel also. You think maybe the injectors could be clogged? I'll see about getting the fuel pressure checked this week. I put a bottle of HEET and some injector cleaner and told my wife to put premium in it for awhile. I'm hoping it is a problem that will work itself out. (If I should be so lucky ) It seems like this car almost fixes itself most of the time. Best car I've ever owned. Thanks for all the help guys, I'll keep you posted.

BTW, Willren, when I was talking about playing around with my Bonnie after we get a new car, the picture of the engine bay on your posts is exactly what I was talking about. Beautiful man!
I doubt the injectors are clogged. That'* actually quite rare, and it wouldn't clog more than one anyway. I suspect a weak fuel pump or FPR primarily. One thing to check quickly is to disconnect the vacuum line to the FPR on the back side of the fuel rail. Does gas leak out? If so, that'* an indication of a problem. And how old is your filter?

Premium won't benefit you in any cleaning sense. It has the same detergents that low-grade and mid-grade have. Stick with Chevron gas for a couple tanks and see how that does, or run an aftermarket fuel system cleaner for two consecutive tanks.

My engine will look even better soon.
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Old 07-17-2005, 12:27 PM   #13
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Originally Posted by garmar
Well, I just ran the codes. All I got was the code 12 diagnostic. I hope this doesn't indicate something more serious wrong with the ECM. I'll keep working on it. Thanks guys.
code 12 is jus usually the entering diag mode code thats all it flashes 3 times then the codes come up next then flashes 12 again when its done
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Old 07-17-2005, 12:27 PM   #14
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Old 07-17-2005, 01:22 PM   #15
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Thanks Kennginn, thats the instructions I used for getting the codes. I waited for the 3 diagnostic code flashes, thats all I got, it just flashed 1, 1-2 over and over. Thanks for the link.

Willren, the filter is new, put on yesterday. Should I pull the vacuum line while it is running? I'm assuming so. I was thinking the higher octane stuff would be better since I'm having troubles, if not I won't waste the $. Thanks guys.
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Old 07-17-2005, 05:18 PM   #16
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I think I might have an idea of what happened now, I replaced the plugs 3 months ago, at the time the wires looked fine, but as you guys know you can't tell whats going on inside unless you put an ohm meter to them. I think the wires gradually failed and fouled out the plugs. I guess while I was moving them around changing the plugs, they came apart inside, Is this possible? The reason I'm thinking this is because now that I've replaced the wires, it runs better every time I drive it. Could the plugs be burning off the excess gas that built up on them? I'm gonna pull them and check them out. I put the 185 degree thermostat in and it still runs hot, about 200, better but not great. Next I'll flush the radiator out.
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Old 07-17-2005, 05:23 PM   #17
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Did you get your cooling system flushed?
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Old 07-17-2005, 06:49 PM   #18
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Did you get your cooling system flushed?
Not yet, I work night shift and I start on Sunday so my tinkering with it is probably done for a day or so. I'll keep you guys updated on what'* going on. Right now it'* running great. (Fingers crossed)

Also I think I may need a new radiator because the one I have now has a crack on the top of the plastic tank at the water inlet, so not sure how to proceed yet.
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Old 07-17-2005, 10:05 PM   #19
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Replace the radiator, put enough coolant in the system ( or straight water if it'* a short drive) to get you to the shop and get your cooling system flushed after you install your nice shiney new radiator.
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Old 07-18-2005, 04:48 PM   #20
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OK guys, it'* going crazy again. I have been thinking about the problem and the opinion here is that it'* the FPR or pump. I've had several people tell me it sounds like the fuel pump. I noticed awhile ago when I pushed in the schrader valve while it was running, a very feeble spray came out. They are generally under alot of pressure even when the engine is not running. My question is, how can it not be getting enough fuel, and dumping it out the exhaust in large enough quantities to make the rotten egg smell? Icorrect fuel/air mixture, causing incomplete burn? All of your help has been greatly appreciated. Ordinarily I would just replace the fuel pump just to rule it out, but I HATE messing with fuel tanks and I don't wanna go in there without 100% certainty that that is the problem. Thanks guys.
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