97 Bonneville won't start - Page 4 - 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 02-02-2007, 11:00 AM   #31
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From the other thread....

OK, this is geting me confused. So help me get it straight.

You said that your FPR was bad. Yet your fix was the schrader valve on the fuel rail.

Did you ever really do anything to the FPR? Have you rechecked your FPR? Take the vacuum line off at the FPR and look for fuel or fumes. Either will indicate a bad FPR.

From what I can tell so far, you haven't convinced me that you've resolved your fuel issue. A bad FPR can cause your symptoms and can also be dangerous. I suggest you re-address that and let us know what you find.

Also, if you are cranking, then why do you suspect the ignition switch?

Please answer all the questions above as clearly as possible as I am having a tough time understanding you. The more detail you provide us, the better we are able to assist you.
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Old 02-02-2007, 01:00 PM   #32
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Shen, you're doing yourself more harm than good at this point. Please answer Lash'* questions above the best you can. You don't have a major problem here, but you're complicating it by running in 20 different directions at once.

Slow down a bit, and we'll take it step-by-step.
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Old 02-02-2007, 08:41 PM   #33
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Ok guys here goes.Cold weather not cranking..thought fuelpump changed it. thought
plugs wires changed those..changed fuel filter,changed coil pack and ICM from junkyard..i can take #1 wiire off and get spark if i bump starter but if i hold down switch and let motor turn over and over no fire,I haver to bump start it(its not the starter)to get it to fire,then after maybe 30 or 40 bumps of the starter i can get it to finallly crank,running rought for a few seconds then clears right up..once motor is warm car cranks with a bump of the starter,but once it sits over night and cold weather i have to bump i to get it to fire to crank,
ok update hooked to a scanner today had random misfire code and mass flow sensor,misfire code was proballly stored from bad plugs and wires.replaced mass air sensor,waiting till cold morning and see what happens??
could it possibly have anything to do with the security codded keys system?? the reason it doesn't want to fire till you bump over the motor
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Old 02-02-2007, 09:13 PM   #34
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regarding the misfire: at least check to make sure that the rear plug wires are not touching the O2 sensor or sensor wires.

Would you ease my mind and check the vacuum hose to the FPR and let us know what you find?

And as an aside, I find myself asking...do you work for or near a parts yard? You are replacing a lot of expensive parts in a very short time.
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Old 02-02-2007, 09:23 PM   #35
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Oh, and Shen, Where do you live?

Maybe you live close enough to one of us that we could assist.
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Old 02-02-2007, 10:46 PM   #36
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Ok Iash i did check the wires and they are ok,and yes junk yard is close and parts were cheap,I got like 40 bucks total except the new plugs and wires..Yes i did check the fpr regulator,and no smell of gas through the line(vacum) and lol yes i got the fuel rail and fpr for free today ,guess cause i got a fender and door (cheap)...I am gonna try the car in the morning and see what happens,(note) was looking at gauges tonight and was noticing the amp meter would drop and go back up,causing the car to idle up and down?
the only ground i haven't checked is the 1 near the oil filter??can anyone give me a idea where it is?or maybe even a pic?I will post back in the morning and tell what happens..
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Old 02-03-2007, 09:04 AM   #37
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Ok got up this morning and tried cranking again, nothing again....?
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Old 02-03-2007, 11:13 AM   #38
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Ok. I've totally lost track of everything in this topic (since it'* been in 3 different topics).

1. What'* your fuel pressure with the key on, ignition off? How fast does it bleed down after you key off?

2. Do you have a strong spark at each of the front three cylinders when you crank?
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Old 02-03-2007, 12:56 PM   #39
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Ok i got good fuel pessure..but not firing on the 3 cylinders,when i bump the started i can get it to spark once in awhile?it done this before and i changed out the crank sensor?you know how to check it?
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Old 02-03-2007, 01:01 PM   #40
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No spark is typically going to be the crank sensor or ICM. I assume you've tested your coils with the procedure in Techinfo?

Out of curiosity, what was your fuel pressure when you checked it?
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