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1987-1991 Parley with regards to your 1987 to 1991 Bonneville, Olds 88 or Buick Le Sabre Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 07-28-2007, 12:04 PM   #11
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Check for fuel injector pulse.
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Old 07-28-2007, 02:27 PM   #12
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Just to establish a few things here.

Is your fuel pump making any abnormal noises?

Have you changed your fuel filter recently?

Have you checked the function of your FPR? Turn your ignition on a few times, does your fuel pump prime once? Twice? or every time? Longer, then shorter, then not at all? or Equal.

Use the prime connector, the green wire next to the battery, hot wire it and then check your fuel pressure. Listen for any abnormal noises at the fuel rail while the pump is priming via the hot wire.

ALSO. for a good starting test, crank it for about 3 seconds and hit the gas, even if fuel pressure is low, you should feel the engine catch. This is how i started mine with a bad FPR. Try that out with a few variations in timing on hitting the gas pedal, but make sure you hit it after you start cranking. Not too much because then it won't start, 1/3 throttle should do. Lets see how that does.
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Old 07-28-2007, 03:36 PM   #13
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It is getting injector pulse, changed the coil pack with a new one. Nothing. I am going to try a compression test. It will probably be Monday before we can check that.
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Old 07-29-2007, 12:22 PM   #14
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So you have:
48 PSI at the fuel rail
Spark at all 3 coils
Fuel injector pulse

I can't recall a car not starting that passed those 3 tests.
How long did the fuel pressure stay at 48 PSI after the key was turned off?
Have you tried checking for trouble codes?
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Old 07-29-2007, 01:59 PM   #15
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The only trouble code was the IAT. I think it is 24.

I just checked to see fuel pressure, I didn't leave it on for any period of time.
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Old 07-29-2007, 03:23 PM   #16
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If you still have the gauge see if the pressure will hold for 5 minutes.
If the gauge isn't handy see if the vacuum line going to the fuel pressure regulator has gasoline in it.
Have you tried starting while pressing the gas pedal to the floor? This will prevent the fuel injectors from firing & clear a flooded condition.
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Old 07-30-2007, 12:56 PM   #17
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can you start the car in neutral?

also it could be what alot of people forgot to mention is your (ignition switch).... if they go bad then your car really will not turn over......

i dont no if i mentioned this already but have you tried jumpstarting the car....?

also have you changed the ignition module?

what year is it? i might have some modules that will fit and you can use to try to see if thats your problem.....
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Old 05-14-2008, 10:03 PM   #18
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Sorry, I forgot to post the cure.

It was the Ignition Module or Computer or whatever, under the coils.

I thought that I posted the fix, but apparently didn't.

Thanks for all the help!
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Old 05-15-2008, 01:34 AM   #19
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Closure = good.
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Old 07-29-2008, 10:07 PM   #20
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I might have to try the same things; mine won't start.
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