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#1
10-03-2009, 09:40 PM
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99 SSEI Help
99 SSEI Bonnie, lacks power at drive speed. Idles fine though. I hit the gas bogs down and doesnt want to go. I have changed the fuel pressure regulator, the fuel filter, coil packs, ignition control module. i have checked fuel pressure and vacuum pressure both are good. No check engine light comes on. Go figure. The wires and plugs are good. I did however change the crankshaft sensor and harmonic balancer last year. It came from autozone and was a doorman. I was told those went out in like 6 months in ideas. Well any help on this would be appreciated. Thanks Tommy
Oh I am aslo selling a 88 GTA Trans Am Notchback. 
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#2
10-04-2009, 06:18 PM
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Re: 99 SSEI Help
Check the exhaust system back-pressure and see if you are within specs..
are you absolutely sure your fuel pressure is within specs under load? Also this fuel pump has a fuel pump control module ...
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#3
10-19-2009, 04:35 PM
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Re: 99 SSEI Help
You might want to look at your MAF sensor. Mine was bogging at highway speeds and miss awful bad at full throttle.
I pulled my sensor out and sprayed it with electrical contact cleaner and noticed an improvement. So I went ahead and replaced it with even better results. -Mike-
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