HELP! Problem With Bonni :( - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 06-15-2009, 10:55 PM   #1
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Default HELP! Problem With Bonni :(

Hey guys! My first post!!! Whoopie!
Now, the bad news. I believe I have a shift solenoid problem in my 1993 Bonneville. I cleaned the intake recently, and changed the filter. About a week later I have a problem... If i stomp hard on the gas, it wont shift into second gear. It just keeps revving at 5, to 6, to 5 until I let of the gas. My car has 178,481 on it. The engine is in superb condition, with a tune-up, spark plugs, and all new coil packs. Anyway, I wouldn't wanna buy a new tranny, and Idk if it'* a timing belt problem or not. I'm really car-illiterate. So can you guys help me?
Thanks guys!

Sincerely,
Steve

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Old 06-15-2009, 11:06 PM   #2
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I'm not the most familiar with your year and trans. But is it possible you knocked a vacuum line loose? Check over all the lines and wires.
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Old 06-16-2009, 01:45 AM   #3
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Aight I'll give it a looksy. I'll tell you what I find. If anyone can offer more info it'd be greatly appreciated.
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Old 06-16-2009, 07:31 AM   #4
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The vacuum line Dan is talking about goes to the shift modulator on the front of the transmission. It'll need that to shift.

Tune up and TPS also do a lot to control the shift. It would be nice if you could see what was happening on a scanner, most wouldn't do that level of scanning though. Maybe a free diagnostic from a trans shop would be the best route.
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Old 06-17-2009, 09:18 PM   #5
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Ok well, I checked it over. I'm going to look at that vac line you're talking about. Someone told me it'* the transmission and the clutchpad is well worn. But right before it shifts it gives a loud wine. werrrrrrrrrrrr errrrrr. Then shifts through. Usually perfectly. Sometimes, a knock... And sometimes, it'll just keep reving, and reving. 6 to 5 6 to 5 till I let off the gas.
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