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Old 07-31-06, 08:11 AM   #1
Nesbit
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Car Problem Question

My 94 Grand AM is having some problems and I would like to have some idea of what the issue is before taking it to a mechanic. About half the time I drive the 'Check Engine Light' comes on and the car slightly jerks back every time I take my foot off the gas. The jerk back is rougher the faster I am going. What could this be?
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Old 07-31-06, 08:24 AM   #2
4KRG
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Take it to an Autozone and have them read the codes
put the codes into google.com and see what you come up with
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Old 07-31-06, 08:31 AM   #3
BustaCones
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My car was doing something similar, turns out a cylinder was misfiring. Apparently its a relativelt cheap fix, or at least in my case it was, just needed some new ignition wires (i think).
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Old 07-31-06, 08:33 AM   #4
Nesbit
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How much did it cost you and if that is the problem I'm having is it an immediate fix? Saving up for a move at the end of the month.
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Old 07-31-06, 08:48 AM   #5
jonw9
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You should have a man go with you when you go to the mechanic. There are plenty of stories about shady automotive shops taking advantage of women that walk in.

As for the online diagnostics, could be a fuel filter, cheap fix, kinda messy. Could be plugs and wires. How many miles on the vehicle, and how long since last tune-up?
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Old 07-31-06, 04:09 PM   #6
cpgator
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Quote:
Originally Posted by jon-w9
You should have a man go with you
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Old 07-31-06, 08:18 PM   #7
D.Pham4GLTE (>60GB)
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Quote:
Originally Posted by 4KRG
Take it to an Autozone and have them read the codes
put the codes into google.com and see what you come up with
i think autozone's free scanner is obd2. i think most pre-96 models don't have obd2.
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Old 07-31-06, 09:30 PM   #8
crankyman
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i'd suggest you have a vacuum leak with those symptoms.

also, pick up a repair manual and see if your model year has a throttle bypass valve. could be that as well. easy to replace.
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Old 08-01-06, 01:30 PM   #9
Oraphus
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it could be a 100 diff things
loose spark plug wire
bad spark plug
loss of compression in 1+ cylinder
low on oil

are your rpms higher then normal at highway speeds?
does your car shift in to OD gear at highway speads?
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Old 08-01-06, 01:46 PM   #10
Nesbit
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It sounds like most of these problems would be solved by getting a tune up. Looks like that's what I will do. Sorry Oraphus no answers to your questions but I will keep an eye on it.
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Old 08-01-06, 02:03 PM   #11
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My car before the current one was a 2000 Chevy Prizm LSI. The Check Engine light kept coming on and wouldn't go off. I ended up spending about $1200 on the damn thing, all to no avail. Finally I traded it. I have heard that the light coming on is fairly common in some makes and models.
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