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89 Pontiac Grand Am running rough...need help!
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TarHeel487
New User
Jun 24, 2010, 10:54 PM
Post #1 of 2
(1614 views)
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89 Pontiac Grand Am running rough...need help!
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I don't know a lot about cars, and this being my first car I am a little clueless, and haven't been through a lot with cars. Anyway, when I start it up, and it idles it sounds a little rough and sounds like its idling too high like it's trying to get some fuel or air. I take off and it hesitates a little getting up to about 30-40 and then it's fine. When I start slowing down it seems like it hesitates and putters from 60 down to about 45 then it's fine. Does anyone know what this might be? Also, I want to add sometimes when I'm riding along it just seems like it idles up possibly and putters.
(This post was edited by TarHeel487 on Jun 24, 2010, 10:56 PM)
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Sidom
Veteran
/ Moderator
Jun 24, 2010, 11:24 PM
Post #2 of 2
(1604 views)
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Re: 89 Pontiac Grand Am running rough...need help!
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I would probably start off with making sure there isn't any vacuum leaks.
Listen to the engine while it's running and listen for any "hissing" noises, the could indicate a leak.
Also get a can of carb clean and spray around the vacuum hoses, lines, throttle body base & intake manifold, any change in idle would indicate a leak........
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