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06-10-2009, 09:08 AM
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#1 | |
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AF Newbie
Join Date: Jan 2005
Location: knoxville, Tennessee
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01 grand am rough idle
I have an 01 grand am w/ the 3400. i have 201k miles on it. about 10k miles I gave it a tune up, (plugs, wires, etc) This morning on my way to work when I stopped at a light it started shaking. It was idleing really rough, almost like it was missing on one cylinder. As soon as I am above 5mph it runs great again.
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06-10-2009, 10:49 AM
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#2 | |
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Banned
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Location: chicago, Illinois
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Re: 01 grand am rough idle
is your rpm fluctuating when that happens?
give more details when this happens. Every day? Only when engine is warm? etc........ |
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06-10-2009, 11:32 AM
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#3 | |
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Re: 01 grand am rough idle
I first noticed it on my way to work this morning. I drive about 100 miles a day. I live about 25 miles out of the city and I didn't notice it this morning until I got in town and stopped at a light. It normally idles around 600 RPM's. When it's idleing rough the tach moves just a tiny bit, like maybe 25 RPM's if that. Barely noticeable. It ran great above 1200RPM's, but when I came to a stop, both in park and in any gear.
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06-10-2009, 04:31 PM
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#4 | |
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out saving the world
 
Join Date: Jul 2005
Location: Yourtown, Indiana
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Re: 01 grand am rough idle
Sounds like a misfire situation. Did any of the service lights come on when this happens ?
Might double check your wires and make sure they are all tight.
__________________
1999 Grand Am SS 3.4 OHV 
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06-10-2009, 04:55 PM
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#5 | |
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Banned
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Re: 01 grand am rough idle
and vacuum lines for leaks.
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06-10-2009, 08:49 PM
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#6 | |
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Re: 01 grand am rough idle
thanks for the suggestions guys. The SVS light has been on for several months, but I am 99% sure that's because one of my headlights and one of my fog lights are out. I almost never drive at night so haven't remembered to replace them yet. As soon as it stops raining here I'll check my wires/vacuum hoses etc.
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06-11-2009, 12:08 PM
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#7 | |
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Re: 01 grand am rough idle
yeah, SVS is stuff like your lights and SES are your sensors, engine, and transmission.
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06-11-2009, 12:39 PM
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#8 | |
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Re: 01 grand am rough idle
OK found the issue. Therer was a hole melted in the back of my rubber PCV elbow. Not quite sure how that got there but I replace the PCV valve and the elbow and it's back to running normal now.
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06-11-2009, 07:21 PM
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#9 | |
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out saving the world
Join Date: Jul 2005
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Re: 01 grand am rough idle
Glad you found it and was an easy fix !
 Yes SVS is none critical stuff, like your high heams(not your fogs). And a maybe a few other problems would trip this too. 
__________________
1999 Grand Am SS 3.4 OHV
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