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2000 pontiac grand am high rmps on start


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golfbumm
New User

Jul 26, 2013, 6:13 PM

Post #1 of 8 (1030 views)
2000 pontiac grand am high rmps on start Sign In

2000 pontiac grand am se 2.4L starts at around 2000-2400 rpms after sitting for a period of time(ive only noticed the problem overnight). After about a minute or two it will idle down to normal (about 1000 rpms) But it will not do it after being ran just once(ex: start up in morning with high rpm, go to work, start up again to go home, doesnt do it). It also has a slight fluctuation on idle, almost like a vac leak.


Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Jul 27, 2013, 9:20 AM

Post #2 of 8 (996 views)
Re: 2000 pontiac grand am high rmps on start Sign In

Check engine light on? If so, what code(s) numbers are being stored?





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golfbumm
New User

Jul 27, 2013, 12:15 PM

Post #3 of 8 (984 views)
Re: 2000 pontiac grand am high rmps on start Sign In

There are no codes, and no lights are on


Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Jul 27, 2013, 2:30 PM

Post #4 of 8 (979 views)
Re: 2000 pontiac grand am high rmps on start Sign In

You should check for vaccum leaks when the engine is cold. Best thing to use would be a smoke machine to find the leak because you don't need the engine running to see it. Call around some shops in the area to see if they can check it out for you.

It may be normal for it to a have a high idle speed when first started cold in the morning, so keep that in mind.





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charirb
New User

Jul 27, 2013, 4:08 PM

Post #5 of 8 (973 views)
Re: 2000 pontiac grand am high rmps on start Sign In

It seems to happen in the morning on the way to work. Usually the same place or it just stumbles like its gonna stall then gets going. I assume if its a vacuum leak it will just get worse and give out?
It starts right back up too. Sometimes i can go a week and it wont do a thing. Then stalls one days and goes another week.


Discretesignals
Ultimate Carjunky / Moderator
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Jul 27, 2013, 4:16 PM

Post #6 of 8 (971 views)
Re: 2000 pontiac grand am high rmps on start Sign In

Ok your first post you stated it idled high during a cold start.

Now you saying it intermittently stalls out?
Is the high idle intermittent also?





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.


golfbumm
New User

Jul 27, 2013, 9:58 PM

Post #7 of 8 (961 views)
Re: 2000 pontiac grand am high rmps on start Sign In

That's not my post, it doesn't stall out, never has


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 28, 2013, 4:48 AM

Post #8 of 8 (955 views)
Re: 2000 pontiac grand am high rmps on start Sign In

I think that poster got confused and posted to the wrong thread. He has a thread about a 2000 Impala with similar issues.



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