2.4L LE5 Performance Tech 16 valve 171 hp EcoTec with 163 lb-ft of torque

2.4L engine rpm's issue?

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Old 03-31-2007, 06:41 PM
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Question 2.4L engine rpm's issue?

Ok I wasn't sure if I should put this in problems etc but its a 2.4Lss so I put it here.. Soo this is what happened..

I went for a cruize in my town here and yes I was speeding (140kmph) on a nice stretch. And anyways I had been off and on the gas before such event mentioned when I started to take her easy and let her come back to earth when I noticed the rpms were'nt coming down as quik as you would think!! Then they would and go up again and I would have to give her some gas to knock em down again..

Just curious if anyone with any model Cobalt has had this problem?? I push my car good sometimes and have never had this issue b4Did I something up??[/B]
Old 03-31-2007, 08:49 PM
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Even when my car is not in gear and I coast down a hill or move at all for that matter my RPM's rise for some messed up reason
Old 03-31-2007, 10:20 PM
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mine does this regularly, and even at low speeds. its like the throttle is getting stuck or something. i havent had it checked yet.
Old 04-01-2007, 12:14 AM
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Are you automatic?
Old 04-01-2007, 08:58 PM
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5spd
Old 04-02-2007, 12:29 AM
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ya I'm a 5 spd I think it may be gas cause I put the regular back in (esso regular) and it seems fine now..
Old 04-02-2007, 12:52 AM
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i took mine in awhile ago, for a similar reason, in my 2.4L auto, i could shift into neutral, and itd rev to 2.5k RPM...they said its the TPS was screwy....
Old 04-02-2007, 12:56 AM
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Originally Posted by TCarter
i took mine in awhile ago, for a similar reason, in my 2.4L auto, i could shift into neutral, and itd rev to 2.5k RPM...they said its the TPS was screwy....
Did they fix anything?
Old 04-02-2007, 01:05 AM
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No, I didnt feel like them ******* it up.

They always tend to brake something else thats not warrantied each time im in there under a warranty.


I go in for my springs being too squeeky....few days later, my rotors are warped and my brakes are shot because of the uneven surface....they said its because of the way i drive my car.

I just need to wait until my warranty expires, so I can do all the work myself.

Last edited by TCarter; 04-02-2007 at 01:05 AM. Reason: Automerged Doublepost
Old 04-03-2007, 10:55 AM
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Originally Posted by TCarter
i took mine in awhile ago, for a similar reason, in my 2.4L auto, i could shift into neutral, and itd rev to 2.5k RPM...they said its the TPS was screwy....

IS it suppose to rev higher than that cuz i have that same issue but isn't that just the rev limiter?
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