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#1
06-18-2009, 11:14 AM
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High RPM on starts and at random times while driving
2001 Alero 3.4L, just noticed that its been starting at high RPM and if keeped in park and you don't touch the brake pedal it just keeps increasing. But once you hit the brake it goes back to normal. Also at random times while driving it starts increasing the RPM for no apparent reason. Any ideas?
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#2
06-18-2009, 08:40 PM
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Re: High RPM on starts and at random times while driving
Probably high IAC counts. Try removing the idle air controller (IAC) located on the throttle body and clean it. Carbon builds up on it. Also, be sure to clean the seat where the IAC mounts on the throttle body.
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'08 Pontiac Grand Prix GXP (Dark Slate Metallic) - LS4 5.3L V8 '02 Oldsmobile Alero GL2 - LA1 3400 V6 '99 Buick Regal LS - L36 Series II 3800 V6 '03 Honda CR250R MX - 2 Stroke 250cc '97 Pontiac Grand Prix GTP - L67 Series II 3800 V6 Supercharged (Sold) Timeslip 08/12/06 AF Community Guidelines
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#3
06-18-2009, 09:32 PM
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Re: High RPM on starts and at random times while driving
Where would that be located? I changed the oil and air filter and that help some.
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#4
06-19-2009, 01:30 AM
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Re: High RPM on starts and at random times while driving
On the throttle body which is the part the accelerator cable connects to and allows air into the engine. Between the upper intake manifold and air intake. See pics.
And please use caution or better judgment using the "Report Post" function to get assistance.  Location of IAC on Throttle Body  Idle Air Controller (IAC)
__________________
'08 Pontiac Grand Prix GXP (Dark Slate Metallic) - LS4 5.3L V8 '02 Oldsmobile Alero GL2 - LA1 3400 V6 '99 Buick Regal LS - L36 Series II 3800 V6 '03 Honda CR250R MX - 2 Stroke 250cc '97 Pontiac Grand Prix GTP - L67 Series II 3800 V6 Supercharged (Sold) Timeslip 08/12/06 AF Community Guidelines
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#5
06-22-2009, 11:10 PM
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Re: High RPM on starts and at random times while driving
Ok thx for the help its running really well now
 And sorry about the report thing I wasn't paying attention and thought it said reply 
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