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2000 alero problems


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Sargehw
New User

Jul 25, 2012, 8:40 PM

Post #1 of 9 (2245 views)
2000 alero problems Sign In

I have a 2000 Alero 2.4

When you start it the engine runs ok, then it acts like it wants to shut off as the RPM goes up and down or jumps.........lost here need help

Replaced, coil packs, plugs, Air intake gasket,checked all hoses for any leaks, Idle control value, OT sensor bank 1.......not sre what else Ican do


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Jul 26, 2012, 12:28 AM

Post #2 of 9 (2212 views)
Re: 2000 alero problems Sign In

Clean throttle body and IAC. Get a code reading,

T



Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 26, 2012, 3:34 AM

Post #3 of 9 (2200 views)
Re: 2000 alero problems Sign In

You may have a bad IAC ( idle air control) but try eliminating any vacuum leaks and cleaning the throttle body first. Remove the intake snorkel, have someone hold the throttle wide open for you and scrub the back side of the throttle plate and surrounding bore with an old tooth brush and some carb cleaner. Be sure to spray some into the small holes next to the throttle plate. That should help stabilize the idle. If it still has a problem, replace the IAC.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Sargehw
New User

Jul 26, 2012, 7:04 AM

Post #4 of 9 (2187 views)
Re: 2000 alero problems Sign In

That was also replaced IAC. No codes as they have all been cleared


Sargehw
New User

Jul 26, 2012, 7:06 AM

Post #5 of 9 (2187 views)
Re: 2000 alero problems Sign In

Hammer

I did also replace the IAC and have cleaned out the Ing. Module. this is driving me nuts. no vacum leaks, sprayed 2+2 around and unable to see and draw from spraying. 141345 miles,


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 26, 2012, 7:08 AM

Post #6 of 9 (2186 views)
Re: 2000 alero problems Sign In


Quote
nd have cleaned out the Ing. Module.


What the Hell does that mean?



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Sargehw
New User

Jul 26, 2012, 7:16 AM

Post #7 of 9 (2177 views)
Re: 2000 alero problems Sign In

Sorry got ahead of myself and not thinking, All was done with replaceing the IAC, and the cleaning.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 26, 2012, 7:55 AM

Post #8 of 9 (2167 views)
Re: 2000 alero problems Sign In

Then you will need a good scan tool to analyze what is happening.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



lubeman
Novice

Jul 28, 2012, 7:10 AM

Post #9 of 9 (2129 views)
Re: 2000 alero problems Sign In

does it have a MAF sensor, if so, is there any change if you unplug it?






 
 
 






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