You'll have to remove the throttle body to replace the idle air control (IAC) valve. First, disconnect the negative ground cable from the battery. Then remove the vacuum line and air duct intake. Then disconnect the IAC and throttle position sensor (TPS) electrical connections. Remove the coolant hoses that are connected to the IAC. Disconnect the throttle cable from the throttle body. Now, remove the 4 bolts that hold the throttle body to the manifold and remove. Be careful with the gasket located between the throttle body and manifold and replace it in the same position. On your clean work surface, turn the throttle body over and remove the 4 phillips head screws holding the IAC to the throttle body. Clean the parts with a dry cloth but do not use solvents on the IAC or TPS. That's it!
For idle issue,click the help links provided below :---
Bad miss at idle? http://technoanswers.blogspot.com/2012/01/bad-miss-at-idle.html---------- Engine stumbles coming off idle when warm?
http://repairhelpcenter.blogspot.com/2012/01/engine-stumbles-coming-off-idle-when.html
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While stop engine idles
like cylinder missing?
http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html
----------
Idle flair is noticed on car? Rough idle? car
will not idle? Erratic idle speed?
http://technoanswers.blogspot.in/2012/02/idle-flair-is-noticed-on-car-rough-idle.html
---------
High rpm in neutral? Inconsistant high RPM in
neutral?
http://technoanswers.blogspot.in/2012/02/high-rpm-in-neutral-inconsistant-high.html
---------
Erratic
idle on car?
http://schematicsdiagram.blogspot.com/2011/12/erratic-idle-on-car.html
--------------
Low idle when cold out
side?
http://repairhelpcenter.blogspot.com/2011/12/low-idle-when-cold-out-side.html
-----------
Idle Air Control (IAC) Valve Replacing?
http://schematicsdiagram.blogspot.com/2011/12/gmc-idle-air-control-iac-valve.html
-----------
intermittent engine failure while idle?
http://repairhelpcenter.blogspot.com/2011/10/1996-camry-intermittent-engine-failure.html
------------
Engine
quits at idle?
http://repairhelpcenter.blogspot.com/2011/10/engine-quits-at-idle.html
-------------
Car
overheats and Air blows hot at idle?
http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html
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Car
not starting or turning over indicates towards multiple possibilities. It can
be issue with battery or weak battery. But if battery checks out ok, then it
can be starter issue or faulty alternator or problem with low fuel pressure or
no spark at spark plugs due to dirty spark plugs or faulty ignition
coil or injectors getting cracked or dirty and needs to be cleaned.
To
confirm the problem, the basic troubleshooting is required.
Click
this link below and follow the troubleshooting:------
http://technoanswers.blogspot.in/2012/02/car-starting-issues.html
---------
This will help.
Thanks.
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