ok when i start my car in the morning or at anytime its been sitting for a while it idles really rough bounces from 1k to 3k but once the car is warmed up its fine and goes away, now i kno it could be the iacv but i was wondering if itcould be anything else since it only does it till the car warms up any suggestions ?

 

does it take a long time to start?

 

make sure the coolant is full

 

not a thread jack but ,

i have the same problem, when i first start it up it idles at 1200 then slowly goes up to 1800-2k. takes a long time to warm up then the idle goes up anddown also at a stop / redlight the idle stays at 1k-1400 them takes a long time to settle to 800. really need some help also

replaced the TB gasket
cleaned FITV and IACV
check for vacum leaks.
coolant is fill
i am lost

 

Ok guys..

Check you air intake temp sensor. Should be on the intake maifold.

Sensor should be black or white, and on the last runner closest to the driver's side.

An easy way to check this out is to jump your ECU and if it blinks once (Code 10) thats definately your problem.

Sometimes you can just clean you IACV located on the back of the manifold with carb and choke cleaner and compressed air. (Works half the time)

 

thanks
cleaned the IACV and FITV... but same thing

 

What is the fitv?
Sometimes it can be the coolant temp sensor.

 

fast idle thermo valve under the TB

 

will check it out

 

Take the cover off of the FITV (2 smalls screws). Make sure the valve is screwed into the case tightly.

 

k and easy way to see if its the iacv is take your intake tube off your throttle body, (with the car running and idleing bad) there are i think 2 holes in your tb inside plug one of them with your finger , i forget which one , if the idle smooths out you need to replace or block off your iacv

 

ok cleaned the FITV , IACV, TB and IAT sensor again, now its better than before but still have to adjust the idle a little. thanks