High idle after afm and icv cleaning - **FIXED** SEE LAST POST

[amcink]

Have you tried to wiggle the elbow going into the throttle body? Every time someone tries to clean the ICV, he/she always manages to make that connection loose.

Yeah that thing is thight

[AlphaE]

only difference from before you did the work and now is that you created a vacumm leak..
This morning= before you messed w it= no vacumm leak=ran normal
Now=after you messed w it= vacumm leak= runs like pooh

the odds of messing something up the actual idle valve are slim to none i would think.

SMOKE IT!!

[amcink]

Ok just smoke it with some marlboro and that thing is thigh nothing came out. And the car still fluctuate between 1k to 1.5k. I unplug the ICV while it was running and it revs up to 2k and then keeps goes back and forth. I believe i mess up the ICV. Any thoughts?

[dnguyen1963]

You need to keep the pressure between 2-4 psi if you want to find vacuum leaks.

[amcink]

You need to keep the pressure between 2-4 psi if you want to find vacuum leaks.

I was able to get smoke smoke out of the hole on the elbow where the idle control valve goes (since i used the hose from the elbow to the icv to blow smoke. So it did a full circle

[FLG]

You need to keep the pressure between 2-4 psi if you want to find vacuum leaks.

Again..

You need it done right.

Sent from my Galaxy Nexus using Tapatalk 2

[amcink]

Found a great article on how to test the idle system. I will follow it and see what i found.

http://www.verrill.com/car/e30_idlefaq.shtml

[amcink]

**FIXED**

Ok, So i follow the ICV section of the above link. I test the ohms and it was fine.

Then i took the ICV off again and did a better job on cleaning it. It seems that my ICV was full of gunk and my first try of cleaning created a problem since i did not took out all the gunk out and the gunk that was left keep the ICV from closing; therefore creating a vacuum so the continuous surge of the idle.

After a through cleaning and carefully turning the inside of the ICV (to try to hit all the areas and clean out all the gunk) I test it by plugging back the electrical plug to the 2 prongs but not installing the hoses; then turning the key to the 1st position and verifying that the ICV inside closes properly (I did this few times to make sure it was closing properly). Finally I install all back and started the car and the idle is at 900 with out any surge. I also adjusted a little the screw on the ICV to manage the air flow and everything is working fine at this time. Idle is perfect at 900 and the car sound great.

UPDATE - ok ICV was gone i clean it too much that the computer could not control it. It was idling at 900 the creep to 1200 and the started oscillating again. I got one from a fanatic. Did a quick clean and install it. Idle is perfect. So make sure you use carb cleaner and NOT break cleaner and never a wd40.