[brianappj]

While researching cleaning the IAC on a 92 camry I have seen the steps to remove the throttle body and then remove the IAC. To do a through job it looks like the rotating valve should be removed from the housing. In the videos I have seen they stop at removing the IAC and appear to leave the valve in. Looking at pictures it seems the only way to remove the valve is to take off the back plate. I can see that the plate has elongated screw holes allowing it to be rotated and one video said not to touch this as it is calibrated at the factory. Maybe if I did take this plate off I still might not be able to get the valve out and then I would have messed up this calibrated part for nothing.
So, does anyone, when cleaning the IAC, go the extra step of removing the rotating valve or do you just scrub and clean it in place?
If you do remove it what do you take off to get it out without messing up any calibration?
After getting it super clean are there any spots I should grease or does the oil that causes it to get dirty in the first place enough to lube it up?

 

[surgeon0]

IAC assembly is below the TB. It is held by (+) screws. Normal cleaning involves removing this and slow cleaning with cotton tips until the chamber is clean. I also did the cleaning quick way after watching another video as I did not have time to remove it full. I do have the gasket (funny shaped o-ring type). I might do this when I do vc gasket replace... I had to do this on my 1mz v6. IAC cleaning here is no different than one done on honda either.

There are DIYs with pics on this forum. Take the concept and not the specific model-yr subforum...

In luck, search shows one in this section of forum:
http://www.toyotanation.com/forum/1...997-2001/356544-diy-removal-cleaning-iac.html

Read some tips from here, if it helps (but note the concept part.... part may look different but concept is same):
http://www.toyotanation.com/forum/1...ibe-tb-iacv-intake-clean-replace-gaskets.html


Take a look at this. Is this the part of it you are asking or the actual rotating valve inside the IAC?
http://www.toyotanation.com/forum/155-2nd-generation-2000-2004/1407898-diy-iac-cleaning-situ.html

 

[borwish]

On the wife's car I took the IAC off to clean it. I used q tips to get down in there and just rotated the valve by hand.

About two weeks ago I took the short cut way on my car and it made my starting problems disappear. It had been acting up for a few months, but I literally could not find the two hours it takes to do a proper job even though I had the required materials. It took less than 20 ninutes this way. I recommend using a philips head in a ratchet to remove the screws so you can use one hand to press in and the other to turn and avoiding stripped screws. I wore nitrile gloves and just plugged the vacuume line with my finger tip. The cleaner will destroy the gloves, so I used four gloves.

I might go back later and do the proper cleaning, but the short cut worked for me.

 

[JohnGD]

The Corolla DIY is a good one. Notice the magnetic motor is removed so you see a shaft with a round magnet at the end. Mark the orientation of that magnet, and also the cover plate for the bimetal thermostat on the other side. Lift the cover plate straight up, with two small flat screwdrivers if necessary so as not to disturb the bimetal spring. Then clean it until the rotor spins freely.

The problem often is carbon at the bottom of the rotor vane that's hard to clean even if you soak the valve. Disassembling it allows for the best cleaning, but just make sure you put everything back according to the markings you made.

 

[mcgowaw]

if i could add something new i learned from this board the other day. get a jis +2 screwdriver and it'll make the job of removing what appear to be phillips screws on the assembly. a phillips screwdriver will strip them if you're not extremely careful. the japanese JIS screwdriver works well on these cars. a shout out to whomever told us about them.
tony

 

[surgeon0]

I remember that post on JIS. I thought you did but yeah good reminder. There were pics of it in that post too.