How to guide, clean IAC Valve 56k, be patient! BIG PICT

Here how to dismount valve IAC of a 3VZ-FE. This handling is more complete because one of screw capeau did not want to unscrew itself normally. The goal of all that is to eliminate a jerked acceleration when the engine is cold.





1, locate the IAC Valve











2, unplug all hoses and vacuum. be careful, there is a line of coolan on this valve. Then made this handling only if the engine is cold.







3, unplug the "power" of the valve





4, Unscrew the two principals screw





5, remove the valve







6, There is all the material needed ... 3 new screw, and the gasket (from toyota dealer for 5CAN$)





7, Here the culprit of this handling more complete than has the practice





8, Unassembling the valve









9, Lubricate screws it without end after having removed the rotor. I did it with a mixture of white grease and WD-40







10, Clean this part of the valve ...





11, Close it again





12, Position back all.







Start the engine. Personally, it has to stawl 4 times before having a normal idle speed. Then it has stawl on a red light... and after all was perfect. then I concluded that its took a normal cycle of functioning so that the valve takes again its function correctly

Reply 1 : How to guide, clean IAC Valve 56k, be patient! BIG PICT

Pictures don't work Try using www.imageshack.us or the Gallery (http://www.toyotanation.com/photos/uploadphoto.php)

Reply 2 : How to guide, clean IAC Valve 56k, be patient! BIG PICT

i think it's ok now ... thanks!

Reply 3 : How to guide, clean IAC Valve 56k, be patient! BIG PICT

ahhhh...you made my t1 lag a sec..... nice pics and a good diy

Reply 4 : How to guide, clean IAC Valve 56k, be patient! BIG PICT

nice!!! i'll have to do this cleaning thing sometime on my 3vz, its beginning to lag in accel... a LOT

Reply 5 : How to guide, clean IAC Valve 56k, be patient! BIG PICT

oooh, how about the 5sfe

Reply 6 : How to guide, clean IAC Valve 56k, be patient! BIG PICT

i don't know about the 5sfe ... and for the 1MZ-FE, the valve is under the intake ... and not on the side ...

Reply 7 : How to guide, clean IAC Valve 56k, be patient! BIG PICT

Reply 8 : How to guide, clean IAC Valve 56k, be patient! BIG PICT

dstlaurent,





Thanks for the write up, I just did this today, so sorry for the Bump!



Hey do you remember which washer went where? I pulled mine apart today and they both came out at the same time, onto the work bench.



I have the flat one and the spring loaded one, not sure if the spring loaded one when on the bearing side or the flat one.



OR if you know where I can find an exploded view. I have a 93 Lexus ES300/Toyota Camry.



Having fun with it RUNNING RICH! I need to put an ECM in it but right now, I'm doing the other low cost maintenance.



Thanks in advance,



dicespice

Reply 9 : How to guide, clean IAC Valve 56k, be patient! BIG PICT

IIRC, the spring washer goes in first, then the flat washer. In other words, the flat washer will be against the bearing. Also make sure your two O-rings are still in place.

Reply 10 : How to guide, clean IAC Valve 56k, be patient! BIG PICT

But I will check for them and see if they are still seated.



Thanks for looking out!