Geo Posted February 27, 2010 Share Posted February 27, 2010 (edited) So I have been having a few issue's with Idling, car dying when started, erratic idle, low idle, high idle (I am getting high idle and car dying after initial start up, I have to feather the throttle to get round it). So i thought about starting to track the problem down. I spoke with a few people and the conclusion was that it was probably a sticky ICV. So here is a small tutorial on how to remove and clean it on a TT(Single Turbo) Tools Needed: Carb Cleaner Philips Screw Driver Flat head Screw Driver 12mm Socket, with extension and ratchet Long Nose Pliers Swear Tin Plasters Location of ICV So first off was to take off the plug connector, kinda fiddly as its been on for 15 years, take care pulling it off. Next take this pipe off by unclipping it and pulling off, this gives you more room to play with. Nex step is to take off the coolant hose or small K&N filter that I have got since im running a Single Turbo. This will expose a nice shiney metal pipe. Seen here by the red pipe. Next remove the 2x12mm bolts that hold it onto the throttle body, with the rachet, just be careful you dont drop them like i did, took me ages to find the thing. There is also a metal washer the shape of the unit DON'T DROP THIS. you then can pull the ICV up for some leverage to expose the 2 small coolant pipes. These have little clips on them that are very fiddly, just have patience and use the long nose pliers to get them off. HAVE FUN HERE!! took me a while. Next unscrew the philips screws, one Idle Control Valve split in two Use the carb cleaner to clean everything out so that all the crap runs out. Use a soft cloth/rag to clean the actuator (the small black nipple with spring in it). Leave to dry for about an hour. Then re-install after its all done by going back through this in reverse. If it doesn't help your idling problem then its a new one required. Before cleaning After cleaning P.s dont clean it in the kitchen like i did, the bird wasn't happy! O Well!!! Supra's Rule. Hope this helps Guys. Edited March 5, 2010 by Steve (see edit history) Quote Link to comment Share on other sites More sharing options...
PhatB Posted February 27, 2010 Share Posted February 27, 2010 Cheers for that... Was planning on cleaning mine tomorrow as the car has been sat idle for 4 months Quote Link to comment Share on other sites More sharing options...
miko_supra Posted February 27, 2010 Share Posted February 27, 2010 Very helpful! I cleaned mine up too not so long ago. I found the two small screws a small nightmare to get out. Quote Link to comment Share on other sites More sharing options...
Homer Posted February 28, 2010 Share Posted February 28, 2010 Thanks for taking the time Geo, added to tech reference Quote Link to comment Share on other sites More sharing options...
pezzler Posted June 26, 2010 Share Posted June 26, 2010 (edited) Good write up with helpful pics Going to be giving this a go tomorrow Edited June 29, 2010 by pezzler (see edit history) Quote Link to comment Share on other sites More sharing options...
Foxbuster Posted July 3, 2010 Share Posted July 3, 2010 I used this FAQ, nothing about the high idle happened... After I adjusted the idle, now everything seems back to normal... Quote Link to comment Share on other sites More sharing options...
James Posted August 31, 2010 Share Posted August 31, 2010 Good write up big man I have a "cyclic" sounding idle, it just seems to go slightly up and down constantly. Guessing that cleaning this would do the trick? Quote Link to comment Share on other sites More sharing options...
Geo Posted August 31, 2010 Author Share Posted August 31, 2010 Good write up big man I have a "cyclic" sounding idle, it just seems to go slightly up and down constantly. Guessing that cleaning this would do the trick? might just be hunting so to speak dude, yeah a good clean might do the trick yeah. Quote Link to comment Share on other sites More sharing options...
James Posted August 31, 2010 Share Posted August 31, 2010 Cool I'll give it a bash and see what happens Quote Link to comment Share on other sites More sharing options...
Andy Blyth Posted August 31, 2010 Share Posted August 31, 2010 To get the valve apart, I found that water pump pliers had a much better grip on the two small screws than any screwdriver I had. Quote Link to comment Share on other sites More sharing options...
Dyer864 Posted September 3, 2010 Share Posted September 3, 2010 Mine's been playing up a while now, and it's gone erratic again 2day, but i have a na ! anyone av any pics where this is situated in the engine bay . Quote Link to comment Share on other sites More sharing options...
DaveR Posted June 1, 2011 Share Posted June 1, 2011 What a fantastic guide! The idle on my car has been playing up for a few days (too high, ~12-1400rpm and erratic), so with the joys of the search button I found this guide. I've got to say, the inside of my IACV wasn't anywhere near as dirty as I thought it would be, making me believe that I was barking up the wrong tree. I cleaned it anyway, figuring "why not?" and lo and behold the idle is now back to normal. Again, brilliant guide and the photos are really helpful. AND I didn't drop the bolts - bonus! Thanks, Geo. Quote Link to comment Share on other sites More sharing options...
supraGZaerotop Posted July 28, 2011 Share Posted July 28, 2011 how much is a new part? Quote Link to comment Share on other sites More sharing options...
supraGZaerotop Posted August 25, 2011 Share Posted August 25, 2011 anyone know how much this part is brand new from mr T Quote Link to comment Share on other sites More sharing options...
Colin-mkiv Posted June 20, 2012 Share Posted June 20, 2012 ten squazzillion dollars....give or take....anyone know how much this part is brand new from mr T Quote Link to comment Share on other sites More sharing options...
a98pmalcolm Posted June 20, 2012 Share Posted June 20, 2012 (edited) The £550ish. I need a new one but I will not pay that!! Even the guy at Toyota was like "ermm thats expensive" I'm going to take mine off again an see what I can do... Its so so annoying when it plays up.. There's just no idle, I have to throttle - brake - throttle - brake etc.. Just to stop for some lights.. Edited June 20, 2012 by a98pmalcolm (see edit history) Quote Link to comment Share on other sites More sharing options...
Geo Posted June 20, 2012 Author Share Posted June 20, 2012 can you not get a 2nd hand one from Keron? Quote Link to comment Share on other sites More sharing options...
a98pmalcolm Posted June 21, 2012 Share Posted June 21, 2012 Keron only has NA ones. A member has PM'ed me so might be getting it of him.. Quote Link to comment Share on other sites More sharing options...
Guest rom/noodle Posted June 29, 2012 Share Posted June 29, 2012 Keron only has NA ones. A member has PM'ed me so might be getting it of him.. Hello I am new member here I drive a NA also. Just wanted to say thanks for the write up. Better to clean this unit first. Just to purchase it is one expensive part. I called up a Toyota Parts service department and they would have to order it. Price was $600 Quote Link to comment Share on other sites More sharing options...
Guest MidLifeCrisis Posted July 25, 2012 Share Posted July 25, 2012 Hi Guys, am about to pull off the ICV for a clean out (thanks for the "how to") How much coolant is lost when pulling off the coolant lines? ie do you have to drain the radiator first? Thanks and regards Simon Quote Link to comment Share on other sites More sharing options...
Geo Posted July 25, 2012 Author Share Posted July 25, 2012 Hi Guys, am about to pull off the ICV for a clean out (thanks for the "how to") How much coolant is lost when pulling off the coolant lines? ie do you have to drain the radiator first? Thanks and regards Simon There is no coolant loss buddy, just follow the guide and clean it. Job Done. Quote Link to comment Share on other sites More sharing options...
Guest MidLifeCrisis Posted July 25, 2012 Share Posted July 25, 2012 thanks mate, will give it a go tonight. Quote Link to comment Share on other sites More sharing options...
2jz.jjk Posted November 30, 2012 Share Posted November 30, 2012 hey guys, i'm trying to give this a go but i cant seem to get the two phillip head screws off i tried using wd-40 just to loosen it doesnt work. feels like its glued on. not to sure what to do now, any advice? STUCK AT THIS STEP, Next unscrew the philips screws, one Idle Control Valve split in two Quote Link to comment Share on other sites More sharing options...
Gambit Posted February 23, 2013 Share Posted February 23, 2013 I just did this and the hardest part would easily have been the two screws, if it hadn't been for post #10 Use water pump pliers. Well done Andy! Quote Link to comment Share on other sites More sharing options...
Angarak Posted March 5, 2016 Share Posted March 5, 2016 (edited) Should you clean the check valve in the intake manifold with some carb cleaner also? Edited March 6, 2016 by Angarak Answered my own question (see edit history) Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.