Awesome Kelvin! I just posted about your channel and business on a few huge UZ facebook pages hoping to get you more exposure. You deserve way more viewers with your great content and products. If any car channel deserves hundreds of thousands of viewers, it's this one. Keep them coming mate! I think you should do some test drive videos of your conversions when finished. Because that video of your friends lancer was great! Cheers Kelly
Kelvin, what is the part number to the 3 tiny screws that hold in the IACV to the housing on the first generation Idle Air Control Valve, I lost them whilst at the junkyard. Currently I'm changing my 2nd generation (Non-Rebuildable IACV) to the 1st generation IACV but I happened to drop the bolts on my way out of the yard..
Cool as. My first one had copyright due to the radio playing in the background. Ive got a second video on my list focusing on the later one which is a bit trickier to pull apart. I've done 4 IAC rebuilds this week. Cheers.
@@CartuneNZ awesome mate this vid covers what I needed. hey mate can I ask a question, I've got a leaky power steering idle up valve, I'm wondering if I should just delete the whole thing or try source the two rubber o rings for the valve? it's for my 1990 celsior. Cheers for the videos again these have been so damn helpful to me.
@@dyllan1195 With a stock vehicle I would be replacing the idle up valve. They are much nicer when they are in place. Plenty of other Toyota's run them. On conversions I often delete but ones like a offroad 4x4 with auto I will run them where possible. Older celsior can be lovely cars when well looked after.
Thanks for the new knowledge! I was curious as to how you removed the rubber gasket at 15:00. You mentioned it was glued together from the factory, how would you go about removing it without damaging any components? Thanks in advance!
I have a video on finding part numbers. I think the idle air control hose for the UCF20 is now discontinued but you might be lucky. th-cam.com/video/VRrvWHYqYUc/w-d-xo.html
On that 95lexus sc400 you told me use some epoxy compound on front of hydraulic fan motor solenoid that the plastic rubber came off what I wanted to ask is a lot of sticky oil came out of it am going to have to worry bout that I'm going to seal it up with the epoxy soon thanks
I have an SC400 with the "non-rebuildable" IACV, if I wanted to clean it would I need to disassemble the whole unit or is there a way I can just take the the black cover off the front?
Kelvin, I have a 96 SC400 and I'm wanting to do the coolant bypass. Please tell me, do I remove the pressed tubes on the stepper and if so, how do I seal the holes? Also, is it safe just to run a hose loop from each water Port at the back of the intake? Thanks!
Great info! One of my 1UZ engines sometimes idles low for the first 15 minutes. I cleaned the throttle body and it helped the cold idle but didn't completely fix the warm idle. After the car is driven for half hour its fine though.
@@billygreenhorn9275 Air leaks is a good start. Monitoring the live data can help. If you have large fuel trims then that could mean an air leak. We also see dirty throttle bodies and a build up of oil in the intake. It's not normally a sign of any other issue. Clean and continue. Also checking the AVIS is switching.
Hi Kelvin. Ucf20. What does it mean for the 'unrebuildable' icv when I drill the blind holes and there are no roller pins inside. And the plastic cover is tough as balls to pry off
Hi kelvin can you make a video on idle up valve installation from the intake manifold vacuum hose with a switch from the driver dash were I can flick a switch to raise the idle to warm her up then switch off wen warm.
Hello. Does your vehicle not have a proper idle control system? I prefer to set up correct idle up but doing as you suggested is not hard. I prepared another vehicle recently for such a setup for the winch idle up. Cheers
Using the 2nd part of this video I just pulled apart a JZ/Sealed unit which is apparently non-rebuildable, and what do you know - it comes apart! Myth busted. Thanks for the vid 😊
Kelvin, great vid...my issue is the car got wet (blown stat housing) and then the idle started going crazy, 1000 to 2100 every second like a watch. Just revs up and then goes down, revs up and goes down and its a fast wind up like someone is hitting the gas...IAC rebuild?
I just stubbled upon the difference of these two IAC units. I purchased an early 1UZ that was missing its IAC unit. I found another today but its from a 1995 LS400. It looks like it would bolt right up, are they interchangeable?
@@CartuneNZ I'm getting a little obsessed with your channel. I'm planning on putting an early 1uz in a RA40 Toyota Celica. Currently starting to take it apart. Any advice? The wiring harness is a mess btw 😳
been having some problems with my LS400 attempting to idle at 3000 rpm, and i'm thinking the IAC may be it. i'll need to go source a earlier version cuz this non-rebuildable crap is not good
Depends where you live. If its not too cold then no issue removing the water lines from the IAC. I get the bearings from my cupboard, not sure where you would get yours but I would suggest a shop that sells bearings is a good start. Cheers Kelvin
@jacksonl3686 I keep genuine iac gaskets in stock which I purchase through trade suppliers direct from Japan. I suggest you try your local Toyota or lexus dealer
HI Kelvin - awesome video once again - just a question - on the unrebuildable unit - the gold spiral that unscrews- how do you set it when assembling - is it supposed to screw all the way down or do you have to set it at a certain position? Cheers!
Hello, very useful video! I rebuilt my unit and now the car is seemingly stuck in reset loop. It does the throttle cycling but never stops. What can I do to correct it? Edit: meant to comment this on the IACV reset video
If its wired and the IAC is healthy then the ecu should self reset after a starts and turning the engine off of 10 seconds between restarts. Cheers Kelvin
You did watch the video to see the non rebuildable one get rebuilt though didn't you? It's much better to stick with the correct unit due to the resistance difference between the units however they can be interchanged. Cheers
Hi mate your videos are great and really helpful I've got a issue with my 1uz I just finish fitting headers over summer put everything back together and now it idles at 2200rpm I did the reco on the aicv but still no change have checked all connections and checked for air leaks any ideas mate any help would be appreciated
I would check the TPS is set correctly , ideally using a scan tool to confirm both the throttle plate angle is at 0% and the Idle switch is on although doing it by just setting the idle switch is often ok at a pinch. I'd confirm where the additional air is entering the engine and work from there. Cheers Kelvin
@@CartuneNZ cheers mate got it sorted ended up being a stretched throttle cable from rolling the engine 😆but back on the road and running mint once again thanks for the help
I just inherited a 2001 GS430 that my father bought new he's now diseased he kept records of every oil change every 3000 miles it now has 153000 miles it still runs very good very fast . It has never had the check engine light come on the only problem was the idle which got faster a mechanic he took it to changed the air sensor on the air box where the air filter is located trying to solve the problem he took it to where he bought the car new they said with out a check engine light they couldn't fix it since I started driving it every day to work because of my nissan d21 KA24E breaking down that's a totally different issue anyway the check engine light came on for the first time started watching your channel very interesting I'm a mechanic but on heavy equipment not on motors but on everything else hydraulics and so on . I know the timing belts have never been changed sounds like a slight exhaust leak would appreciate if you could give some tips about those issues I live here in California and the car was purchased here . 3UZ VVT I Lexus GS430 .
Hello Bryan. GS430 are lovely cars. First thing is the check the code as thats indicating an issue. Mechanics need to also learn to read live data and understand it. There is so much more to diagnostics than codes. Exhaust leaks can lead to oxygen sensor faults or poor reading causing running issues too. Its due for its belt change so perfect opportunity to give it some more love an check it over. Cheers Kelvin
In terms of resetting the car once changing the iac like you say. How do you go about doing that ?? Keep up the good work , always watch all your videos
@@CartuneNZ Good morning friend. I'm about to rebuild my IACV and I'm having trouble finding the exact bearings locally. Will any 608 and 6902 work? Thank you.
Hello Ross. I haven't forgotten, just been a bit busy. I have a rebuilt one sitting there of the non rebuilt type. Haha. That sounds funny. Can do. Email me if its needed. Info@thecartunecompany.co.nz
Awesome Kelvin! I just posted about your channel and business on a few huge UZ facebook pages hoping to get you more exposure. You deserve way more viewers with your great content and products. If any car channel deserves hundreds of thousands of viewers, it's this one. Keep them coming mate! I think you should do some test drive videos of your conversions when finished. Because that video of your friends lancer was great! Cheers Kelly
Thanks Kelly. Ill keep doing my thing and making videos. Cheers
Kelvin, what is the part number to the 3 tiny screws that hold in the IACV to the housing on the first generation Idle Air Control Valve, I lost them whilst at the junkyard. Currently I'm changing my 2nd generation (Non-Rebuildable IACV) to the 1st generation IACV but I happened to drop the bolts on my way out of the yard..
I have videos on how to find part numbers. Check one of the videos out. Cheers Kelvin
I've learned so much from your channel. Thaxs alot
legend mate i was just searching for decent videos of this cheers
Cool as. My first one had copyright due to the radio playing in the background. Ive got a second video on my list focusing on the later one which is a bit trickier to pull apart. I've done 4 IAC rebuilds this week. Cheers.
@@CartuneNZ awesome mate this vid covers what I needed. hey mate can I ask a question, I've got a leaky power steering idle up valve, I'm wondering if I should just delete the whole thing or try source the two rubber o rings for the valve? it's for my 1990 celsior. Cheers for the videos again these have been so damn helpful to me.
@@dyllan1195 With a stock vehicle I would be replacing the idle up valve. They are much nicer when they are in place. Plenty of other Toyota's run them. On conversions I often delete but ones like a offroad 4x4 with auto I will run them where possible. Older celsior can be lovely cars when well looked after.
@@CartuneNZ Thanks mate I'll have to see if i can track one down.
Thanks for the new knowledge! I was curious as to how you removed the rubber gasket at 15:00. You mentioned it was glued together from the factory, how would you go about removing it without damaging any components? Thanks in advance!
Would I be able to turn it a couple rotations and install it unplugged and have a permanent idle ?
Thanks heaps for all your awesome videos hope you have a great xmas
Thanks.
Hi Kevin my early 1uz wont idle at all now where do you think i should look first to fix this?
Kevin I’m trying to screw out the bearings but it looks like the big bearing is stuck in the housing. Any suggestions?
does the second unit use the same bearings as the first? I mightve missed it
No, different size bearings between early and later model iac
4:04 is there a part number for that hose or could I replace it with a different 19mm hose
I have a video on finding part numbers. I think the idle air control hose for the UCF20 is now discontinued but you might be lucky. th-cam.com/video/VRrvWHYqYUc/w-d-xo.html
at 2:58 what is that hose cause i can’t find it, is it a vacuum hose?
Its the air supply to the tappet cover. No longer available so we use a piece of universal oil resistant hose.
@@CartuneNZ thank you!!
On that 95lexus sc400 you told me use some epoxy compound on front of hydraulic fan motor solenoid that the plastic rubber came off what I wanted to ask is a lot of sticky oil came out of it am going to have to worry bout that I'm going to seal it up with the epoxy soon thanks
Are these stepper motors the same in the egr and iac systems?
I have an SC400 with the "non-rebuildable" IACV, if I wanted to clean it would I need to disassemble the whole unit or is there a way I can just take the the black cover off the front?
sure is. Pop the roll pin and the black piece comes out. Cheers Kelvin
Kelvin, I have a 96 SC400 and I'm wanting to do the coolant bypass. Please tell me, do I remove the pressed tubes on the stepper and if so, how do I seal the holes? Also, is it safe just to run a hose loop from each water Port at the back of the intake? Thanks!
Great info! One of my 1UZ engines sometimes idles low for the first 15 minutes. I cleaned the throttle body and it helped the cold idle but didn't completely fix the warm idle. After the car is driven for half hour its fine though.
conversion or stock vehicle? Have you checked the wiring is correct as per my biggest wiring mistake video?
conversion or stock vehicle? Have you checked the wiring is correct as per my biggest wiring mistake video?
Its a stock 1998 Lexus GS400 1UZ VVT. I think I need to check for air leaks, the hoses are all hard.
@@billygreenhorn9275 Air leaks is a good start. Monitoring the live data can help. If you have large fuel trims then that could mean an air leak. We also see dirty throttle bodies and a build up of oil in the intake. It's not normally a sign of any other issue. Clean and continue. Also checking the AVIS is switching.
Are the two versions interchangeable? I've got a 96 1UZ-FE and wondering if I can go to the easily rebuild able one?
Yes, they interchange however the inlet hoses are different sized between the two units which needs to be resolved to swap them. Cheers Kelvin
What is the part number for the bearing for the rebuildable one ?
Thanks!
did you not watch the damn video loo
Anyone knows how to wire the isc to use it with a standalone ecu?
Yes, easy to do with a suitable aftermarket ecu. I provide the information free to my customers when they purchase their ecu from me. Cheers Kelvin
Hi Kelvin. Ucf20. What does it mean for the 'unrebuildable' icv when I drill the blind holes and there are no roller pins inside. And the plastic cover is tough as balls to pry off
I'd suggest you might be doing something wrong as they always have roll pins.
Hi kelvin can you make a video on idle up valve installation from the intake manifold vacuum hose with a switch from the driver dash were I can flick a switch to raise the idle to warm her up then switch off wen warm.
Hello. Does your vehicle not have a proper idle control system? I prefer to set up correct idle up but doing as you suggested is not hard. I prepared another vehicle recently for such a setup for the winch idle up. Cheers
I'll be back at my car tomorrow sorting out the gremlins. The start and turn off 3times ect then warm up. I haven't tried so that's good advice thanks
Is it a conversion or is the engine still in its correct body?
Is the engine in a conversion or in the original body?
Anyone know the size bearings he used for the later model IAC, the small bearings
6801 and 689 with plastic seals. Oem is Koyo
Using the 2nd part of this video I just pulled apart a JZ/Sealed unit which is apparently non-rebuildable, and what do you know - it comes apart! Myth busted. Thanks for the vid 😊
Well done. Do guys in the jz community say that their iac cant be rebuilt too?
@@CartuneNZ correct, that's all I ever heard!
@@ndh8445 the uz crowd were like that until I made this video. Hopefully the jz guys can learn from your repair too.
hi kelvin, i have a 93 ls400 that is idling very high, around 2500 and and the car warms up the idle rpm continues to increase. where should i start?
Id start by finding where the extra air is getting into the engine, most likely by clamping the iac tube.
Are they the same size bearings?
Can I use the early IACV on the newer engine, I know I would have to change the pipe size to the smaller
I often do without an issue. Cheers Kelvin
Awesome 👍
Can you tell me what the bearing sizes are on the UCF20, I cant find a IACV around so I'm looking to rebuild it, Thanks in advance
6801 and 689 with plastic seals. Oem is Koyo
Kelvin, great vid...my issue is the car got wet (blown stat housing) and then the idle started going crazy, 1000 to 2100 every second like a watch. Just revs up and then goes down, revs up and goes down and its a fast wind up like someone is hitting the gas...IAC rebuild?
You are awesome mate! Thanks for the tip on rebuilding the later model iacv on the ls400. Would you happen to have the bearing numbers to rebuild it?
6801 and 689 with plastic seals. Oem is Koyo
I just stubbled upon the difference of these two IAC units. I purchased an early 1UZ that was missing its IAC unit. I found another today but its from a 1995 LS400. It looks like it would bolt right up, are they interchangeable?
yes , only difference in fitment is the size of the inlet pipe. Cheers Kelvin
@@CartuneNZ I'm getting a little obsessed with your channel. I'm planning on putting an early 1uz in a RA40 Toyota Celica. Currently starting to take it apart. Any advice? The wiring harness is a mess btw 😳
@@stevencorrales2683 watch lots of videos for pulling it apart. Loom I have instructions, plug kits and lots of videos. Cheers Kelvin
Did I read correctly that you can build a harness?
Are the bearings used ( 608llu and 6902llu )for both the early and later (non rebuildable) idle control valves?
Hello. The later units have a smaller bearing fitted. Cheers Kelvin
CartuneNZ hi Kelvin, can you provide the part numbers for the smaller bearings?
@@Jay351 6801 and 689 with plastic seals. Oem is Koyo
@@bradmcdarma671 thank you!
been having some problems with my LS400 attempting to idle at 3000 rpm, and i'm thinking the IAC may be it. i'll need to go source a earlier version cuz this non-rebuildable crap is not good
You do realize that all of the iac can be rebuilt? As I show in the video?
@@CartuneNZ I don't have the expertise to rebuild the later version but the earlier one seems like no trouble.
Hey Kelvin, is it bad to remove the cooling lines to the IAC on a rebuildable model? Also, where would I get a replacement bearing set for it?
Depends where you live. If its not too cold then no issue removing the water lines from the IAC. I get the bearings from my cupboard, not sure where you would get yours but I would suggest a shop that sells bearings is a good start. Cheers Kelvin
Good info, are the rebuildable iacs, swappable with the non rebuildable?
Just a not, both are rebuildable, and yes interchange provided the difference in inlet tube size is addressed
@@CartuneNZ good to know thank you, just a side question do you know where I can get the iac gasket? Mines completely fallen apart. Thanks mate
@jacksonl3686 I keep genuine iac gaskets in stock which I purchase through trade suppliers direct from Japan. I suggest you try your local Toyota or lexus dealer
HI Kelvin - awesome video once again - just a question - on the unrebuildable unit - the gold spiral that unscrews- how do you set it when assembling - is it supposed to screw all the way down or do you have to set it at a certain position? Cheers!
excellent , would be awesome to meet you, have a pint and chat awhile, cheers
Hello, very useful video! I rebuilt my unit and now the car is seemingly stuck in reset loop. It does the throttle cycling but never stops. What can I do to correct it?
Edit: meant to comment this on the IACV reset video
If its wired and the IAC is healthy then the ecu should self reset after a starts and turning the engine off of 10 seconds between restarts. Cheers Kelvin
Are these two IACs interchangeable?
Yes, however the inlet pipe is a different size
Can an early valve be swapped with a non rebuildable one?
You did watch the video to see the non rebuildable one get rebuilt though didn't you? It's much better to stick with the correct unit due to the resistance difference between the units however they can be interchanged. Cheers
CartuneNZ yes I watched it. I was just wondering because the gen 2 1uz I bought didn't come stepper motor and found a rebuildable one
@@rylan7114 Got it. Yep should be fine. I really should try to call them early and late , or screw and roll pin type shouldn't I. Cheers
Hi mate your videos are great and really helpful I've got a issue with my 1uz I just finish fitting headers over summer put everything back together and now it idles at 2200rpm I did the reco on the aicv but still no change have checked all connections and checked for air leaks any ideas mate any help would be appreciated
I would check the TPS is set correctly , ideally using a scan tool to confirm both the throttle plate angle is at 0% and the Idle switch is on although doing it by just setting the idle switch is often ok at a pinch. I'd confirm where the additional air is entering the engine and work from there. Cheers Kelvin
@@CartuneNZ cheers mate got it sorted ended up being a stretched throttle cable from rolling the engine 😆but back on the road and running mint once again thanks for the help
I cut between 70 and 80 in the machine, cleaned the stroke, and changed my face and wires
ok
Hwzit Kelvin
Do you wind it down when putting it back together or sticking out
About the middle is fine. Then do a reset on start up. Cheers
Ok thanx and how much do you sell for
Oh and a rubber piece also go with the little washer??? Or dont need to
Thanx Kelvin big help no need for another 1 and by the way its Naime Rlisk via fb also thanx for the p/s pump last year working mint
YOU ARE DOING A GREAT JOB. I HAVE LEARNT A LOT FROM YOU THANKS. JUST ONE QUESTION CAN YOU STILL BUY THE PARTS FROM TOYOTA
Hello. I dont know as I never buy new IAC. I rebuild most of them fine. The bearings inside can not be purchased from toyota. Cheers Kelvin
At the start of the 10:00 mark, you aren’t focused on the object anymore
Correct, nearly everything I do is first take or bust, so I edit what I have.
I just inherited a 2001 GS430 that my father bought new he's now diseased he kept records of every oil change every 3000 miles it now has 153000 miles it still runs very good very fast .
It has never had the check engine light come on the only problem was the idle which got faster a mechanic he took it to changed the air sensor on the air box where the air filter is located trying to solve the problem he took it to where he bought the car new they said with out a check engine light they couldn't fix it since I started driving it every day to work because of my nissan d21 KA24E breaking down that's a totally different issue anyway the check engine light came on for the first time started watching your channel very interesting I'm a mechanic but on heavy equipment not on motors but on everything else hydraulics and so on .
I know the timing belts have never been changed sounds like a slight exhaust leak would appreciate if you could give some tips about those issues I live here in California and the car was purchased here . 3UZ VVT I
Lexus GS430 .
Hello Bryan. GS430 are lovely cars. First thing is the check the code as thats indicating an issue. Mechanics need to also learn to read live data and understand it. There is so much more to diagnostics than codes. Exhaust leaks can lead to oxygen sensor faults or poor reading causing running issues too. Its due for its belt change so perfect opportunity to give it some more love an check it over. Cheers Kelvin
In terms of resetting the car once changing the iac like you say. How do you go about doing that ??
Keep up the good work , always watch all your videos
To reset start the engine, and then turn off the key for 10 seconds and do again until the idle settles. Cheers Kelvin
Legend cheers mate
Kelvin. Could you provide us with the part numbers of the bearings for the later smaller unrebuildable units? Thanks
Good morning. Sure thing . 608 (NTN bearing number 608LLUC3/5K) and 6902(NTN Bearing number 6902LLU/5K) Cheers Kelvin
@@CartuneNZ Good morning friend. I'm about to rebuild my IACV and I'm having trouble finding the exact bearings locally. Will any 608 and 6902 work? Thank you.
Do you want to sell me a non rebuild able one? Postage to Australia?
I want a spare before I try and rip into it
Hello Ross. I haven't forgotten, just been a bit busy. I have a rebuilt one sitting there of the non rebuilt type. Haha. That sounds funny. Can do. Email me if its needed. Info@thecartunecompany.co.nz
@@CartuneNZ awesome mate thanks so much for that
@@CartuneNZ email sent