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Lexus LS400 , Ls430 and Toyota Celsior Powersteer idle up valve ( IACV ) replacement. How to.

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We explain the operation of the Power Steer idle up valve and show how to change it on a Lexus LS400 or a Toyota Celsior with a 1uz Toyota V8 engine. The valve part number I use is 17630-16040
The Cartune Company (2003) Ltd in New Zealand does 1uz and 3uz conversions / parts and wiring. We have been working on UZ Toyota V8 engines since 2004 when we did our own Hiace van to transport dirtbikes around NZ. Since then we have swapped to doing mainly just Lexus V8 work from a family owned farm hidden away in our paradise , surrounded by the NZ native bush. We sell parts and simple to follow wiring instructions for the 1uzfe engines. For enquiries email info@thecartunecompany.co.nz Take Care. Kelvin

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20 авг 2024

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Комментарии : 79

@nickmcgarvey6463 3 года назад

Professional Kiwi UZ Wizard opinion on electric power steering? My 1992 SC400 had the hydro pump that leaked onto and killed the alternator.

@CartuneNZ 3 года назад

I think in stock vehicles its far easier to repair the nearly 30 year old pump which has possibly never been apart and it will give many ore years of service than to stuff around reinventing the wheel.

@nickmcgarvey6463 3 года назад

@@CartuneNZ Thanks. I'm thinking for swap purposes in a place a UZ was never intended to be and power steering didn't previously exist but generally I'd agree about not reinventing the wheel. Even though I guess engine swapping pretty mush is exactly that haha.

@billygreenhorn9275 3 года назад

Always a pleasure Kelvin.

@CartuneNZ 3 года назад

Thanks Billy. This video is a topic thats discussed lots

@timgrenski4781 3 года назад

On my '94 the switch was deleted by the previous owner. He said he "did it right" .... Would there be a noticeable difference if I were to reinstall a new one?

@CartuneNZ 3 года назад

Anyone who is in tune with their car will notice a difference.

@Rudy2JZ 3 года назад

LOL I took my ls400 to the shop yesterday to get this valve replaced

@CartuneNZ 3 года назад

Perfect timing for a video.

@bvward 3 года назад

As always, informative tech!

@CartuneNZ 3 года назад

Thanks.

@55Rumble 3 года назад

Top job Kelvin! I'm about to rebuild my pump too and it definitely needs the valve!

@CartuneNZ 3 года назад

Good idea. I much prefer to keep it where I can, especially on the auto swaps.

@xfatesnipes2041 5 дней назад

Hey kelvin I’m having issues with a crank no start on a 2000 ls400 body with 1998 Engine harness and ecu. I programmed it and made a the fob now I’m just crank no start with a b1261 body code

@joeteejoetee Месяц назад

SAGE advice from an experienced EXPERT: "You've gotta be good with your fingers, in places you can't see." 😎

@drrock5356 5 месяцев назад

G'day Kelvin! My steering wheel has always been heavy, and it doesn't return to center through a turn. I just replaced the PS pump with a brand new Toyota pump, and also replaced the lines, after flushing the rack good. Steering is still heavy and no wheel return through a turn. Could it be that the rack needs rebuilding? No weeping from her yet; no noises. Many Thanks!

@AbdulRahim-es6dc 6 месяцев назад

Is this the same for 1998 LS400?

@daticharqseliani9770 6 месяцев назад

Hello. Can you tell me what this vacuum has to do with the hydraulic pump? Can this part be canceled?thanks😊

@linconfalcao6322 11 месяцев назад

Congratulations my friend! What is the function of this valve? How does it work? Is it to speed up the engine or soften the steering?

@Gonzoe714 11 месяцев назад

What grade oil do you use for your f20

@CartuneNZ 11 месяцев назад

As this is a video on a powersteer repair, and you haven't said which oil I'll give the powersteer oil I use, which is often atf fluid, dextron 3 or type 4 or if the vehicle gets a hard time I use penrite power steer fluid. Cheers Kelvin

@Graemecns Год назад

Hi Kelvin my car has a bullet super charger with intercooler and a Wolf ECU i was thinking I should just do an Idle up valve delete what is your suggestion? you mention you just place a ballbearing under the valve what size is the ball bearing? my car s an hour drive away.

@Graemecns Год назад

Hi kelvin I have just pulled my car down to the intake manifolds chasing oil puffing in exhaust. Found red oil under supercharger intecooler. Your video may have saved me an engine rebuild. As I have also been having powersteering low oil and airating issues. Just had p/steering pump rebuilt.

@ishsiriram8286 Год назад

Thanks Kelvin, Awesome video, very helpful. I repaired one of the nozzles on my valve. will change it out soon. Thank you for sharing.

@CartuneNZ Год назад

Glad it helped

@JP-uu2rw Год назад

Not sure what I did wrong. I installed the air valve using no sealant and it leaks. Is it possible the there is a seal internally that is damaged in the pump itself? The old one was sweating oil at the threads

@CartuneNZ Год назад

There is a little brass seat in the powersteer pump which the valve seals on. Maybe that brass seat is damaged. Cheers Kelvin

@Ghost-Of-Kyiv- Год назад

My cap popped off from the bolt when changing a hose , should I stick it back on there with epoxy?

@CartuneNZ Год назад

I'd be fitting a new one if I had that issue. Cheers Kelvin

@uuuisabeoch3946 Год назад

Any idea why a Lexus sc400 would idle fine when cold but when it gets up to temp it drops a little below 500-400rpm?!

@CartuneNZ Год назад

Could be an ecu issue, tuning issue, air leaks, IAC function, sensor fault etc etc. I would recommend doing some testing to identify the issue. Cheers Kelvin

@victorrobles7499 Год назад

i have a 1997 celsior, would a 1997 ls400 power steering pump fit the celsior?

@CartuneNZ Год назад

Yes, They are the same pump and if you check toyodiy for the cross reference you will find they are the same part number. Cheers Kelvin

@acrane83 Год назад

U r awesome

@ismael9293 2 года назад

Thanks for the tutorial. I went searching for those o-rings on the plunger but am not finding them at the Lexus dealer. Would you happen to have a part number you could provide?

@CartuneNZ 2 года назад

There are no psrt numbers at the dealership as dealership only supply the complete valve assembly. For o-rings its a trip to an o-ring supplier.

@RUCKDOCKA45 2 года назад

Hey bro my LS400 think it’s a 1990 it’s reving high and not dropping what could it be, also can smell fuel, no leaks anywhere it’s like the choke is jammed on. Used to rev high but then when warm comes back down to normal now it just stays high, what could it be 🤦🏽‍♂️🤦🏽‍♂️choice one bro👍

@CartuneNZ 2 года назад

Id recommend checking live data in ecu to confirm ecu is seeing correct engine temp, tps with both main tps and idle switch and other inputs are correct. Could be a few things so testing is the best way forward

@cv5430 2 года назад

So your saying blue smokes may also come out when this value is bad? Because before installing power steering pump it would smoke blue on start ups and disappear now that we broke that value while installing pump it smokes white like a train and blue as well. Is that why?

@CartuneNZ 2 года назад

Id recommend starting by fitting a new valve, and checking the pcv system too.

@marvinkidd6963 2 года назад

Where do you recommend getting the pumps from

@CartuneNZ 2 года назад

We generally rebuild then over here in NZ

@mikejon3062 2 года назад

Hi mate where can I get a powersteering velve from. I asked Toyota in newplymouth and there is none in the country for two weeks but said will cost $342 . I'm sure they are not that dare lol

@CartuneNZ 2 года назад

I have them in stock.

@mikejon3062 2 года назад

@@CartuneNZ how much please

@CartuneNZ 2 года назад

$150 in stock plus freight. Email info@thecartunecompany.co.nz

@manojkara2688 2 года назад

Does it matter which hose is connected to which port on the valve?

@CartuneNZ 2 года назад

No. Either way is fine.

@RolandElliottFirstG 2 года назад

Nice and easy on a normal one , but when you have a Soarer UZZ 32 its a real struggle.

@CartuneNZ 2 года назад

UZZ32 are very rare. I was surprized recently by the local toyota dealer asking me for info as they couldnt find parts , they didnt even know about the UZZ32 being different , and I had an engine turn up on the back of a ute , again a UZZ32 engine.

@RolandElliottFirstG 2 года назад

@@CartuneNZ there are 2 UZZ 32's in NZ, In Australia there are about 20, i have a couple of them, and yes no parts available now for the Suspension etc. Only 851 were ever made by Toyota, there are about 200 left world wide in running condition.

@CartuneNZ 2 года назад

Well that means I've been involved with both of the nz ones, and I've seen a few engines out of dismantles ones. I have a mate with an engine in the uk too.

@RolandElliottFirstG 2 года назад

@@CartuneNZ That may be Mike, he has one and transplanted a 3UZ into it.

@CartuneNZ 2 года назад

Yep, Mike and the one at the dealership

@ronaldtodd5098 2 года назад

wow you saved my bacon I just discovered the black plastic housing on mine detached from the cup bolt looking thing screwed in the PS pump,,I was holding thos two vacuum lines with the black plastic attached looking confused as to what it was after doing a 5 day starter replacement job...I am not a mechanic

@CartuneNZ 2 года назад

Glad to help. Cheers Kelvin

@1thegrimreefer1 2 года назад

thanks for putting up these videos , lots of good Information thanks. can i ask you please what do you do in the case of a 1uz with a link g4 . can you use an electrical switch or something instead of this factory valve ? or can you remove this system is it necessary for a street car ? I'm doing a conversion now that this is a question mark on the list currently , not sure what way to go

@CartuneNZ 2 года назад

If its manual, with link ecu I normally delete this idle up and with correct settings for the iac with a well tuned engine the ecu will compensate fast enough. If I'm running something with massive tyres where we also want very low idle speed we would fit a electrical switch and feed this to the ecu and adjust the power steer idle up setting in the link.

@1thegrimreefer1 2 года назад

@@CartuneNZ Kelvin , thank you very much this is what I needed to know. yes its manual and I don't think the tires are what you'd call too large. but its a nice and light car so that should help somewhat : ) but I do like the idea of electrical switch, I think I have not used up all the inputs yet. . do you have a particular switch that you like to use when doing conversions ?

@CartuneNZ 2 года назад

For a switch I look to some other models of toyota have a switch which screws in as a direct replacement for the stock air bleed valve. I think I have one laying around to check a part number off it.

@qazisajid9119 2 года назад

What is the use of this valve and what is the importance also the work of this valve need ur guidance

@CartuneNZ 2 года назад

Its a idle up valve for the powersteer so when the powersteer is operating the idle is increased slightly. I think its quite important for stock vehicles and swaps with autos.

@gang6009 Год назад

@@CartuneNZ couldn't you just delete and Rev yourself? I'm afraid this thing is just gonna leak again I know how to block it off, just don't know what consequences come with it

@joshriver75 Год назад

@@gang6009 400-500rpm low idle. jumpy take offs. If it were me i would just bite the bullet and replace it if you want your car to operate smoothly.

@carlosguerra283 3 года назад

I noticed a leak coming from that part, i replaced it, do you think i should replace the power steering pump/reservoir?

@CartuneNZ 3 года назад

I never replace reservoir unless they are damaged. I do rebuild lots of PS pumps , which I prefer to replacement. cheers Kelvin

@TheTimaus 3 года назад

Great video! What is the ball bearing size you using to put in a valve to block ATF from going through?

@heinrichbornman6290 2 года назад

Did you managed to find the answer for I am also about to blank mine off and would like to know the size of the bearing?

@gahbah274 3 года назад

Thanks for this! Mine is snapped off on my JDM motor. Lexus wants $135USD for this little plastic valve! Exorbitant considering the pump costs about the same! The local Toyota dealer wants $113!

@CartuneNZ 3 года назад

Glad to help. Cheers Kelvin

@system2775 3 года назад

Is this the correct part number for a SC400 1995? parts website say this wont fit my car

@CartuneNZ 3 года назад

I use Toyodiy.com and lists fine. I believe his part fits all 1uz engines which have this valve and heaps of other Toyota models. There are other part numbers for this same valve. Cheers Kelvin

@nct9466 3 года назад

I saw my legs walking away lol!

@CartuneNZ 3 года назад

I almost left the scooter repair in the background too.

@nct9466 3 года назад

@@CartuneNZ na that would distract from the video, such a sexy scooter! My sexy legs was enough to hype ppl up ;)

@jaylockwood8417 3 года назад

Your the best!

@CartuneNZ 3 года назад

Thanks. Cheers Kelvin

@felixreward5187 3 года назад

I replaced my power steering pump on a ls400 98 model, but I didn't include the air hose.. Would it cause any damage with time ? Please I need your advice

@CartuneNZ 3 года назад

If the hoses are in good order then no issue. Cheers Kelvin