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Nissan Gtr High Idle And Throttle Body Fix

GTRPSI

By GTRPSI,
in Tutorials / DIY / FAQ

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xfixiate Rising Star

xfixiate

Posted
Posted

CRC Carbie Cleaner removes the TOMEI Throttle Coat pretty well.

Tried using it to soften, not sure it will leave the surface OK.

Took a lot of scrubbing to get the throttles completely closing.

Any suggestions/recommendations on how to apply the throttle coat CORRECTLY would be greatly appreciated. The brush in the can is too big.

xfixiate Rising Star

xfixiate

Posted
Posted

TOMEI replies to my query: Looks like clean adn try again. Im going to use a small paintbrush than the one supplied in the can. Too hard to control.

Note also that you close it to let it dry.

On 22 November 2012 20:00, Tomei Powered USA <[email protected]> wrote:

Dear John,

It sounds like you've used too much.

Depending on how you have applied it, might be best to remove it and start

again.

You only need to apply it on the edges, where the shaft makes contact with

the wall. Then on the butterfly rim edge itself, where it touches the wall,

the outer part mainly.

Go to the bottom of this page to see examples

http://www.tomei-p.co.jp/_2003web-catalogue/e193_others_gauge.html

to remove it, you can use paint thinner or acetone solution (or similar).

xfixiate Rising Star

xfixiate

Posted
Posted

I used an artist paintbrush rather than the one in the can, much easier to be precise. Throttles seal and they are now on the bump stop.

not as neat as i would like but seems to be doing the job.

MORALE: DONT CLEAN THROTTLE BODY, EVER :3some:

SiR_RB Grand Master

SiR_RB

Posted
Posted

I used the brush supplied and held the butterfly's opens while they dried

Once installed the accelerator was very not by but after afew days of driving it "wore in" and is now smooth as silk

Not to mention a perfect stable idle :)

Goodluck

Booki Rising Star

Booki

Posted
Posted

Where are you fellas getting the Tomei Throttle seal from?

Quick look on eBay/google yielded no results for aussie sellers...

That said i just cleaned my throttle bodies while doing my head gasket...doh >_<

gtr jet Veteran

gtr jet

Posted
Posted

Will cleaning the throttles affect anything else besides idle? I cleaned mine a couple of years ago when I built my motor as I thought it was carbon build up and now my car idles at 2000rpm. That doesn't really bother me though.

xfixiate Rising Star

xfixiate

Posted
Posted

Did you clean and redo the AAC valve? There is an idle adjustment screw there, plus the rebuild procedure which will also help get the idle right. I have heard of similar high idles with cleaned throttles.

If i were you I'd take the plenum off, do the throttle body goo repair, recondition the AAC valve and replace the gaskets.

If you think you have a vauumc leak, spray "Start yer Bastard" around the usual suspects. if the idle goes up, you found the leak.

If you used paper (or old) gaskets around the throttle bodies, I'd start there first.....

gtr jet Veteran

gtr jet

Posted
Posted

The engine has just been built again by a mate this time though so i'm not too sure if he's touched the aac valve. The plenum is off atm so I can replace some heater hoses so I might just have to get some of that goo for the throttle bodies.

Gaskets are new metal ones.

  • 1 year later...
  • 1 month later...
  • 6 months later...
tommis85 Mentor

tommis85

Posted
Posted

Hi,

I've giving my throttle bodies a good scrubbing too :P I shall be re-sealing and re-setting the throttle bodies as per the steps outlined above.

However, I do have a question....what do you guys do about the sealing around the butterfly shaft / spindle itself? I take it you just try to get either some moly grease into the tiny gap or a bit of the RTV silicon to cut down the gap in there?

Thanks!

Tom

  • 3 months later...
  • 5 months later...
  • 2 months later...
sic33r Enthusiast

sic33r

Posted
Posted

I had to do take the throttle bodies off twice as I done the cleaning with the carry cleaner and it made the idle worse, second time around I use tomei throttle coat and it worked a treat. Will send anywhere in Australia if somebody wants to buy

It off send me a msg 0447772496

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