Jump to content
SAU Community

Recommended Posts

Hi guys,

Ive recently bought a R33 and am having an issue with it. While in neutral, just standing still, the cars throttle hunts (if that makes sense). The revs rise and fall, sometimes a really small amount, sometimes rises to 1500 and then drops to pretty much 0 where it feels like the engines gonna turn off.

Car is a manual, completely stock as far as I know.

The mechanic said lots of R33's have this problem so thought id have a go to see what peoples opinions are.

Link to comment
https://www.sau.com.au/forums/topic/449862-idle-engine-hunting/
Share on other sites

Clean out the iac. Search for a guide or whatever. Or ask your mechanic why he didn't just tell you the reason.

Will try to have a look.

The mechanic told me about it when I got it inspected, he said they will try to clean the throttle body and then see if they need to replace parts.

People on here usually seem to know exactly whats wrong so I thought id ask.

Don't clean the throttle body. That's not the problem.

Hopefully that's just lost in translation and your mechanic actually knosw what he is doing.

Didnt think it would be hence asking people who really know :)

This is what benC34 is referring to I think http://www.sau.com.au/forums/topic/110431-diy-aac-valve-cleaning-idle-reset/ easy diy job

Thanks :).

I have bookmarked this page already, just waiting for a day when I have a bit of time to do it, tried to drive today with the Air-con on and the car stalled everytime I stopped cause the revs dropped...need to do this asap.

Thanks :).

I have bookmarked this page already, just waiting for a day when I have a bit of time to do it, tried to drive today with the Air-con on and the car stalled everytime I stopped cause the revs dropped...need to do this asap.

Definitely the iac! Scrap the mechanic and attempt to clean it yourself, a quick way to test this theory - spray some carby cleaner into one of the hoses attached to the iac and see if it temporarily fixes your issue.

Definitely the iac! Scrap the mechanic and attempt to clean it yourself, a quick way to test this theory - spray some carby cleaner into one of the hoses attached to the iac and see if it temporarily fixes your issue.

Dont have a carby car so dont have carby cleaner....off to supercheap tomorrow.

Unless CRC degreaser works? Dont wanna try without knowing what it does..

It's really not hard 4 bolts, a hose and a plug then clean it and put it together, mine would always stall when I had the lights on but cleaning the valve fixed it

Yeah doesnt seem hard, just need time when I dont have uni,

I personally wouldn't recommend degreaser as it leaves an oily residue behind which needs to be washed off...

Yeah I thought so. Will wait for the proper stuff, till then just keep the revs up at the lights.

It's pretty embarrassing when your car just wants to die. Especially atva car meet

Happened to me while braking, I had the aircon and the radio on...didnt realise what happened till I noticed the HICAS light was on and realised the car had actually turned off...

Just quickly, is it possible to turn the screw so the car idles at like 1200 temporarily so that it doesn't stall? Until I get a chance to get the whole system fixed...or is that not good for the car?

Try it. It won't kill the car.

So I tried to turn the screw, there was no significant changes to the RPM, went from 900-1000, even though I unplugged one of the 2 plugs on the throttle body, but I drove with the Aircon and radio on and it didnt stop...so I guess it did make a difference...

This is exactly the problem that I was having with my 33. This issue points to the AAC valve. This is the valve that allows air into the motor when the throttle is closed, hence keeping the motor running. This normally has a carbon buildup and clogs the airways. That DIY link that was posted up is exactly what I used to take the aac off and give it a good cleaning. Problem solved.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • They see me rollin' they hatin'....... Took me most of the day to make the necessary mods to the mounts to make them fit the car.  Fortunately I was able to just use the mounts that came with the rotisserie. The rear ones are really secure, the front I feel i might reinforce a bit more as it doesn't seem like enough attachment to the vehicle. I'm sure it's fine but better to be safe than (extremely...) sorry.  I drilled and tapped thread into additional M12 holes to each car mount where it attaches to the rotisserie as an extra fail-safe. Without them the side to side movement is just restricted by the allen head pinch bolts, nothing actually goes though the beam. Does now! I still need to adjust the rotisserie to get the car centred in terms of centre of gravity. If it's too high or too low relative to the rotational centre line of the car, it will be like a turtle and roll onto its back or as it currently sits, I dont think I'd be able to rotate it as it sits as it needs to lift the whole car up as it rotates. Ain't happening... I'm going to be nervous as hell the first time I go to spin it on its side...    
    • Oh yes done this when the window started flopping around.  Turns out the guides that run along the rail chanel had crumbed way. Took off the door card and pulled out the window mech, then the window, which you have to pull out through the top. As said unbolt the guide rail and don't spend 30 minutes getting frustrated trying to find a way to slide it out upwards cause that don't frigging work. Drop it down and out through the door hole. All I did to repair it was slice some 10mm clear plastic tube, vertically, then screw it to the guide rail both sides. This tubing rolls inward on both sides and leaves a gap wide enough to hold the window. To finish all I did was lube the plastic tube with olive oil and Bob's your uncle . . . well if he has the operation he can be your Aunt ! !  10 bucks in plastic tube and another 5 minute job done again . . . . YEH BULLSH#T ! My love for Skylines knows no bounds !
    • So was there a solution to this problem? I’m having this issue now. 
    • not expensive, just irreplaceable if you don't go sub 60 at wakie in that thing people will start talking
    • I haven't replaced that, but I have had the doors apart on the r32 a couple of times The door skin will be held on by a combination of clips and bolts, just take it slowly and make sure all the sneaky hidden bolts are out Once the skin is off you should be able to pop that piece off pretty easily, looks like there are only 2 bolts holding it on
×
×
  • Create New...