Jump to content
SAU Community

Idle Moving Around Rb25Det

joe blo

By joe blo,
in Engines & Forced Induction

 Share

Recommended Posts

joe blo Experienced

joe blo

Posted
Posted

hi guys been having a problem with my rb25 in my r32 for about a week. just started all of a sudded

it has a blow off valve that i think is plumbed back and not atmospheric venting. i dont believe it is the blow off valve stalling issue thats very common with atmo blow off valves. had that on my r33 and this isnt same.

what is does is sometimes it idles at normal speed around 1000rpm or so. sometimes it will rev up and down 200rpm from about 800-1000rpm. sometimes if i sit in neutral it will idle good then change into the fluctuating idle thing.

its really getting on my goat so need yas to tell me whats wrong.

thanks guys

Link to comment
https://www.sau.com.au/forums/topic/405934-idle-moving-around-rb25det/
Share on other sites
Manuel Kasko Grand Master

Manuel Kasko

Posted
Posted

Getting on your goat haha!

-clean your AFM (electric contact cleaner)

-clean your AAC valve (Carby cleaner)

Walk through for the AAC in the tutorial section.

AFM you should be able to do yourself

Then report back.

Also make sure that it's not ATMO it's as simple as popping the bonnet don't just guess it is

joe blo Experienced

joe blo

Posted
  • Author
Posted

il do those things.

the reason i think its a plumb back is that it doesnt have a trumpet and cant see a venting bit on it. and seems to have a pipe that looks like it goes back to somewhere. have studied it wen i got the car and came to the conclusion it must be a plumb back but will look again

Manuel Kasko Grand Master

Manuel Kasko

Posted
Posted

Yeah just follow it and be positive it heads back towards the intake.

Could be venting somewhere down the side to hide from police or something stupid like that.

I found it for you just incase.

http://www.skylinesaustralia.com/forums/topic/110431-diy-aac-valve-cleaning-idle-reset/

  • 3 weeks later...
joe blo Experienced

joe blo

Posted
  • Author
Posted

i got out of it easy luckily. looked at motor for abit before i went any further. spotted a broken vacuum line from plenum to cant remember. replaced that and problem fixed.

thanks for the suggestions but. probably would have left it for ages if i had to do that aac thing. alot nicer now but

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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • DanMac34
      R34 Speedo not working after manual swap

      By DanMac34 · Posted

      Hey all  im wondering if you can help me please I have put a rb20 box in my r34 gtt as my auto packed up and a friend had a spare box I know it’s not ideal but it will get me up and running for now. we have done the conversation and everything is working great but my Speedo we got a s13 speed sensor but my Speedo reads double now and I bought a speed converter but still not having any luck.  so I thought I’ll reach out and pick your brains  any help would be appreciated please as I wanna drive my car again 
    • joshuaho96
      Speed Sensor replacement

      By joshuaho96 · Posted

      Drain it. I got official Matic D but you can get whatever is listed as Matic D compatible.
    • QB6SAGR
      Tein Circuit Master- rebuild worth it?

      By QB6SAGR · Posted

      Thanks guys,  Yeah I should at least have them dynoed, at least then I know what I've got as a starting point.  The springs on these are hard as rocks. I vaguely remember Russman saying he was going to sell the shocks to me with the rocks fitted, as he was keeping the softer springs for his new setup.  I didn't click at the time but of course that was to let me know the shock/spring wouldn't be matched.  I also remember pricing up new springs around 2014-15, but, house, money etc. it never happened. So that was another reason to have them rebuilt. I have rebuilt the forks on many motorcycles so I think I could handle the seals on these easily enough, but getting the valving right would be a rabbit hole I cbf exploring.  Duncan, interesting to hear RP was tuning these back then. I might give them a call.  In the mean time I have been busy fitting sway bars. The Whiteline rear sway bar I purchased 15 years ago finally got fitted, along with the Whiteline front bar that showed up last week. Just waiting on new links for the front sway bar to finish that off.  And my spare set of advan AVS VS5's should be back from the powder coaters in a Pearl White finish sometime this week, with a set of Hankook RS4's lined up for fitting.  And then I just have all the suspension bushes to do. A comprehensive kit is on the way... Lots to do before the Ararat hill climb. Cheers guys 🍻   
    • funkymonkey
      Howdy Y'all

      By funkymonkey · Posted

      Nice car! I’m glad folks in the US have gotten past the FnF and are buying real cool cars like the 260RS I was with a bunch of mates in Portland about a year ago and spotted a green Stagea (just a regular 2.5T AWD) parked about 2 blocks away and they were like “a what?” So I made a bet with them for a round of beers and said “ok one of you run down there and tell me if the steering wheel is on the correct side” 5 mins later the American comes trudging back up the hill and goes “he’s right guys. Ok what beer do you want?”
    • Dose Pipe Sutututu
      Starting again

      By Dose Pipe Sutututu · Posted

      Should replace OR drop the tank, give it's good clean. Might be worth replacing that entire fuel level/pump/cradle thing with this: https://frenchysperformancegarage.com/products/fpg-s13-180sx-r32gtst-single-pump-hanger-kit-billet-hat-6-v3-fpg-089?gQT=2  
×
×
  • Create New...