Jump to content
SAU Community

rb20det R31 aussie mod

frog_stompR31

By frog_stompR31,
in General Maintenance

 Share

Recommended Posts

frog_stompR31 Apprentice

frog_stompR31

Posted
Posted

help me i have a r32 motor its a 92 year mod

the problem i have it miss fires on No6 only on idle and is fine when reved passed 1750 rpm

i have so far added plugs and coil packs and even moved my old ones around no change

the loom piece between the coil packs and the igniter i replaced and no change i also got anothed igniter and no change

the car also seems to idle low

i also when to the efort of doing a comp test and all cylinders have the same 150

can some one help me out ...?

Link to comment
https://www.sau.com.au/forums/topic/69211-rb20det-r31-aussie-mod/
Share on other sites
Oosh Veteran

Oosh

Posted
Posted

Are you certain it's just No6, I have a miss @ idle i haven't completely eliminated, but cleaning the AAC & AFM helped. There's a lot of debate on what to use on AFMs, electrical contact cleaner is safest but didn't do the job for me, many recommend Nulon Break Cleaner and I can add my endorsement too.

I used the contact cleaner give all the associated sensors' plugs and sockets a clean too. It's better but not perfect, I also thnk i need to further adjust the TPS.

A bad CAS can also cause lumpy idle apparently, i have two and swapping them around made no difference, but might be worth you looking at.

There's an AWFUL lot of threads and info. on bad idle on theres forums so go for a search and BIG read up.

frog_stompR31 Apprentice

frog_stompR31

Posted
  • Author
Posted

i havent tryed a cas yet but ill look into it thanks but my afm is ok as i take off the connector and she dies out the motor will not run ...

not looking at going through all the shit threads etc to do so as i dont se many people withe this same problem yes its only on No6 at idle

  • 4 weeks later...
frog_stompR31 Apprentice

frog_stompR31

Posted
  • Author
Posted

still have same problem it misses on idle but i took it to a dyno day and made 139.8rwkw

can anyone help me out need to know what will stop it missing on idle

havent changed plugs only changes afew that looked dirty may need a new set and a cas ill try but will a blocked fule filter do this also cause it tthe rb25de one from my last half cut havent got a new one yet

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

    • Marek
      Hi everyone.

      By Marek · Posted

      Haha, i kow right? Could have bought so many cars for the same amount of money (or less) but driving Unicorn gives you at least +1mln to style 😅. Like wise man said "life's to short to drink cheap wine and drive boring cars" 😉
    • ARB26
      S1 Autech 260RS Wiring Diagrams

      By ARB26 · Posted

      Newbie here, proud owner of an Autech 260RS. I'm on the hunt for wiring diagrams specific to the 260RS, particularly S1. I've ran my eyes through R33, R34 Diagrams, there are some similarities, however continue to find incorrect wire colours and pins on connectors in the 33,34 diagrams.   I was hoping someone could point me in the right direction? I'd be happy to pay for the originals in Japanese. I can translate them, at least they would be accurate.   Any help please would be greatly appreciated, never heard an RB26DETT before let alone driven one, and I've got a spaghetti monster of goodness to sort out.   Cheers Benny  
    • 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 🍻   
×
×
  • Create New...