Jump to content
SAU Community

R34 Gtr Won't Idle

Chris-06R

By Chris-06R,
in Engines & Forced Induction

 Share

Recommended Posts

Chris-06R Community Regular

Chris-06R

Posted
  • Author
Posted

Hey Norman, got a nismo MFD...

If I got the intake smoke tested is that likely to show up any leaks that my method didn't?

Bsa - nope, didn't replace any vac lines but I couldn't find any signs that any were damaged. The car went into the garage fine - put an oil filter relocation kit on it, and now it doesn't idle... very frustrating trying to track the problem down.

mr 32 Grand Master

mr 32

Posted
Posted

Hey Norman, got a nismo MFD...

If I got the intake smoke tested is that likely to show up any leaks that my method didn't?

Bsa - nope, didn't replace any vac lines but I couldn't find any signs that any were damaged. The car went into the garage fine - put an oil filter relocation kit on it, and now it doesn't idle... very frustrating trying to track the problem down.

sounds like they didnt set the nismo mfd correctly, this wouldnt be effecting your idle however just wrong % shown on the mfd.

smoke test depends on how they do it. best way is do the 'start ya bastard' test. spray some around the vac hoses if the revs go up you found the leak.

let me know if you need a hand

Chris-06R Community Regular

Chris-06R

Posted
  • Author
Posted

Yeah, I sorted the MFD issue by rotating the TPS - now reads 0-95% or something, which is better than before...

Can anyone suggest any electrical diagnostic tests I can do which might help to point to the problem? If I got hold of a wideband oxy sensor would that enable me to determine if I have a vac leak? (i.e. car would be lean at idle?) Is there anything else I can do?

Chris-06R Community Regular

Chris-06R

Posted
  • Author
Posted

Ok, so I think I've finally fixed it!

Connected the standard ecu and started it up to try and log any fault codes - car idled fine, maybe a little too low ~600rpm.

Didn't stall at all after about 5 mins of idling and on/off throttle so I hooked up the PFC - all good there too...

Car was still idling too low though and was struggling a bit, so I wound out the idle screw and got it back up to 800rpm - idled smoothly after that.

So what changed???

My theory now is that the remote filter and oil cooler put extra strain on the oil pump and because my idle was probably too low already it couldn't keep the engine turning... Today's warmer weather probably helped it a bit and now that I've set the idle higher it shouldn't be a problem. If this is not the reason then I have no idea, the car has magically healed itself...

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

    • TurboTapin
      RB25DET with solid lifters - which cams ?

      By TurboTapin · Posted

      I now seem to be limited in power due to my rev limit/hydraulic lifters in my built RB25. I'm looking into converting over to Tomei solid lifters. Question for anyone that has done the conversion. I was always under the impression that when using the Tomei solid lifter conversion, you would also require new valves (Longer or shorter stems, I can't remember which).  I don't know where I got this idea, as so far I see no mention of this in any of the Tomei documentation. It just states I need the Tomei solid buckets, solid lifter cams and upgraded springs. As my head is already built, all I would need is another set of 1000$ Kelford cams, 500$ buckets and about 4H hours of my time installing and I'm off to the races!?!? There's no way it's that simple, I must be missing something? 
    • TurboTapin
      Why am I hitting a power wall with my stroked RB25?

      By TurboTapin · Posted

      I couldn't agree more. I should have started from the get-go with a NEO or solid bucket conversion. I started looking into converting over to solid lifters yesterday. Now for some reason I was always under the impression that when using the Tomei solid lifter conversion, you would also require new valves (Longer or shorter stems, I can't remember which).  But I see no mention of this on any of the Tomei documentation. It just states that I need the Tomei solid buckets, solid lifter cams and upgraded springs. As my head is already built, all I would need is another set of 1000$ Kelford cams, 500$ buckets and about 4H hours of my time installing and I'm off to the races!?!? There's no way it's that simple, I must be missing something? 
    • foney
      Cheap Gtr For Sale

      By foney · Posted

      BRUH, one of the biggest mistakes of my life..... and i've had plenty ;[)
    • Kapr
      "Cheap" bolt on turbo on RB25DET NEO

      By Kapr · Posted

      @Murray_Calavera iam just considering options 🙂 of course it is very expensive so that why i ask here 🙂  @joshuaho96 I looked at that GCG hybrid(i remember looking at it few weeks before) So this is "that" hybrid where i send them my turbo and they upgrade the inside to Garrett stuff and then they send it back. It cost around 1200-1300 USD which is FAR cheaper than the HKS and it is what iam looking for(i just do not have experience like this...to send something off to "upgrade" ) @tylink720 that is like 150 USD turbo no? 😄 I dont think i have the "ease on my mind" with this kind of turbo. I just put over 7000k USD to "LINK" up my engine...dont want to blow it up with cheap turbo 😄     EDIT: https://www.cj-motor.com/gcg-turbo-charger-for-nissan-rb20det-rb25det-high?srsltid=AfmBOooVeOZ6CZ6r1AIv5m-KPaa6BvudIPJTY8LW78khkd-gQlsaCht9 I looked at this and it seems ok? It is that CGC hybrid and it costs around 1250 USD (with back shipping). Do any of you have experience with this hybrid on NEO turbo? I quickly look thru the forum/web and it seems very good.
    • Rezz
      First time Skyline owner

      By Rezz · Posted

      Echo the awesome sentiment 👍 Definitely a car worth saving. Looking forward to seeing updates as well. 
×
×
  • Create New...