Jump to content
SAU Community

Car Runs Like Like Cr#p

R33silverS2

By R33silverS2,
in Engines & Forced Induction

 Share

Recommended Posts

R33silverS2 Mentor

R33silverS2

Posted
Posted (edited)

Hey I'm really hoping there is a simple solution to this problem but then again i'm prepared for the worst.

Basically my car now runs sh#thouse on boost. Driving around town feels normal and fine but as soon as you give it a little say over 50% throttle, it holds back, and feels like its labouring - like being in to high of a gear, then kicks in and drops out again. It only started doind this in the last day or so, and previously it had been running real well on 11psi since the new pump and safcII tune. But now it feels like its going into R&R type of mode or something real early in the rev range - from about 2000rpm. something is definately wrong, boost still ramps up to 11psi but the car feels DEAD - as in overtaking would prove an issue...

Any ideas??? Anyone encountered this problem before and fixed it???

Mods are listed in signature, plugs were re-gapped to .8 when i had the cooler done. It was fine before, so some existing part has stuffed up i would think.

Any help would be much appreciated - I'm sick to death of this thing being so temperamental.

Edited by R33silverS2
Link to comment
https://www.sau.com.au/forums/topic/162044-car-runs-like-like-crp/
Share on other sites
R33silverS2 Mentor

R33silverS2

Posted
  • Author
Posted

Yeh all possibilities i guess that i will have to look into. Thanks to those who replied.

Thing is i just came back home now and it was driving like normal again... :P but it did it yesterday as well for a bit, so it seems very temperomental. When it was doing it earlier this afternoon it was quite warm, i popped the bonnet to check all the vac lines etc for leaks (none found) but i touched the front of the pod and it was damn hot. The pod itself is stainless steel so i guess it heats up quite a bit (un-shielded) - bad i know... shame shame. Could it be as simple as this?? As in requiring a heat shield for the pod and a clean of the afm possibly?? I noticed that some people are not very convinced on the stainless pod's filtering potential (blitz). I havent noticed it doing it when the whether is cold, but thats purely cos the problem has only seem to have arisen in the last couple of days, and haven really been testing it in different conditions. Would sucking in really hot air be the problem maybe?? perhaps amongst other things like plugs etc...

sky-017 Proficient

sky-017

Posted
Posted

just a suggestion - make sure you have the right spark plugs , as far as hot and cold tollerance . many problems can arrise if they arent the right type . clean your AFM out with carby cleaner - look into some modification around your pod - to prevent excess engine heat entering . im currently in the process of trying to get my pod lowered down into my front bar if possible. saving me making an enclosure , and hiding the pod from cops.

R33silverS2 Mentor

R33silverS2

Posted
  • Author
Posted
Could be a lose connection to a sensor, was it doing it before you had the pod filter on there?

Pods been on there since i got the car, so it had been running fine for the most part previously. Just seems odd cos its not like i have changes something ecently casuing this to happen. It just happened by it self sorta thing. Perhaps certain components are starting to fail or need cleaning etc.

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

    • GTSBoy
      Boost cut after swap(RB25DET NEO) R34

      By GTSBoy · Posted

      Don't even try to run it on the stock ECU if you're going to have the boost controller bring boost above ~10 psi. I've already told you that. If you use the Nistune ECU, you will need to CAREFULLY read the available documentation for Neo tuning, and read some threads on the Nistune forums, to discover the various things you have to do to prevent the ECU from going bananas when the boost is too high. The is a table associated with th boost sensor that must be modified to prevent it from shitting the bed. This is just one of the things that you will need to do to the tune in Nistune, because the Neo turbo ECU will be expecting to see a number of things (such as the TCS) that are not there, and you have to block the DTCs on those. It is totally not surprising to me that you are having the problems that you are, but the solutions to these problems have been known for >15 years. So just get it done.
    • dyl33
      VOLK RACING GTC CENTRE CAPS

      By dyl33 · Posted

      Centre caps $250
    • Kapr
      Boost cut after swap(RB25DET NEO) R34

      By Kapr · Posted

      Hi. Sry iam not a mechanic and iam not at the car atm so i dont know 100% but they told they measure those and even try to change those. AFM they have two. Coils are new a they have my old one too. Plugs too. ECU...we have 25 NEO stock and Nistune 25 NEO.   But i dont know if any one those could be the problem and why/if/what can cause this, Only thing they did not check is fuel...but that walbro 255 is new(like 1,5 years)... That fuel pressure gauge idk...but i let them know Any suggestions?   EDIT: how can they know if it is like you say he ECU pull power when it reaches a specific boost level that is too high? Tha car has boost controler
    • Duncan
      Boost cut after swap(RB25DET NEO) R34

      By Duncan · Posted

      Can you clarify what you mean by boost cut, do you mean it misfires both when under load (driving) and when stationary and out of gear? Or does the ECU pull power when it reaches a specific boost level that is too high (boost control issue)? Does it occur at idle with no throttle? When you say "the ECU is OK", what ECU is it and why do you think it is OK? Have you used the NEO ECU, and if so do you have a MAP sensor attached? Same for the AFM, why do you think it is OK? Do you have any way to put a fuel pressure gauge on it (even just a mechanical one between the fuel filter and fuel rail)?
    • Kapr
      Boost cut after swap(RB25DET NEO) R34

      By Kapr · Posted

      Hi.. Just another problem. So maybe you can help. I(my mechanic) done swap from my RB20DE NEO to RB25DET NEO. Everything is OK but we have a boost cut. Coils/Plugs are ok...AFM is ok. ECU is ok. I have Walbro 255 but it "changed" sound few months ago(you can hear it ouside) you did not hear that when it was new(maybe faulty?) Sooo...what now? What can cause this boost cut? It is even when you standing still...
×
×
  • Create New...