Jump to content
SAU Community

Car won’t go past 6k RPM

Yianni33
 Share

Recommended Posts

GTSBoy Grand Master

GTSBoy

Posted
Posted

What voltage is the AFM getting to at that point?

What does the CRO say about the signal coming off the CAS?

What does the wideband say about the mixtures?

Have you tested for boost leaks?

Is the knock sensor going nuts?

Why are your coils in place but the cam covers not?

GTSBoy Grand Master

GTSBoy

Posted
Posted

A CRO is a Cathode Ray Oscilloscope, which is commonly used to diagnose signal problems with CASs. Of course it doesn't have to be an old school CRO these days. You can buy USB cheapies that plug into a computer or phone.

And how do you know that the AFM is good? I asked what its voltage was at the trouble point. We need to know if it is saturating at 5V or something equally horrible.

You don't have a wideband. You would need to install one up the tailpipe and check the mixtures at the problem point.

These are all diagnostic approaches that you need to follow to track down a mystery problem.

MoMnDadGTR Mentor

MoMnDadGTR

Posted
Posted
2 hours ago, robbo_rb180 said:

has the CAS got the washers between it and the bracket?
Is the dwell setting correct for coils?

image.jpeg.23862a2c6ea289fb338a5eaf91b7e620.jpeg

ya I don't see the washer/gasket behind the cas this will cause issues. also I changed my coilpacks and plugs still had a misfire and wouldn't rev up same as you. ended up being the harness itself to the coilpacks.  looks like you have upgraded coilpacks, what ecu are you running? as gtsboy stated you need to check your maf voltage before you do anything mate. start with the easy stuff you cant just assume your maf is good. get your hands on another one and try that if you dont want to test it. this is where I would be starting.

  • 1 month later...

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

    • Rezz
      DeAgostini 1/8 scale BNR32 Nissan Skyline GT-R Nismo

      By Rezz · Posted

      Starting with issues 1 - 5, we have already run into a problem...!  Issue #4 contained 2x front brake calipers, instead of 1 caliper and 1x steering knuckle. Will have to call DeAgostini on Monday to sort it out. Anyway here's some photos.  Issue #1 is the front bumper, headlights and number plate. Issue #2 is the front wheel (with "We produced with spartan air." text on the centre cap!) and tyre, the front lip spoiler and cylinder head cover with ignition coils under the centre cover... which will never be seen again. Issue #3 is the bonnet and cylinder head. Issue #4 is the front strut, brake disc (with laser etched metal discs) and brake caliper. I stopped here because of the issue with the missing steering knuckle.  Next update will be #5 - #10 in a few weeks.
    • Rezz
      DeAgostini 1/8 scale BNR32 Nissan Skyline GT-R Nismo

      By Rezz · Posted

      DeAgostini is one of a few companies that release quite large (the largest commonly available size actually) 1/8 scale models in a series of weekly issues over 100 - 110 instalments.  They release different models for different markets and DeAgostini Japan have release the BNR32 Skyline GT-R Nismo last month. I've made two of these 1/8 scale sized cars (one an R35 GT-R from 2012 - 2014, the other I'm just about halfway through, a BNR34 Skyline GT-R from the 2Fast 2Furious movie) so when this R32 was announced there was no way I could ignore it as it's my favourite out of all Nissans.  Each issue costs around $20 so it costs about $2.2K when completed. I suppose it is very expensive for what it is, but the quality and details are really very good, and there are many "gimmicks" like fully functioning exterior and interior lights operated with a remote control, working steering, all doors/bonnet/boot/fuel lid open and close, the side mirrors fold in and it even has a speaker for the engine revving sounds when you turn the lights on.  Each issue comes with a magazine that tells the story of the BNR32 Skyline GT-R Nismo from the first design stages of the BNR32 to Group A homologation and the various racing version that were run in the Japanese Group A and JGTC, and Australian Group A.  So I plan to update the build in this thread 5 issues at a time.  https://deagostini.jp/r32/?srsltid=AfmBOooKjxDc4EUK2rmXqMBPgyHfFJ24s4oEPJBNpnF-lFlsRoW0PE6P
    • Predator1
      Billet Merge Collector for manifold

      By Predator1 · Posted

      As per title.. has anyone used so far? Keen to hear results, comparisons. In the market for a new mani for my new turbo. Any issues cracking?
    • MBS206
      Help Understand GTT Boost Setup

      By MBS206 · Posted

      Re read everything that has been written about this in this thread.. Let us know if you're still confused.
    • joshuaho96
      Help Understand GTT Boost Setup

      By joshuaho96 · Posted

      This would be a new pump with new gears. I'm just unclear on whether it's a good idea to run more oil pump flow if you don't actually need said flow. Oil level is set a minute or so after shutting off a warm engine so wouldn't the high RPM oil level in the sump end up lower all things equal? Plan is OEM clearances, main concern in my mind is whether the OEM pump can keep up with the flow requirements of any additional oil coolers.
×
×
  • Create New...