Jump to content
SAU Community

Something Fell Of My Car And I Dnt No Wat It Is

smcqueen89

By smcqueen89,
in General Maintenance

 Share

Recommended Posts

smcqueen89 Collaborator

smcqueen89

Posted
  • Author
Posted

i looked in the engine bay and everything looks fine iv started the car im not sure if it was just laying around wit bits and pieces of the car of its vital to the car

its funny coz i just got the car last week and wen doing a service on it i have found parts just sitting in the engine bay eg turbo gasket

Nic_A31 Grand Master

Nic_A31

Posted
Posted (edited)

That's your AACV....car ain't going to idle or run without it....it should be mounted properly and hoses clamped on tight....very hard to beleive it just fell out.

Hopefully it was just another spare part laying around in the engine bay....

It mounts on your intake plenum around cylinders four and five, just below the throttle body.

Edited by Nic_A31
jiffo Mentor

jiffo

Posted
Posted

That's your Air Reg.(cold start fast idle valve)

Car will run fine without it PROVIDED the air hoses are re-connected properly.

Otherwise you'll have a huge air leak and she won't go.

My guess is it's been by-passed previously (aftermarket plenum perhaps) and finally decided to fall off.

Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

It could be blocked off in the past and hence not affecting the engine. If that "were" to fall out, you'll have massive misfires, idle problems as it loops into the plenum.

Those usually fail all the time on RB20DETs and mechanics just block them off.

Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

[quote name=ClutchBurndout-:(' timestamp='1300758954' post='5724847]

wait stop everything

u can block them off?

Correct, that's what mechanics so. Problem is sometimes on very cold days you might find you will need to slightly press down the accelerator to get the car to start.

The hose comes off the cross over pipe, into the AAC and back up into the plenum/TB. I've found out on several RB20s (including my previous car) that it was blocked off with a bolt.

Problem is when these AAC fail, no matter what you do, the idle is quite high. People often mistaken this for the IAC valve, spend hours adjusting idle, etc.

  • 2 weeks 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

    • GTSBoy
      Looking for someone with a R34 front bar

      By GTSBoy · Posted

      That looks good, but I think you're going to need much beefier side skirts now.
    • GTSBoy
      Most women will agree that parking is the most taxing part of driving

      By GTSBoy · Posted

      They are daft and there's a reason it never caught on. Steering feel? We don't need no stinking steering feel!
    • GTSBoy
      new 1.5 LSD issues/concerns

      By GTSBoy · Posted

      I gotta pull you up on this. It's driving me crazy. A shutter is something that closes, like over a window or in a cmera. The word you want is shudder. That LSD is clearly f**ked. Take it to a diff shop and get it disassembled and examined by an expert. YOu might have plates welded together or something equally crazy.
    • GTSBoy
      M35 Brake caliper replacement

      By GTSBoy · Posted

      Define "starting to fail". Wy not just rebuild them?
    • GTSBoy
      S1 rb25/s14 starting problem

      By GTSBoy · Posted

      Check the Nistune doco. There are a few assumptions being made here that might not be valid. I will list the things that occur to me: Base map. Base map for what? Base map for Z32? Then the cranking pulse width is probably wrong for an RB25. The extra 500cc of capacity might well be enough to prevent it from catching. Base map for RB25? I don't think you can load one of those into a Z32. You have to just make the settings correct for an RB25 in the Z32 base map. That is either K or the TIM to get the pulsewidth right. Loom. You bought a loom for an RB. And you plugged it into a Z32 ECU. Did you make sure that any iwre differences were swapped. From memory, there's at least a couple. And as per the others, I would suggest making sure that the fuel pressure is correct while cranking and that the injectors are actually flowing as expected. They really must come out and go on the bench, unless you do find that you have messed up as per above points. I would also suggest watching in Nistune to make sure that everything is reading correctly. That the correct binary flags are raised at the right time (like the crank signal), that there's no stupid values in K or TIM. That you have not got mismatched firmware for the ECU and/or a wrong image loaded.
×
×
  • Create New...