Jump to content
SAU Community

Recommended Posts

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

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

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.

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.

[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


  • Similar Content

  • Latest Posts

    • Im not entirely sure exactly what or where its leaking from, he started to pull the boots to swap to my new tie rods + ends and it just vomited fluid, so he closed em up up, swapped the rod ends to the old rods and let me know so I can figure a solution out, im guessing its all origional as as I passed 103k miles earlier this year im sure its just in need of a full overhual/rebuild anyways.    If i could just yank it off and be good it wouldn't be an issue to ship it out and wait for the turnaround but the guy I work with doesnt really have space to keep my car for a week or two at a time, would rather drop it off and have a replacement ready to drop in
    • What do you mean by "seals"? Internal hydraulic seals (ie, is it leaking PS fluid?) or the rack boots that close the rack onto the tie-rods? Because the former is a rebuild, and the latter is trivial that you or any nearby mechanic could do. Dunno about the cowl. Just buy what you think is required and get anything else you find/break afterwards. Wing? Dunno. Don't like R33s enough to pay attention to them. Mirror glass is just glass (on the surface that you want to polish). Go for it.
    • Hello! Long time lurker, been using the forums to address concerns and questions from afar for a while but I've struggled to find some answers so I guess its about time I made an account and formally asked some more knowledgeable people, since finding local skyline owners is hard (and shops that are knowledgeable or trustworthy to work on 'rare' cars are non existent out where im at, as skylines are quite uncommon to find in the wild around here). So the main 3 questions I have, 1: Steering rack has blown seals, well.. they kind of hold but they are not sealed properly anymore and as my R33 is my DD, i cant exactly rip the rack out and send it off or attempt to fix myself. As most refurb ones are around $1,100 or more shipped, and I have other things I need to work on around the car, I was seeking clarification on whether an S15 rack will more or less bolt right in, and whether a common mechanic could do any other required work to get it to fit. I ask, as I've found a supplier than can sell a manufactured as oem one for around 400, if not I'll likely order a used one from Jacks JDM, and take a risk on the seals there. The second question i have is that im replacing the front wiper cowl and have planned to buy 4 new clips and a new center clip but wasnt sure if there were any other clips that would also need to get replaced while I was at it. Given im sure any that are there now will simply break when I remove the old cowl... Last thing would be a fairly straight forward question, i think. If I manage (strong if, finding one has proven to be a pain) to find a R33 GTR spoiler/wing will it require much modification to bolt to a S2 R33 GTST? I've read the bolt patterns dont match but otherwise would bolt in, only options I have found with much luck is China stuff on ebay and carbonetics, which has a nice $650 shipping fee... so if anyone has any pointers where a US chap could locate one that would be great Random side question as well, the mirrors as I understand are mirror glass, and as im planning to polish my windows from water spots and surface scratches, i was hopeful cerium oxide would be fine for them too, as my research points to, but clarification is always nice. Any pointers would be appreciated, and while I have scoured the internet for answers if I missed a prior post somewhere that may answer these directly please point me towards it, as i must have simply missed it. I have seen a post here or there that has mentioned it, but I usually get 50-50 answers, or half answers... I dont have a lot of fab experience or mechanic experience, outside of hydraulic and pneumatic stuff I did in the military and with how hard it is to source stuff in the US, id rather not wing it and hemmoraghe money lol. Thanks guys! Sorry for the monumental first post haha
    • Yep, there's a very minor drift left that happens a few seconds after letting go of the steering wheel, but not enough to bother me. Enjoying the car still!
    • Got you mate. Check your email!
×
×
  • Create New...