Jump to content
SAU Community

Diy Aac Valve Cleaning & Idle Reset.

insu

By insu,
in Tutorials / DIY / FAQ

 Share

Recommended Posts

confuzion Community Regular

confuzion

Posted
Posted

Just another to show my appreciation! :) Great write up.. seems as though my gasket wasn't sealing properly, so I did it again and used the gasket goop as mentioned and now all has been sweet the last couple days so I think it's safe to say it's sorted.. Cheers! :)

Link to comment
Share on other sites
  • 2 weeks later...
  • Replies 260
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

insu
insu

Updated: 18/05/06 Disclaimer: This information is provided for your information only, anything you choose to do with this information is completely up to you and in no way will I, Skylines Australia

space_monkey
space_monkey

Thanks Anthony. I'll give that a go after I pick up some small screwdrivers. I can't seem to get my car to idle below 750rpm no matter how far in I turn the idle adjust screw. When I try to set the b

Posted Images

  • 2 months later...
rad100 Grand Master

rad100

Posted
Posted

when i cleaned my aac valve the bottom gold piece that connects the two hoses fell out.

is this just press fitted? if so mine doesnt fit to snug.. its abit wobbly.

i put some sealant around to help it stay in there. is this normal to be loose?

cheers

Link to comment
Share on other sites
  • 1 month later...
mikeyR33-T Collaborator

mikeyR33-T

Posted
Posted

when i cleaned my aac valve the bottom gold piece that connects the two hoses fell out.

is this just press fitted? if so mine doesnt fit to snug.. its abit wobbly.

i put some sealant around to help it stay in there. is this normal to be loose?

cheers

very good post :) but my issue is that when starting car for the first time in the day, it will kick over then idle very low for 5secs and die if i dnt give it some throttle to get it up to over 1000rpm..

everytime i start it, it will start but very low idle and dies.. today at 11am i started it, im in Adelaide and it was maybe 15degrees, turned it over let it start then within 5 secs it died, then kicked it again and it took about 10 secs to idle right....

would this AAC cleaning fix this or is it the fuel pump, im thinking of replacing the stock one with a WALBRO? and maybe even fuel filter and oxy sensor :) thanks reply or PM if you have any ideas

Link to comment
Share on other sites
  • 1 month later...
Skylinestyle101 Explorer

Skylinestyle101

Posted
Posted

i thought i would give this a go and im very suppries by the results. I was finding that when coming to stop at lights of my driveway the car would drop idle to almost nothing then kick and drop again. it was ok if i kept in some gas as i can to a stop but would start faulting again if i didnt gas it. I just completed this walk through and am very pleased to report that my problem seems to have cleared. the car feels smooth when i come to a stop and the revs dont dip when i pull in the clutch anymore. big thumbs up and very handy guide

Link to comment
Share on other sites
  • 2 months later...
Crumpy Contributor

Crumpy

Posted
Posted

I know it's a old thread but thanks heaps did the clean today worked perfectly no more rev hunting at idle, stalling at lights ect, feels like a new car :) and I didn't even have to adjust the computer idle switch which saved a whole heap of time however that bottom pipe is a real pain to get off and on but other than that a very easy job took bout a hour n half( I know nothing about mechanics either).Thanks again.

Link to comment
Share on other sites
  • 1 month later...
Luke HCR32 Collaborator

Luke HCR32

Posted
Posted

I did the clean yesterday, ever since my car idles normally without the AAC plugged in but jumps to 1800 once it is plugged in.

I tested it by running the car without the solenoid bolted to the valve housing and noticed that even though the car was warm the solenoid would extend fully as soon as I plugged it in, thereby allowing a shitload more air through.

Fuse? Computer? f**ked solenoid?

Link to comment
Share on other sites
aussietroy Proficient

aussietroy

Posted
Posted

from what i have read its under the aac somewhere on the block.

I have a similar problem to you. without aac plugged in it sits nicely at 800rpm. plug it in and it jumps to 1200 ....

I am stumped as to what to do next. Can anyone point us in the right direction ??

Also what happens if you run without aac plugged in ?? wontt cold start or will stall at idle or ??

Link to comment
Share on other sites
Luke HCR32 Collaborator

Luke HCR32

Posted
Posted

As far as i understand that air regulator compensates for the A/C, the AAC solenoid should have a separate signal.

I'm hitting the dyno tomorrow I'll get them to check for a computer fault.

Link to comment
Share on other sites
D.I.Y. Mik Veteran

D.I.Y. Mik

Posted
Posted

Heres a pic of a 32 gtst AAC guts.

It was filthy and needed a good scrub with carby cleaner.

See the dodged up spring, im replacing that of course.

Note also one plug and one pipe.(cant see pipe in pic)

?So when tuning the idle i wonder if i unplug the brown plug like you said (only one)?

post-89755-0-16827800-1333686471_thumb.jpg

Link to comment
Share on other sites
Luke HCR32 Collaborator

Luke HCR32

Posted
Posted

I didn't manage to pull the guts out of mine like that, was that spring from the AAC valve or the solenoid?

Had my car on the dyno for a tune yesterday with some upgrades (Nistune, turbo, injectors, Z32 AFM) and I don't have the high idle problem anymore, guessing it was a computer fault.

Link to comment
Share on other sites
  • 2 months later...
Duncan Grand Master

Duncan

Posted
Posted

Tom thanks for this thread, it has been helping people for 5 years :thumbsup: Including me today.

I've fixed the pics in the first post too. Anyone else with issues with threads, please use the report to moderator button, I didn't realise the pics were borken!

Link to comment
Share on other sites
insu Rising Star

insu

Posted
  • Author
Posted

Tom thanks for this thread, it has been helping people for 5 years :thumbsup: Including me today.

I've fixed the pics in the first post too. Anyone else with issues with threads, please use the report to moderator button, I didn't realise the pics were borken!

Has it been 5 years? Jeebus. Where does the time go?

Link to comment
Share on other sites
  • 4 weeks later...
Spring&WateR Community Regular

Spring&WateR

Posted
Posted

Hey guys so gave this guide a go... ended up snapping all the bolts holding my aac to the plenum :( any ideas where to get replacements asap ? probably going to give bunnings and supercheap a look tomorrow...

Link to comment
Share on other sites

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

    • Chris_Guthrie
      Misfire/stalling issues

      By Chris_Guthrie · Posted

      Any recommendations on a decent replacement manifold that doesnt break the bank or require additional mods for the stock turbo setup? I figure if I'm going to pull the manifold off anyway to fix the studs might as well replace it. 
    • Chris_Guthrie
      Misfire/stalling issues

      By Chris_Guthrie · Posted

      So I checked the turbo out today. Very minimum play at all just enough for the oil to take up when it's running. I did find an exhaust leak at the manifold. 1 stud all the way in the front is missing and the one all the way in the back is broken off. Front has visible signs of an exhaust leak. I'll fix that soon but that's not my problem still.  I also found that the nipple coming off the turbo had the hose capped off and a hose ran from the j-pipe by the bov going to the wastegate. I removed that hose and capped that nipple and put the turbo nipple hose back on the wastegate.  There was a ton of oil residue all through the charge side of the intercooler piping going to the throttle bodg. I'm thinking that's from the pcv. Doesn't seem to be coming from the turbo that was all clean on the pipes side.  Haven't had a chance to check fuel pressure yet, haven't had time been having to pull a lot of doubles at work. I did pick up some carb cleaner to clean the iacv but wanted to make sure I had a fresh gasket in case the old one rips when I pull it off.  I'm waiting on a MAF that was supposed to be here today but delayed to Monday. Have a double Monday and Friday and work all of next weekend so going to try to find some time in the middle of the week to try that out. Did about a 10m trip around the block today and towards the end the issues were coming back. Fingers crossed on this MAF but if not just going to throw a fuel pressure gauge in and see where I'm at.  Did notice today that I can definitely hear the injectors pulsing. Very audible clicking coming from them. Assuming that's normal? Should also mean CAS is functioning somewhat properly. After it warmed up when I started it the intermittent misfires came in again. Did start doing that before it was fully warmed up. 
    • klutched
      GOT SUM's RB34

      By klutched · Posted

      This morning I carefully reinstalled the manifold and started looking at a couple of things I need to do.  Heat wrap arrived sometime today so I popped into the shed with the missus dishwashing gloves and started wrapping the first half of the dump and the screamer/plumb back.  Once I do the second half I'll be able to final fit the turbo and exhaust up.  Also pulled the harness out today and started terminating it at the ECU end. A connector is done, just need to run the remaining wires that arent in the harness - 12v, gnd and couple I/O
    • Dose Pipe Sutututu
      Rear suspension upgrades

      By Dose Pipe Sutututu · Posted

      A31 is pretty much the same thing without HiAIDS I mean CAS, no improvement lol. Not to late to send it.
    • carnoobb
      Newbies

      By carnoobb · Posted

      Thanks for all the replies! I also wanted to ask if wheels that were fitted on Ford Falcons would fit the 350GTs as well? In the area I'm at there aren't that many options for secondhand wheels and new ones here are way out of my budget. From what I've seen, most of the wheels that are available that were fitted on Ford Falcons have an offset of +33 to +36, with a centre bore of 70.5mm whereas the stock 350GT's ones are 66mm, can't seem to find any hubcentric rings that fit that difference though. 
×
×
  • Create New...