Hey Guys,

 

Noz said on conzult that the AAC valve wasn't working so i have now replaced that unit with the air regulator.

 

I start the car up with AAC removed and then set base idle to 650, however once i connect the aac it will shoot right back up too 1500 and no matter what i do on the screw of the aac valve it makes no difference.

 

Not sure if this is related, recently my peak boost was set to a max of 17 and if i increased my settings my car would boost to 17. However i have noticed that i can only boost to about 14.3 and no matter what i do it doesn't go any higher. today after changing the aac valve i have noticed that there is some sort of hissing sound come from the rear of the engine. For the life of me i have had a good look for hours and cant locate the source of the sound.

 

Have new spark plugs, injectors are working fine and throttle bodies look very clean!

 

ALSO i have noticed that unplugging and plugging the AIR regulator connector makes no difference with the engine is running, is this mean to be the case???

 

HELP!!!

Edited April 16, 201312 yr by Javelin

Just replied to you pm, if the air regulator is going wide open the noise your hearing could be the air going through the assembly, try clamping the S shaped rubber pipe with long nose pliars or similar. Check the tps hard idle switch this will raise the revs if the setting or even the connection is bad.

 

Jeff TT

Hi Jeff,

 

Thanks for the info, would the boosting be related to this at all? Would a boost leak cause high idle?

ok update, tried everything still have the hissing sound coming from around the aav unit or near there. Any vacuum pipes around that area?

 

This one is boggling my mind!!

yes...and on them...

 

http://www.pexcom.com.au/z32cms/e107_plugins/content/content.php?content.335

 

and

 

http://www.pexcom.com.au/z32cms/e107_plugins/content/content.php?content.458

 

also the unit might be damaged, have you checked replaced the clips? and taken the hoses off?

Well recentl jeff setup my timing with new plugs etc. I just changed my tps with another known working on and its still the same thing!

Have you set the new tps to the correct voltage when at rest?

This can also be a cause for high tick over if set incorrectly.

I think you need to be at .42 volts.