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For All Those Who Ever Had Back Fire, Idle And Aac Valve Problems

WogsRus

By WogsRus,
in General Maintenance

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WogsRus Veteran

WogsRus

Posted
Posted

HI ALL

Well here it is, after spending countless hours reading and trying everyhting, nothing would cure my backfire and the fact that i could not set the engine idle with the TP off lower then 900 rpm. Cleaned my AAC Valve, tested for leaks ect ect. You name it i tried it.

IT turns out the culpret was the Air Regulator, the one mounted below the intake plenum. Mine was simply not closing fully, it would simply not allow the orfice to close. So air always entered the car, enough to make a differance.

I took mine apart, being very carfull, a whole heap of stuff inside, and cleaned everything with carb cleaner, and problem solved.

The air regulator is an absolute pain in the ASSSSS to get to, here is the pic for R33 and R32.

I recomend everyone tries this and see if their problem goes away.

If it helps others i can do a write up on what needs to be done to get it off.

To test each one, simply plug up a battery to the terminals and after 7 minuts the orfice should be closed.

Good luck all, my problems have gone away, well have other problems but one down. LOL

Air_Regulator_R32_GTST.pdf

Air_Regulator_R33_GTST.pdf

Air_reg_Test_R33.pdf

R33S2 Grand Master

R33S2

Posted
Posted

Top stuff matey, I didnt know it exsisted, just how hard are they to get out?

A write up on cleaning it would be very helpful, I have a feeling this is a culprit that has gone unnoticed.

WogsRus Veteran

WogsRus

Posted
  • Author
Posted (edited)

I will take some pics on the weekend, and do a write up then. It's noo to bad, but i found it was easier to acces from the bottom, from memory, there is only one bolt to get to, the hardest thing is removing the hose clamps.

Basicaly, if you've cleaned your AAC valve and nothing, then this is the next thing in line, i found mine was bugared simply because my rpm idle set procedure do not sit below 900 rpm.

Inside ther is some springs and a diaphram, not to bad, but you don't have to take it appart, if you spray carbon cleaner into it and so forth it will remove 90% of the problem.

Edited by WogsRus
  • 1 month later...
Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

I couldn't be stuffed with mine, so I just blocked the hose off with a bolt for now till I can be bothered getting to it...

One downside, on cold starts you need to warm up the car before it's driveable, but summer is here now so I'll do it at the end of summer.. haha

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