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R33 Air Regulator

ClutchBurndout-:(

By ClutchBurndout-:(,
in General Maintenance

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R3N3 Proficient

R3N3

Posted
Posted

i presume your talking about the AAC valve?

if you are its located on the back of the plenum, there are two plugs going to it, i think 1 of them is purple.

have a go at cleaning it first, as they a prone to getting filthy. then see how your getting on.

heres a diy thread which helped me:

Diy AAC valve cleaning

89CAL Grand Master

89CAL

Posted
Posted

Thats the Cold start valve, not the air regulator

The AAC valve is the air regulator, that item youve listed only effects how the car operates on cold start. And I think those hoses that are attatched are coolant lines.

But if your still looking for it, pretty sure its on the bottom of the stock manifold.

jiffo Mentor

jiffo

Posted
Posted

So long as your 25 isn't a Neo, it's buried under the plenum, about half way along.

You'll pick it by its alloy body on one end, black plastic material on the other.

Will have approx 16mm air hose in and out and a 12V power plug.

When faulty, your idle will be way too high, out of the range that the AAC can control.

Ty1 Experienced

Ty1

Posted
Posted

it's an absolute bitch to remove! The only way I managed to take it off was to remove the entire intake manifold. I was removing the intake manifold to replace all the coolant hoses anyway, so i thought I'd check out the cold air regulator while I had access to it. By the looks of it there really isn't too much that can actually go wrong with it and the inside of it wasn't even dirty so maybe the previous owner cleaned it?? It has two hoses that come out of it; one goes back into the aac valve and the other goes into the bottom of the intake manifold so I'd be checking them for any air leaks.

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