Eplebnista

I am having intermittent stalls coming all the way off the throttle and my thought is that my 30 year old IACV is the culprit.

How much of the intake has to come off to do this job? If I have to remove the intakes from the heads it is not going to get fixed before I go the PVGP on Friday.

Thanks

Otto

Speedtoys

So much has to come off, might at well refresh your way back up FROM the ISV.

Intake pipes at least, so gaskets and new rubber connectors, and every hose that they attach to, throttle switch, because youre threre...goes on.

zekgb

Depending on how your hose clamps are oriented you should be able to get at it by removing the center T from the throttle body along with the airbox and MAF.

Imo000

I removed mine without touching the intake pipes. Az said above, orientation of the clamps is the key. Mines were oriented just right.

Snark Shark

When I had that issue, it was my MAF going bad.

ISV is doable by taking the T out, like others have said. I did it last winter. But it's really tricky to get the T back in. Takes a lot of fiddling to get it in just the right orientation where it will slip back in. And you have to put the breather hose to the T on loosely, and then push it onto the socket after the T is in place, which adds some additional difficulty. Think it only took me about an hour to figure it out, but I felt very lucky when I finally got it.

Mrmerlin

Otto this IAC is a wear item so it might be time.
NOTE if it sticks it can damage the computer.

Take off the both sides then the center T,
you also need a bright flashlight and a long 1/4 drive extension with 5,6,7, 8
sockets dedicate about 2 hours and you should be good to go

Cosmo Kramer

You may look like you "love" your car too much doing it this way, but I got one out on my old S3 by removing the airbox and MAF, then laying on top of the engine and getting at the clamps from the back.

Avar928

Take off the plenums, center T, airbox and MAF and have someone shine a flashlight through the organ pipes or do it outside on a sunny day and you'll be fine. I've messed with my ISV more than enough times and it's not as bad as it sounds. The only issue you'll have is if the fasteners are oriented in a difficult spot (have long flat heads on hand) and getting the T back on the boot.

You'll probably spend more time getting the T on that boot than anything else. WD-40 works to make it slip across the lip. Be patient about it.

WyattsRide

Like many have said. Removing the T, the Airbox and MAF makes this a pretty easy change of the ISV. BUT, it really is the reinstalling of the T that makes this a real PITA. I did this a couple of years ago. After having to redo this several times I learned some of my own techniques that I used to help me that are hard to describe in a post. I was advised not to use any lubricant on the rubber sleeve. I actually bought a new throttle body sleeve and even cleaned it real well before using it. You can get it on without lube for sure. Then you know you'll have a very good seal.

We can talk about it this weekend or you can give me a call if you want to do this before coming to the PVGP.

killav

This is what I did. I didn't touch the intake pipes. But as stated before, I was able to get to all of the screw clamps. If they are turned the wrong way, the job gets more difficult. It took me all of 30-45 minutes to change out the ISV my 85.