How do you replace the Idle Stabilizer Valve on an 86S?
04-29-2006, 09:23 AM
#16
Burning Brakes
Join Date: Oct 2004
Location: Suburban St. Louis in Illinois.
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Looks like you only removed the side plenums. You see the large "T" section in the center of the intake pipes in your pic ?? THAT comes OFF the throttle housing by unscrewing a large clamp securing a large rubber "boot" to the center "T" section of your intake pipes. IF you remove this section...you will be able to access the IAC connection to the throttle body, and "should" be able to get the IAC valve itself loose and remove it . It will help if you have already removed the Air Filter Box, and pulled the MAS out of the inlet to the throttle body. This way, you will be able to effectively work on the IAC and most (if not all) the hoses that are covered and inaccessable under the intake piping. 
10-18-2021, 09:10 PM
#17
Rennlist Member
Resurrecting this thread...question....is it possible to replace the small elbow tube that goes from the ISV to the throttle body without removing the intakes? I can't figure out how to do it and the one in there presently has been clamped and re-clamped a few times and I'd like to change it out when I replace the ISV....high idle when warm issue....
thanks
matt.
thanks
matt.
10-20-2021, 02:27 PM
#18
Rennlist Member
I was able to do this job. When I was putting the manifold back together I had the hose clamp access available when taking off the T tube. I just did this about a month ago.
10-20-2021, 04:38 PM
#19
Rennlist Member
thanks
matt.
10-20-2021, 07:24 PM
#20
Rennlist Member
Matt:
I had the top one that went to T tube facing to the front of the engine and the one that connects to the throttle body facing toward right front fender. I used a 6mm sized hose clamp so I could a 1/4 drive and 6mm socket to remove. I only had to take the T piece out of the throttle body to work on.
I had the barb brake from the throttle body and had to JWELD it back in so I had to remove the elbow.
Hope that helps.
David
I had the top one that went to T tube facing to the front of the engine and the one that connects to the throttle body facing toward right front fender. I used a 6mm sized hose clamp so I could a 1/4 drive and 6mm socket to remove. I only had to take the T piece out of the throttle body to work on.
I had the barb brake from the throttle body and had to JWELD it back in so I had to remove the elbow.
Hope that helps.
David
10-20-2021, 07:28 PM
#21
Rennlist Member
Matt
Sorry the one that connects to the ISV I had that hose clamp pointing up. I did not unhook the top breather tube that goes into the T.
Sorry the one that connects to the ISV I had that hose clamp pointing up. I did not unhook the top breather tube that goes into the T.
10-20-2021, 10:19 PM
#22
Rennlist Member
Strange...the little elbow piece that is attached to the throttle body...that clamp is facing front of the car....One thing I have done in the past when I replace the ICV is go in from the back....I try not to take the center T out when I can but it'll be part of the disassembly when I get in there to replace the ICV (again)....thanks for the help!
matt.
matt.
