ISC boost leak

[AndrewG]

I ran a boost leak test on my car today. Found a leak coming from the ISC. I put a new o ring on it but I still have the same leak. Is there another way of fixing that? Has anyone us run across this? I searched and it looked like everyone has replaced the o ring and been ok. I have got through 3 o rings and I still have the leak.

 

[Vegas Smith]

I fixed my leak by also adding grey rtv.

 

[AndrewG]

I fixed my leak by also adding grey rtv.

Did you just pull it off and add RTV where the o ring sits? I thought about doing it that way but it seems little rigged.

 

[Vegas Smith]

Yep, that's exactly what I did and it fixed the problem. If it's rigid then you probably need a new gasket.

 

[spyderdrifter]

Are you sure you have the proper o-ring? Is there any physical damage on the ISC motor or the mating surface on the throttle body?

 

[AndrewG]

Are you sure you have the proper o-ring? Is there any physical damage on the ISC motor or the mating surface on the throttle body?

My original ISC had a crack in it so I replaced it and it came with a new o ring. That leaked, the o ring from the old one leaked and an o ring out of my o ring kit leaked. I put grey RTV on it last night so we will see today if the leak is gone.

 

[92AWDHX40]

that's good I keep a few of those on hand just in case they fail.

 

[AndrewG]

They grey RTV worked.