Question
Thread Starter
Racer
Joined: Jun 2006
Posts: 401
Likes: 0
From: FL
Question
This is driving me crazy, so I could use some help...I've got a 98 coupe. There's a small tube/hose (smaller around than a pencil) plugged into the left side of the coupler that joins the air duct to the throttle body. What is that exactly, and what happens if it isn't there? I was looking at replacing the stock accordion coupler with a smooth one and I haven't seen any pictures of smooth couplers with that hose attached. Any guidance is greatly appreciated.
Racer
Joined: Dec 2003
Posts: 448
Likes: 1
From: Naples Fl
Originally Posted by acerider
This is driving me crazy, so I could use some help...I've got a 98 coupe. There's a small tube/hose (smaller around than a pencil) plugged into the left side of the coupler that joins the air duct to the throttle body. What is that exactly, and what happens if it isn't there? I was looking at replacing the stock accordion coupler with a smooth one and I haven't seen any pictures of smooth couplers with that hose attached. Any guidance is greatly appreciated.
Race Director
Joined: Jul 2004
Posts: 16,794
Likes: 62
From: Lake Havasu City, AZ
It is the IAT (intake aire temperature sensor) newer years have it integrated into the MAF ( mass airflow meter)
there are posts on repositioning them....
try an advanced search keywords IAT relocate
search any date, tick current and archives, highlight C5 Corvette 1997-2004
You will find an number of threads on IAT re location...
there are posts on repositioning them....
try an advanced search keywords IAT relocate
search any date, tick current and archives, highlight C5 Corvette 1997-2004
You will find an number of threads on IAT re location...
Team Owner
Joined: May 2001
Posts: 36,836
Likes: 243
From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
Fuel pressure regulator vacuum tube. It should run between the coupler accordion and the FP regulator, not the throttle body.
Last edited by LoneStarFRC; Jun 21, 2006 at 05:28 PM.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Yep!! 
There is a kit that you can purchase that re-routes the vacuum supply to the PCV valve fitting . Its called a recurved kit and will (supposedly) re curves the fuel pressure regulator so that it leans the air fuel mixture out for an improved AIR/FUEL ratio. It will eliminate the connection at the accordion tube. look on the Ecklers web Site for it. That is where I got mine for my 98 coupe!
BC
There is a kit that you can purchase that re-routes the vacuum supply to the PCV valve fitting . Its called a recurved kit and will (supposedly) re curves the fuel pressure regulator so that it leans the air fuel mixture out for an improved AIR/FUEL ratio. It will eliminate the connection at the accordion tube. look on the Ecklers web Site for it. That is where I got mine for my 98 coupe!BC
