need some TPI help
Thread Starter
Instructor
Joined: Sep 2004
Posts: 122
Likes: 0
From: Salt Lake City UT
need some TPI help
okay so i bought some straight pipes for the vette. no cats, no mufflers. it seemed to running right the first few days then i noticed when i'm at a stop light the idle fluctuates but will eventually return to normal (this happens everytime you come to a stop. i've got the little black emissions box capped off where the hose went that lead to the center cat. can anybody explain this.
by the way the car has a mild cam with egr block off and is an automatic
by the way the car has a mild cam with egr block off and is an automatic
Le Mans Master
Joined: Jan 2003
Posts: 5,858
Likes: 7
From: Santa Maria CA
That's what I would do first.
Incase you don't know how.
https://www.corvetteforum.com/techti...D=55&TopicID=2
You need to unplug the EST connector after you disconnect the IAC one. The tech tip leaves that out.
Le Mans Master
Joined: Jan 2003
Posts: 5,858
Likes: 7
From: Santa Maria CA
Originally Posted by rodj
"You need to unplug the EST connector "
Only need to unplug EST to set dist timing not IAC.
Only need to unplug EST to set dist timing not IAC.
That would be the EST connector.
Drifting
Joined: May 2003
Posts: 1,979
Likes: 48
From: Lakeport CA
Interesting... I'll have to reset everything sometime with that detail in mind. I've had a small issue w/ idle fluctuation for years but there is one symptom that has baffled me.
It only does it while the car is moving & either clutch in or coasting in neutral. As soon as I come to a stop the idle drops to where it should be & stays there.
It only does it while the car is moving & either clutch in or coasting in neutral. As soon as I come to a stop the idle drops to where it should be & stays there.
