i dont have the answer but i am very interested
question about my TB
Thread Starter
Safety Car
Joined: Nov 2000
Posts: 3,939
Likes: 1
From: Summerville SC
question about my TB
I took the tb off to clean it and the butterfly is open. Is this normal? It's only open about 1/4in. Should it be closed? If it is bad what kind is the best to replace it with.
Thanks
Marty
Thanks
Marty
Drifting
Joined: Jan 2004
Posts: 1,987
Likes: 0
From: Orlando FL
Cruise-In VI Veteran
im no expert, but i dont see why it would be open when its off the car. if it is supposed to be... then thats something new i learned today!!
if the TB was stuck open, you would def. know though.
if the TB was stuck open, you would def. know though.
Melting Slicks
Joined: Dec 2004
Posts: 2,655
Likes: 635
From: Dallas TX
Im no expert on the vette electronic throttle, but I would guess that it maybe has a spring in it that holds it open a bit when no power is going to it so that starting is easier, then the computer and the servo take hold of it and overpower the spring and close it down a bit to get the right idle. Make sense.
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Supporting Tuner
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From: ================== Houston, Texas www.englandgreen.com ================== Necessary Evil™ __________
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St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14
Slightly open is normal. Nothing to worry about.
The TB is "drive by wire". When electricity is applied (when it is reconnected) it will be closed.
EG
The TB is "drive by wire". When electricity is applied (when it is reconnected) it will be closed.
EG
Safety Car
Joined: Nov 2003
Posts: 4,979
Likes: 5
From: San Diego, CA "leaf" "tee" "e"
I can't say if it's normal or not, but I'd suggest checking out the bearing. It's supposed to be swaged (crimped) on a part of the tube to keep the bearing/bar inside of it from sliding side-to-side. The crimp may be opening up. If the bearing/bar slides, the throttle plate can be prevented from closing all the way. It's really easy to fix. The early FAST 90mm throttle bodies didn't come swaged, and many owners just crimped the tube themselves, recommended the fix to FAST, and now FAST swages all their throttle bodies.
Eugene
Eugene
Pro
Joined: Sep 2003
Posts: 731
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From: Calgary Alberta
It's normal. I've had mine off numerous times, and also have a Shaner S2 (exquisite TB by the way) that has had all of the stops adjusted and properly set. Both TB's are open a crack because of the drive by wire set-up. 