1985... hanging throttle!
Thread Starter
Team Owner
Joined: May 2002
Posts: 24,337
Likes: 25
From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
1985... hanging throttle!
My vette has been doing this more and more lately. I'm pretty sure its mechanical, not a vacuum leak or electronic gremlins, since I can duplicate it by feathering the throttle just right. Bumping the throttle brings it back down.
It's gotta be the TB or the cable, but all of it seems to move freely. I'm thinking the vaccuum may be tugging on tb blades and causing them to bind. It hangs around 2400 rpm or so.
Just curious if this is a common occurence, if I need a new TB or..?
It's gotta be the TB or the cable, but all of it seems to move freely. I'm thinking the vaccuum may be tugging on tb blades and causing them to bind. It hangs around 2400 rpm or so.
Just curious if this is a common occurence, if I need a new TB or..?
Race Director
Joined: Sep 2003
Posts: 16,838
Likes: 341
From: Database Error Indiana
Its real common for the throttle shaft to wear out the surface it rides on. It gets sloppy. This keeps the throttle blades from closing properly. Gives an inconcistent throttle return and idle. It can be rebuilt.
DW
DW
Team Owner
Joined: Jan 2003
Posts: 20,322
Likes: 248
From: Summerland B.C. Canada
Originally Posted by Spankyellow
Its real common for the throttle shaft to wear out the surface it rides on. It gets sloppy. This keeps the throttle blades from closing properly. Gives an inconcistent throttle return and idle. It can be rebuilt.
DW
DW
Check the drivers side shaft bore. It's probably oval like mine 
Race Director
Joined: Dec 2004
Posts: 15,025
Likes: 2
Unhook your cables one at a time. Mine just happened to be the first one I pulled. The cruise cable.
There is also a bunch of gunk that builds up behind the plates. You might want to get a flashlight, crack the throttle and have a look.
Go through all of the simple fixes before you throw any money at it.
There is also a bunch of gunk that builds up behind the plates. You might want to get a flashlight, crack the throttle and have a look.
Go through all of the simple fixes before you throw any money at it.
