Bingo. always the first thing to check on a CFI...especially w/those symptoms.
'84 Vette problem continues
Thread Starter
Intermediate
Joined: Jun 2011
Posts: 32
Likes: 0
'84 Vette problem continues
This problem has been going on a while. I posted my problem several months ago and tried all suggestions. Seems when I put my '84 under a load (passing, going up steep hills, etc) the car studders/falters. I let off the gas and it quits. Here's what I've done: New Bosch fuel pump and filter, new plugs, new dist cap/rotor. New Map sensor, tpi sensor, radiator sensor, oxy sensor.......Tried running cleaner through the system, just cant' get rid of that stumble when accelerating. I even installed a new cat converter. Any suggestions? Seems like it's not advancing timing correctly upon acceleration? How would I know? It's embarrassing when I try to pass a 1970 Pinto and struggle to get around!!! Help!!!!
Team Owner
Joined: Aug 2004
Posts: 21,543
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From: Park City Utah
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Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
Thread Starter
Intermediate
Joined: Jun 2011
Posts: 32
Likes: 0
Just changed out plug wires.......no help. Will check egr. Someone above mentioned something about "throttle shaft vacuum leaks"...??? And something about "remove the vacuum and plumb tb to test"...Can you give me a little more detail on what to do here? And how would I know if my module is acting up?
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
Just changed out plug wires.......no help. Will check egr. Someone above mentioned something about "throttle shaft vacuum leaks"...??? And something about "remove the vacuum and plumb tb to test"...Can you give me a little more detail on what to do here? And how would I know if my module is acting up?
Burning Brakes
Joined: Feb 2013
Posts: 1,173
Likes: 152
From: norway
Race Director
Joined: Aug 2007
Posts: 11,889
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From: Whitefish Falls Ontario
St. Jude Donor '08-'09
Lots of good info in Google search, but also miss info as this link shows. No way for an 84. This was just down the page from your link..
https://www.google.no/search?q=1984+...%3B1000%3B1316
https://www.google.no/search?q=1984+...%3B1000%3B1316
Burning Brakes
Joined: Feb 2013
Posts: 1,173
Likes: 152
From: norway
Lots of good info in Google search, but also miss info as this link shows. No way for an 84. This was just down the page from your link..
https://www.google.no/search?q=1984+...%3B1000%3B1316
https://www.google.no/search?q=1984+...%3B1000%3B1316
Burning Brakes
Joined: Feb 2013
Posts: 1,173
Likes: 152
From: norway
New Bosch fuel pump and filter, new plugs, new dist cap/rotor. New Map sensor, tpi sensor, radiator sensor, oxy sensor.......Tried running cleaner through the system !!!!! se if the injektors are leaking = o- rings 
se if the injektors are leaking = o- rings
Pro
Joined: Jul 2002
Posts: 703
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From: Milwaukee Wi