1984 egr delete question
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
Got you. It makes sense since it's vacuum operated and electronically controlled. If I were to lightly press up on the egr diaphragm at idle it surges. That takes very, very little force. Much more than when it is off. Guess that means I have something else to add to the list.
It sounds like vacuum is "leaking" through your control solenoid. If you had full manifold vacuum, the egr would be OPEN...car would likely stall. Since the diaphragm moves up with such little effort, it's as if you have a partial vacuum pulling on the diaphragm, when at idle, there should be none. 
Thread Starter
Instructor
Joined: Mar 2018
Posts: 128
Likes: 1
From: airmont new york
Thread Starter
Instructor
Joined: Mar 2018
Posts: 128
Likes: 1
From: airmont new york
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
Get a buddy. Tie a waterski rope to the hitch of your 4x4. Go have a blast! 
Yep I've been skiing all my life. Used to ski at Mt Wachusett when I was a kid!
Now I work at Snowbird. What a change.
Yep I've been skiing all my life. Used to ski at Mt Wachusett when I was a kid!
Now I work at Snowbird. What a change.
Thread Starter
Instructor
Joined: Mar 2018
Posts: 128
Likes: 1
From: airmont new york
Pro
Joined: Jan 2003
Posts: 706
Likes: 47
From: Denver Colorado
On my 1984 I ported the Cross-Fire intake, removed the EGR "dong" from the plenum, installed a commercial egr block off plate and went with later Corvette aluminum heads and a commercial computer chip upgrade (Hyper-chip I think). I ran it hard for years with absolutely no ill effects. My compression would have been higher than stock due to the smaller chambers on the aluminum heads vs stock iron. I did use premium gas. You should be just fine.
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Thread Starter
Instructor
Joined: Mar 2018
Posts: 128
Likes: 1
From: airmont new york
On my 1984 I ported the Cross-Fire intake, removed the EGR "dong" from the plenum, installed a commercial egr block off plate and went with later Corvette aluminum heads and a commercial computer chip upgrade (Hyper-chip I think). I ran it hard for years with absolutely no ill effects. My compression would have been higher than stock due to the smaller chambers on the aluminum heads vs stock iron. I did use premium gas. You should be just fine.
hey, thanx for all the replies..I bought this car about 7 months ago.It was totaly neglected..I have been rebuilding evey system in the car..
all sensors changed
fuel pump (1985)
rebuilt transmission for barret transmissions
master cylinder
brake lines
IAC,s
tires
4 wheel alignment
bushings
shocks
power steering lines
ac eliminator pulley
serpintine belt
full tune up
and the list goes on and on..
working on moldings and door pins now.....ughhhhh