wheres the frikkin EST on this $%@*
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Junior Member
Joined: Jan 2004
Posts: 81
Likes: 0
From: delaware
Car: 85 berlinetta
Engine: lg4
Transmission: 700r4
wheres the frikkin EST on this $%@*
ok, 85 lg4 carbed. anyone know where this thing is on this car?ive done a search, and after readiing pages after pages i know where it is on efi, but i already knew that.any help would be greatly appreciated.
Joined: Mar 2000
Posts: 43,187
Likes: 42
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Well, there's the "ignition control module", which is located in the distributor.
There's the "knock sensor module", which is located on the firewall.
There's the "engine control module", which is located above the passenger footwell.
All combine to provide the "electronic spark timing".
There's the "knock sensor module", which is located on the firewall.
There's the "engine control module", which is located above the passenger footwell.
All combine to provide the "electronic spark timing".
Thread Starter
Junior Member
Joined: Jan 2004
Posts: 81
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From: delaware
Car: 85 berlinetta
Engine: lg4
Transmission: 700r4
i meant the plug you unhook to set the timing on this marvel of GM engineering.sorry if i got confused with the terminology, gettin agravated with this CC crap
Supreme Member

Joined: Jun 2001
Posts: 9,550
Likes: 4
From: Charleston, SC
Car: 91 Camaro Vert
Engine: 02 LS1, HX40
Transmission: 2002 LS1 M6
Originally posted by 87Formula4bbl
Unplug the 4-plug connector on the distributor to disable the advance. Set your timing to specs, plug back in and your done.
Unplug the 4-plug connector on the distributor to disable the advance. Set your timing to specs, plug back in and your done.
nooope
i dont know if that would work or not, but thats NOT the factory designed way to do it.
twistydick:
look on the passenger side fender... there should be a single wire connector with a tan wire going thru it. its a single wire weatherpack connector.... usually towards the back of the fenderwell, but on the fender, just bearly sticking out of the wire harness tubing cover..
unplug it... this disables the advance.
set the timing, then plug it back in and you're set.
Senior Member
Joined: Jul 2002
Posts: 815
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From: Toledo, OH
Car: '87 Formula
Engine: 350
Transmission: Auto
Well, dont know if the '85 uses a different distributor than mine, mines an '87, but for mine the under-hood directions clearly state that that is how its done.
Member
Joined: Dec 2003
Posts: 192
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From: DFW,TX
Car: 1983 G20 Van
Engine: 305 4bbl
Transmission: Possesed 700r4
The factory way to do the advance on a computer carb is to disconnect the 4 pin connector. There is no single plug like the TPI and TBI use. Why the carb doesn't need a RPM signal for the motor to run the injection does.
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Supreme Member
Joined: Jul 1999
Posts: 18,457
Likes: 16
From: Loveland, OH, US
Car: 4
Engine: 6
Transmission: 5
On a 85 car, large-cap HEI, the 4-prong Weatherpak connector is in fact the one you disconnect. Look for it hanging down between the bell housing and the trans tunnel. It exits the distributor at the rear of the housing, about directly opposite the 3-prong primary connector that goes up to the cap.
Senior Member
Joined: Jul 2002
Posts: 815
Likes: 0
From: Toledo, OH
Car: '87 Formula
Engine: 350
Transmission: Auto
Thought so. I know my brother's '85 TPI and his old '89 TBI had the single wire connector, but mine uses the 4-pin connnector on the dist, as I'd assume does his '85 LG4.
Joined: Mar 2000
Posts: 43,187
Likes: 42
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Always helps to ask the question you really need answered... 
Yes, disconnect the flat 4-wire plug from the distributor to the wiring harness. Sometimes it's hard to find because it likes to "hide" amoungst all the occupants of that space.
CCC is a wonderful system. To know it is to love it.
(And, no, I don't have my tongue firmly implanted in my cheek...)

Yes, disconnect the flat 4-wire plug from the distributor to the wiring harness. Sometimes it's hard to find because it likes to "hide" amoungst all the occupants of that space.
CCC is a wonderful system. To know it is to love it.
(And, no, I don't have my tongue firmly implanted in my cheek...)
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