New Poster need help
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Junior Member
Joined: Jun 2015
Posts: 12
Likes: 0
From: Bell,Fl
Car: 91 Camaro
Engine: 305
Transmission: Automatic
New Poster need help
This is my first post; I am the proud owner of a ‘91 305 V8 RS that is having timing/running issues! With the EST unplugged I have it timed to 6’ degrees TDC like I have read it is supposed to be, however when I plug the EST back in it throws my timing all the heck. What am I doing wrong? Any help in this matter would be greatly appreciated. 
Joined: Jul 2000
Posts: 1,519
Likes: 18
From: Fort Myers, FL
Car: 91 Firebird
Engine: 6.0
Transmission: T56
Axle/Gears: 3.73
Re: New Poster need help
welcome to TGO! Glad that you found us
What you are seeing is normal
you have to disconnect the est wire to take the computer out of the the mix. When you plug it back in, the computer is controlling the timing. If I recall, the computer is giving it about 20* or so of timing at idle.
good luck with your new project!
-jason
What you are seeing is normal
you have to disconnect the est wire to take the computer out of the the mix. When you plug it back in, the computer is controlling the timing. If I recall, the computer is giving it about 20* or so of timing at idle.
good luck with your new project!
-jason
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