Anyone ever figure out tach jumping problem?
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Junior Member
Joined: Apr 2000
Posts: 47
Likes: 0
From: Eau Claire, WI
Anyone ever figure out tach jumping problem?
I have searched the archives and haven't really come up w/ an answer. Tach that just pegs when started. Fuses are good. Let me know if you know how to fix.
Member
Joined: Sep 2002
Posts: 205
Likes: 1
From: Oak Forest, Illinois
Car: 1996 Camaro
Engine: 3800 V-6
Transmission: 4L60E Automatic
Guy's.........I had the same problem with my 92 Bird.......the tach would jump around after getting over 2000 rpm,s......I changed the ICM = ignition contol module ....in the distributor and the problem went away..........that might be a good place for you to start........good luck.......
Member
Joined: Nov 2002
Posts: 471
Likes: 15
From: Washington State
Car: '84 Berlinetta
Engine: ZZ4
Transmission: BTOD stage 3
Axle/Gears: 3.23 posi disc
I had the same problem, replaced the module, and it seemed to help. I always thought that it might have something to do with the capacitor located on the firewall right behind the dist. I was thinking that the signal was too strong for the tach right off the coil, so a capacitor or something that would reduce the signal in strength but not in quantity would help to even out the tach. Just an idea...
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