Tach works randomly or not at all
#1
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Location: St.George Utah
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Car: 89' Iroc
Engine: 350 TPI
Transmission: 700R4
Tach works randomly or not at all
in my 89 Iroc, my tach will just peg at like 5600 and wont move for a few days, then if i get into it, the tach will come back down and work just fine. Then it will just flip up and stop working, although it doesnt affect the performce of the engine, i would just like to have it there and working.
#3
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Car: '86 SC
Engine: '88 2.8L
Transmission: 700R4
My tach was going crazy for a while, then I started getting a trouble code for the EST... replaced ignition module, all problems solved. Maybe yours is going?
#7
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Car: 89' Iroc
Engine: 350 TPI
Transmission: 700R4
checked body gorunds, now i just need to pull the cluster back out, and pull the tach and check the actual board for breaks in it.
Thanks for the suggestions guys!:hail:
Thanks for the suggestions guys!:hail:
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#8
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Car: 1991 Z-28
Engine: Can you say stroke?!?!
Transmission: 700-r4
Axle/Gears: 3.42
Also check the wire connecting to the coil and the ignition module. I had a similar problem and found out the problem was that one wires was cut and the actual wire was exposed. Must have been arcing to something but after changing it out, my tach never acted up again.
#10
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Car: 1991 Z-28
Engine: Can you say stroke?!?!
Transmission: 700-r4
Axle/Gears: 3.42
It was the set that ran from the Module to the Coil. I want to say they were red and white. The white one was exposed. Hope that helps.
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