tach misreading
02-27-2003, 04:07 PM
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Car: 91 Z-28
Engine: 420 sbc
Transmission: T56
Axle/Gears: 12 bolt/4.10 gears
tach misreading
my tachometer is misreading and no one around here will calibrate it. Its a couple 100 rpms off at idle, but by the time i get to redline its off by about 1000 rpm. Does any one know how to calibrate them or know of a place i can send it. The dealership wants 300 bucks to exchange it for another one!
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