Tachnometer problem! What's wrong with it?
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Joined: Oct 1999
Posts: 566
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From: New Britain, CT, U.S.A
Car: '87 IROC
Engine: LT1 350
Transmission: 700-R4
Tachnometer problem! What's wrong with it?
My tach in the guage cluster went weird today. My car only has about 9,000 miles on it so it's not old age. My tach was fine when all of a sudden it's now always pegged at 7,000 RPM. Doesn't move, only when cranking the car. The battery died the day before this happened. The tach was also connected to an MSD 6AL, if that makes any difference? Is there a way to fix the tach, cuz I really don't wanna replace the cluster.
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Joined: Mar 2002
Posts: 1,654
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From: Lower Salford, PA
Car: 1987 Camaro Z-28
Engine: 6.3L Victor EFI
Transmission: Tremec TKO 600
Axle/Gears: Moser 9"/4.11 Trac-Lok
It sounds like you may have fried the tach. You don't have to replace the whole cluster, the tach itself can be replaced. I ended up taking my tach out & installing a 5" Autometer. It is much more accurate & is triggered right off the MSD tach terminal. If the stock tach is not hooked correctly to the MSD it can be fried.
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Joined: Jun 2001
Posts: 3,175
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From: Bedford, Tx
Originally posted by Ricktpi
It sounds like you may have fried the tach. You don't have to replace the whole cluster, the tach itself can be replaced.
It sounds like you may have fried the tach. You don't have to replace the whole cluster, the tach itself can be replaced.
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