Tachometer Issue - ZR-1 Net Registry Forums

Dynomite · 03-24-2024

Tachometer on 1990 ZR1 quits once in a while when driving.
Needle drops as if ignition key is turned off to less than zero.
If I turn the ignition key on (engine off) the tachometer needle does not go up to zero like normal indicating a bad connection.

Seems like a bad connector on instrument cluster since the tachometer function often returns to normal zero when ignition key is turned on and tachometer will then function normally for a while.

03-24-2024	#1
Dynomite Join Date: Aug 2009 Location: South Dakota/California Posts: 3,788	Tachometer Issue Tachometer on 1990 ZR1 quits once in a while when driving. Needle drops as if ignition key is turned off to less than zero. If I turn the ignition key on (engine off) the tachometer needle does not go up to zero like normal indicating a bad connection. Seems like a bad connector on instrument cluster since the tachometer function often returns to normal zero when ignition key is turned on and tachometer will then function normally for a while. __________________ Left Clickable links -Solutions- LT5 Modifications/Rebuild Tricks Low Mileage ZR-1 Restoration 1990 Corvette (L98) Modifications LT5 Eliminated Systems LT5 Added Systems LT5/ZR-1 Fluids 1995 LT5 SPECIFIC TOP END REBUILD TRICKS Last edited by Dynomite; 03-25-2024 at 12:43 AM.