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H/O HEI could, cap, rotor messing with tachometer

BennieG

New member
Joined
May 18, 2018
Messages
2
Location
Winnipeg, MB
Corvette
1989 Blue Convertible
H/O HEI coil, cap, rotor messing with tachometer

I installed a Hypertech Powercoil kit on my '89. The tach started jumping all around when I first started it. We installed a new tach filter. Now it's stop jumping around but the tach won't read above 3000 RPM. Anyone else have this problem? Does anyone have a fix?
 

Hib Halverson

Technical Writer for Internet & Print Media
Joined
Jan 10, 2001
Messages
13,452
Location
CenCoast CA
Corvette
71 04 12 19
Can you describe in detail what all this kit replaced during the installation?
 

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