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87-88 4cyl factory tach?


85_Ranger4x4

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Joined
Aug 7, 2007
Messages
34,696
City
SW Iowa
Vehicle Year
1985
Engine
Transmission
Manual
Been fighting putting a factory tach in my truck. I got it 5 years ago from a loaded '88. I always thought it was a V6 truck but the tach isn't acting like it. For the life of me I can't remember checking. With my converter module bypassed it reads 2x engine speed, with my 3/4 multiplier (to make a V6 tach read correctly with a V8) connected it is 1.5x engine speed.

If so any way to adapt it to V6 or tell which it is for sure?

Edit: They did make 4cyl tachs. So far I am 2 for 2 for 6cyl tachs reading like a 4cyl tach.
 
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