aftermarket tach
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Freshman User
Joined: Jul 2002
Posts: 48
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aftermarket tach
I try to install an aftermarket tach on my 86 e-350 460 carb.
After the installation, I start the engine an the tach needle is going crazy!!
Power source is O.K.
Good ground.
Tach signal picked up directly on the tach wire on the distributor (green/yellow).
The reading is almost 1000 rpm to high and unstable. There's a switch on the tach to select the # of cylinder of the engine, and it's set to 8, obviously.
Is my tach signal had to be picked elsewhere in the electrical system?
Thanks for the help.
After the installation, I start the engine an the tach needle is going crazy!!
Power source is O.K.
Good ground.
Tach signal picked up directly on the tach wire on the distributor (green/yellow).
The reading is almost 1000 rpm to high and unstable. There's a switch on the tach to select the # of cylinder of the engine, and it's set to 8, obviously.
Is my tach signal had to be picked elsewhere in the electrical system?
Thanks for the help.
Posting Guru
Joined: Aug 2000
Posts: 1,984
Likes: 2
aftermarket tach
Wally, try spraying the 4-6-8 switch on the tach with wd-40, or an electrical parts cleaner. Then cycle the switch several times. Then make sure it is firmly on the 8 setting.
This is what I did on my Sun Super Tach, when it started doing the same thing you describe, and it fixed it.
Good luck.
Don
This is what I did on my Sun Super Tach, when it started doing the same thing you describe, and it fixed it.
Good luck.
Don
