s-w tach

jagrolet · #1 (**permalink**) 05-18-2009, 01:50 PM

Would anyone know the test procedures for a stewart warner electric tach?

Mine worked great for awile,now just does odd movements. 12 v input and ground are correct,and continuity to dist.from pulse terminal correct.

What is the input signal? ac dc voltages?

Thanks
Wally

MaSnaka · #2 (**permalink**) 05-18-2009, 05:05 PM

I would contact the tech support at Stewart Warner. They helped me with an oil pressure gauge. 915-593-1965 xt 154

Good luck,
John

Double Venom · #3 (**permalink**) 05-18-2009, 07:43 PM

Hmm,
John has good advice- Is there an MSD box involved?
DV

jagrolet · #4 (**permalink**) 05-19-2009, 03:29 PM

it is a gm style hei adapted to ford,a pulse port is provided,i am kind of sure it is the tach,it is the 3rd bad one at my shop in the last 4 years,but i would like to be convinced before i take it out of my dash.

thanks
waly

jagrolet · #5 (**permalink**) 05-19-2009, 03:33 PM

note

S-W tech dept is no more

MaSnaka · #6 (**permalink**) 05-20-2009, 12:25 AM

I guess I can erase that phone number. I spoke with them but it was a few years ago.

John