7.3 idi tach help?
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7.3 idi tach help?
I swaped a 94 7.3 idi into my 84 that had a tach that ran off the alternator. I was wondering if I could use the factory tach sensor off the 94 and wire it into the aftermarket gauge?
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From: Muskegon, MI (home)
I too have an aftermarket tach in my 84, it uses the alternator pickup. I remember reading about how they work, it picks up a certain signal from the alternator. Can't remember exactly what, my guess is it won't work. You could temporarily hook it up and try it I suppose, see what happens.
i ain't rite
Joined: Mar 2005
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From: Marlboro Mental Hospital.
if i remember correctly the stock tach reads off a magnetic pickup on the timing gear. 1 revolution on the gear reads one revolution on the tach sensor. the alternator style tach reads different and will not work.
maybe contact the tach manufacturer and see if there is a difference between the reading and how it will work switching from a 1G and a 3G alternator
maybe contact the tach manufacturer and see if there is a difference between the reading and how it will work switching from a 1G and a 3G alternator
Postmaster
Joined: Feb 2003
Posts: 3,441
Likes: 5
From: Muskegon, MI (home)
if i remember correctly the stock tach reads off a magnetic pickup on the timing gear. 1 revolution on the gear reads one revolution on the tach sensor. the alternator style tach reads different and will not work.
maybe contact the tach manufacturer and see if there is a difference between the reading and how it will work switching from a 1G and a 3G alternator
maybe contact the tach manufacturer and see if there is a difference between the reading and how it will work switching from a 1G and a 3G alternator
Postmaster
Joined: Dec 2011
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Dakota Digital makes adapters which will work with our sensors and standard tachometers.
The signal coming out of the factory IDI tach sender is a small AC signal at 53 pulses per rev.
So your adapter must be able to handle 53 pulses per rev and divide it accordingly.
The signal coming out of the factory IDI tach sender is a small AC signal at 53 pulses per rev.
So your adapter must be able to handle 53 pulses per rev and divide it accordingly.
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