Jumpy Tach - Electronic HEI distrib
Thread Starter
Racer
Joined: Jul 2005
Posts: 420
Likes: 0
From: Yerington NV
Jumpy Tach - Electronic HEI distrib
All of a sudden, when I finally get my motor running/idling smoothly, the tach starts acting up!!!
At first I had NO TACH at all, but after resetting the TACH connector at HEI distributor, the tach runs but is jumpy .... around .5-1k with a smooth idling motor .....
Other than resetting the electronic connector behind dash, are there any other things I should check ?
P.S - Also have a MSD module, that has an additional "low voltage" green tach lead, that documentation indicates is 5v (vs 12v on one coming out of distrib) should I use that one instead?
At first I had NO TACH at all, but after resetting the TACH connector at HEI distributor, the tach runs but is jumpy .... around .5-1k with a smooth idling motor .....
Other than resetting the electronic connector behind dash, are there any other things I should check ?
P.S - Also have a MSD module, that has an additional "low voltage" green tach lead, that documentation indicates is 5v (vs 12v on one coming out of distrib) should I use that one instead?
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Joined: Sep 2006
Posts: 78
Likes: 0
From: Nashville NC
All of a sudden, when I finally get my motor running/idling smoothly, the tach starts acting up!!!
At first I had NO TACH at all, but after resetting the TACH connector at HEI distributor, the tach runs but is jumpy .... around .5-1k with a smooth idling motor .....
Other than resetting the electronic connector behind dash, are there any other things I should check ?
P.S - Also have a MSD module, that has an additional "low voltage" green tach lead, that documentation indicates is 5v (vs 12v on one coming out of distrib) should I use that one instead?
At first I had NO TACH at all, but after resetting the TACH connector at HEI distributor, the tach runs but is jumpy .... around .5-1k with a smooth idling motor .....
Other than resetting the electronic connector behind dash, are there any other things I should check ?
P.S - Also have a MSD module, that has an additional "low voltage" green tach lead, that documentation indicates is 5v (vs 12v on one coming out of distrib) should I use that one instead?
Thread Starter
Racer
Joined: Jul 2005
Posts: 420
Likes: 0
From: Yerington NV
I am going to put the old stock tach filter back on as a test .... this one is one of the Ecklers replacements .... but my old one still works, just looks like crap and I had to solder one of the wires .....
Good tester though ..... I think I have already had ecklers replace it once .... guess it could be bad again!!!!
SORRY ECKLERS - It was a MADVET purchase!!!! Returning it and will get another one from somewhere else, as this was second one that didn't work right!
Good tester though ..... I think I have already had ecklers replace it once .... guess it could be bad again!!!!
SORRY ECKLERS - It was a MADVET purchase!!!! Returning it and will get another one from somewhere else, as this was second one that didn't work right!
Last edited by tomard; Oct 19, 2007 at 07:49 PM.
