tach problem on my 78
Drifting
Joined: Oct 2003
Posts: 1,330
Likes: 1
From: Kerrville Texas
I had this same problem last month. Turns out the Tach Filter was bad.
Look near your distributor it will be mounted on the intake it is silver about two inches long with one wire going in and one wire coming out.
Not sure how you test them but that was the culprit in my case. They are about $50 in the catalogs or you can search for Rodney Dickman on the web and he sells them for $20 plus $5 shipping thats where I bought mine.
You can even do a search on the forum I think at one time someone posted plans on how to make one.Hope this helps.
Kona
Look near your distributor it will be mounted on the intake it is silver about two inches long with one wire going in and one wire coming out.
Not sure how you test them but that was the culprit in my case. They are about $50 in the catalogs or you can search for Rodney Dickman on the web and he sells them for $20 plus $5 shipping thats where I bought mine.
You can even do a search on the forum I think at one time someone posted plans on how to make one.Hope this helps.
Kona
Drifting
Joined: Nov 2003
Posts: 1,634
Likes: 4
From: Northern NJ
St. Jude Donor '04 & '05
Just use a jumper wire across the filter to test it. If the tach starts working, then the filter is probably bad. If not, then you will have to look elsewhere.
Good Luck!
Good Luck!
Pro
Joined: Mar 2004
Posts: 584
Likes: 0
From: Okemos MI
Melting Slicks
Joined: Oct 1999
Posts: 2,581
Likes: 14
From: Tolar Texas
Originally Posted by fastback01
Good responses..........esp the radio shack advise..........
http://www.corvetteforum.net/c3/eddlemsg/tachfilter.gif
I had to build one once.
Tach filter. Wire broke off. Need replacement advice.
http://forums.corvetteforum.com/show...highlight=tach
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Thread Starter
Melting Slicks
Joined: Aug 2004
Posts: 2,704
Likes: 6
From: Toronto
thanks for the tach help
With all the advice out there from everyone, found the problem a fried wire leading from the filter, rewired it and soldered back, works like a charm. Thanks to all you guys agin for the advice and help.
Instructor
Joined: Jun 2004
Posts: 233
Likes: 0
From: algonac michigan
Originally Posted by ACECO
Here's a schematic for the tach filter.
Parts can be had at Radio Shack, or any electronics house.
Hope this helps. Good Luck!
Parts can be had at Radio Shack, or any electronics house.
Hope this helps. Good Luck!
went there today dont have 100pf cap and they cant get it
they used to be good.
R.
