My tach started acting weird…
Thread Starter
Le Mans Master
Joined: Jan 2003
Posts: 6,575
Likes: 1
From: Tuttle OK
Cruise-In VIII Veteran
My tach started acting weird…
…since it started cooling off this winter. When I start my car in the morning, the tach isn’t working. Let the car warm for a few minutes and it’s spot on again and doesn’t falter ‘till the next morning or after work (if it’s cold enough outside)...
WTF... filter?, board?, heating pad before I start her up?
WTF... filter?, board?, heating pad before I start her up?
Racer
Joined: Jan 2005
Posts: 492
Likes: 0
From: Birmingham AL
Just a guess but I've had tach issues not quit like yours but similar response. I found it to be the tach filter (I'm assuming you have the electrical tach that comes from the dist). Try fiddling with that, maybe take a hair dryer to it before you cold start the car one time to test the theory.
Drifting
Joined: Oct 2003
Posts: 1,330
Likes: 1
From: Kerrville Texas
Think it's just cold. I recently went through some issues with my tach and part of the solution was replacing the Tach Filter.
My tach did the same thing the other morning and since my filter is new I would guess it was just sticky because it was cold.
Kona
My tach did the same thing the other morning and since my filter is new I would guess it was just sticky because it was cold.
Kona
Melting Slicks
Joined: May 1999
Posts: 2,897
Likes: 0
From: Moon Township PA
Since you didn't put the year in ( 
) I will guess that you don't have the mechanical tach?
Try this link to the faq section.
http://www.corvettefaq.com/c3/RebuildSpeedo.htm
Pretty good article on tach and speedo issues.
Gary
) I will guess that you don't have the mechanical tach? Try this link to the faq section.
http://www.corvettefaq.com/c3/RebuildSpeedo.htm
Pretty good article on tach and speedo issues.
Gary
Le Mans Master
Joined: Feb 1999
Posts: 8,351
Likes: 75
From: Tampa Bay FL
If you decide to replace the tach filter, this is a tach filter currently on eBay. The $20 price is the going rate for used replacements (I believe I purchased my used tach filter from this guy):
http://cgi.ebay.com/ebaymotors/Tach-...spagenameZWDVW
http://cgi.ebay.com/ebaymotors/Tach-...spagenameZWDVW
Thread Starter
Le Mans Master
Joined: Jan 2003
Posts: 6,575
Likes: 1
From: Tuttle OK
Cruise-In VIII Veteran
Thanks all...
and Gary...while it's in my profile, just like yer '72, I did mention filter..thanks to you as well though.....
Originally Posted by GaryS
Since you didn't put the year in ( )
)and Gary...while it's in my profile, just like yer '72, I did mention filter..thanks to you as well though.....
