91 erratic tach
Thread Starter
Drifting
Joined: Sep 2009
Posts: 1,761
Likes: 1,504
From: Willis, tx
91 erratic tach
My 91 tach shows 4,000 rpm at idle and pegs out above an idle. Occasionally the tach doesn't work at all then suddenly pegs out. I suspect a ground issue, where do I start looking. From the 60's through the 80's I drove C2 Corvettes but I havn't owned one since 1983. I really like this C4 6 speed convertible.
Safety Car
Joined: Jan 2004
Posts: 3,783
Likes: 15
From: Northern California
Replace the "Tach Filter" White wire located on the driver side of the distributor. http://forums.corvetteforum.com/1562973606-post1.html
Last edited by GKK; Sep 3, 2009 at 11:01 AM.
Pro
Joined: Mar 2008
Posts: 579
Likes: 2
From: High Bridge New Jersey
It's
My 91 tach shows 4,000 rpm at idle and pegs out above an idle. Occasionally the tach doesn't work at all then suddenly pegs out. I suspect a ground issue, where do I start looking. From the 60's through the 80's I drove C2 Corvettes but I havn't owned one since 1983. I really like this C4 6 speed convertible.
Le Mans Master
Joined: Aug 2007
Posts: 8,735
Likes: 412
From: WV
According to 3 different parts sites I went to the tach filter only went into cars up to 89, then theres no listing for them, see below...WW
http://www.ecklers.com/product.asp?p...7&dept_id=1135
http://www.ecklers.com/product.asp?p...7&dept_id=1135
Safety Car
Joined: Mar 2005
Posts: 4,723
Likes: 11
From: Winnipeg Manitoba, Canada
I replaced the one in my '90 with a 92' cluster and removed the filter. The tach is pretty bang on now.
Pro
Joined: Mar 2008
Posts: 579
Likes: 2
From: High Bridge New Jersey
They
According to 3 different parts sites I went to the tach filter only went into cars up to 89, then theres no listing for them, see below...WW
http://www.ecklers.com/product.asp?p...7&dept_id=1135
http://www.ecklers.com/product.asp?p...7&dept_id=1135
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
Pro
Joined: Mar 2008
Posts: 579
Likes: 2
From: High Bridge New Jersey
For
Also I think you need to swap out the center section (speedo/odo) since the positions are reversed from (I think) 94 through 96, compared to earlier.
