Tach is Crazy
01-12-2010, 07:42 AM
#1
Senior Member
Thread Starter
Tach is Crazy
1989 Iroc. Trying to figure out why my tach reads way to high, almost double! I,ve tried the search but it takes me elsewhere??
I am looking for this post for 89 and earlier capasitor change, Help.
"As many of you guys know... barely anyone has a 90-92 gauge cluster with a tachometer that reads properly. They almost always read too high. There has been a multitude of posts regarding finding a solution or a fix for this, but to my knowledge, no solutions so far.
For those of you wondering about calibrating an 89 and earlier tach, Morley has an old post that outlines the repair, which is a simple capacitor change. "
I can't find this thread
I am looking for this post for 89 and earlier capasitor change, Help.
"As many of you guys know... barely anyone has a 90-92 gauge cluster with a tachometer that reads properly. They almost always read too high. There has been a multitude of posts regarding finding a solution or a fix for this, but to my knowledge, no solutions so far.
For those of you wondering about calibrating an 89 and earlier tach, Morley has an old post that outlines the repair, which is a simple capacitor change. "
I can't find this thread
Last edited by jazzdadss; 01-12-2010 at 09:30 AM.
02-15-2010, 10:06 AM
#2
Junior Member
Join Date: Dec 2007
Location: Hampshire, UK
Posts: 21
Likes: 0
Received 0 Likes
on
0 Posts
Car: '86 IROC
Engine: 305
Transmission: T5
Re: Tach is Crazy
It's below if you are still looking 
. Didn't work for me though.
https://www.thirdgen.org/forums/elec...ach-fixed.html
. Didn't work for me though.https://www.thirdgen.org/forums/elec...ach-fixed.html
02-15-2010, 06:19 PM
#3
Junior Member
Join Date: Jan 2010
Location: central NC
Posts: 29
Likes: 0
Received 0 Likes
on
0 Posts
Car: 87 Z-28, 89 GTA, 79 WS-6,
Engine: 87- 305 TPI, 335 stroker, 403 Olds.
Transmission: 700r4,700r4, and th400
Axle/Gears: mostly stock
Re: Tach is Crazy
Same sorta problem on my 87 Z. But, mine reads 7000 all the time. Doesn't drop to zero, ever. I have no idea.
Thread
Thread Starter
Forum
Replies
Last Post
