1990 tach not working
Thread Starter
Safety Car
Joined: Oct 2000
Posts: 4,282
Likes: 172
From: Lake Wylie, South Carolina
1990 tach not working
I am working through various bugs and broken things this weekend. I'm starting with replacing spark plug wires but that won't take long. Next on the list is the tach.
The tach was erratic just before it finally quit working and dropped all the way to the bottom of the display past the other rpm Mark. It no longer moves at all.
I have heard that this would not be a failure on the circuit board so I most likely won't have to pull the cluster. If this is true where do I start looking?
I have the factory service manual but can't find this. Anyone know the section and page as well as information on what to do?
Thanks!
Wade
The tach was erratic just before it finally quit working and dropped all the way to the bottom of the display past the other rpm Mark. It no longer moves at all.
I have heard that this would not be a failure on the circuit board so I most likely won't have to pull the cluster. If this is true where do I start looking?
I have the factory service manual but can't find this. Anyone know the section and page as well as information on what to do?
Thanks!
Wade
Team Owner
Joined: Sep 2003
Posts: 25,373
Likes: 2,734
I am working through various bugs and broken things this weekend. I'm starting with replacing spark plug wires but that won't take long. Next on the list is the tach.
The tach was erratic just before it finally quit working and dropped all the way to the bottom of the display past the other rpm Mark. It no longer moves at all.
I have heard that this would not be a failure on the circuit board so I most likely won't have to pull the cluster. If this is true where do I start looking?
I have the factory service manual but can't find this. Anyone know the section and page as well as information on what to do?
Thanks!
Wade
The tach was erratic just before it finally quit working and dropped all the way to the bottom of the display past the other rpm Mark. It no longer moves at all.
I have heard that this would not be a failure on the circuit board so I most likely won't have to pull the cluster. If this is true where do I start looking?
I have the factory service manual but can't find this. Anyone know the section and page as well as information on what to do?
Thanks!
Wade
If you have C68 AC what does the AC LCD display for values at various levels of acceleration - does it display anything at all? If no C68 you can't do this test!
Last edited by WVZR-1; May 14, 2017 at 11:35 AM.
Thread Starter
Safety Car
Joined: Oct 2000
Posts: 4,282
Likes: 172
From: Lake Wylie, South Carolina
Not sure what you mean by C68 AC???
