Tach problems
Thread Starter
2nd Gear
Joined: Jun 2004
Posts: 2
Likes: 0
From: lilburn georgia
Tach problems
The tach in my 87 vette has been cutting in and out recently, like there is a loose connection. any one else had a problem with theirs. and where are the relays for the tach.
Le Mans Master
Joined: Oct 2003
Posts: 6,130
Likes: 2
From: seattle WA
Re: Tach problems (meyers_gt)
Per Killebrew. Abnormal changes in the cluster tach display.
1. Water in the main bulkhead connector.
2. Defective tach filter
3. Tach filter not grounded
4. Engine not grounded to uniframe
5. Grounded wire going from the tach filter to the bulkhead connector
6. Grounded wire going from the distributor to the tac filter
7. Grounded wire in the dash going to the cluster
8. Defective cluster.
The most common one is #1, because the bulkhead connector is not sealed. The tach is in the bottom row of the connector. Hope this helps.
1. Water in the main bulkhead connector.
2. Defective tach filter
3. Tach filter not grounded
4. Engine not grounded to uniframe
5. Grounded wire going from the tach filter to the bulkhead connector
6. Grounded wire going from the distributor to the tac filter
7. Grounded wire in the dash going to the cluster
8. Defective cluster.
The most common one is #1, because the bulkhead connector is not sealed. The tach is in the bottom row of the connector. Hope this helps.
