Originally Posted by jhagan1980
1-How would I go about testing the tach to see if it's bad? 2-How would I go about changing it out if it is? It usually stays at 0 but sometimes will work just fine or will work but be way off. I have the gauge cluster out but not sure if there is a test I can do?
There are no tests that you can do at home that will verify if the tach is good or bad. It would have to be sent to a repair shop and the cost for testing and repair usually exceeds the cost of a new tach.
It sounds like you have an intermittant connection somewheres.
Check your wiring and connectors.