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Discussion Starter #1
Tach readings are very erratic. How do you connect it? Anyone have problems w/there's. It worked fine for about 4 months after the install, then it started. Sometimes its right then sometimes its between 500 and 1000 rpm or more off.
Wayne
 

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If it worked fine at one point, I'd say either the tach is broken or that there is some sort of signal problem to the tach. Look at the factory tach and tell me what it is doing when you have the problems.
 

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Discussion Starter #3
I X L said:
If it worked fine at one point, I'd say either the tach is broken or that there is some sort of signal problem to the tach. Look at the factory tach and tell me what it is doing when you have the problems.
Factory tach is reading fine.
Wayne
 

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bad ground
 

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I had the same problem, checked all connections and they were good, then after replacing the tach the problem went away.
 
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