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Discussion Starter · #1 · (Edited)
I suspect my CPS to be faulty. Volt meter on the 3 CPS wires.

0v (somtimes 5v) at signal
0v at ground
5v reference

Key on Engine off, volt meter ground on truck frame, positive on reference wire I get 5v, so good. Positive on signal wire, I get 0v, if I put a large metal wrench near it, it jumps to 5v. Isn't this backwards? Shouldn't it be reading 5v with no metal near it and 0v when metal IS near it?
 

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My motorcycle I just fixed had a bad CPS. It OHM out good, but on the high side. It would run a few minutes then die. But restart fine, but the amount of time it would run decreased. I finally decided as it got warmer resistance increases and replaced it. As a past instructor in the field It took a few days to convince myself.
 
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