jontmiller wrote:
While messing around with mine I added a cheapo three gauge combo right in the engine compartment next to the hour meter, was about 10 bucks and gave me piece of mind on temps oil and such, there was a spare port available on my 4.3 for the temp as well. That said mine as many others have pointed out was all due to a poor ground at the engine. Spent an hour cleaning it all up (and it was very nasty and corroded) and it solved all the cluster problems..
On your engine, where was the ground located at? I'm having the same issue with my cluster.