petehall12 Posted 6 hours ago Share Posted 6 hours ago All the gauges worked fine yesterday. Started the truck this morning and the rpm gauge doesn’t work and the fuel gauge is working but it is working upside down. The rpm will wiggle a little bit when You turn the key on but it doesn’t swing like it is supposed to. The park light and the check engine lightning bolt didn’t come on either for a few minutes then they finally came on. The cruise control works thoe and you can idle the motor up and down with the cruise control buttons? You guys think the cluster is starting to fail or is there something else I can check? Quote Link to comment https://www.bigmacktrucks.com/topic/76200-2004-mack-cv713-instrument-cluster-problems/ Share on other sites More sharing options...
Joey Mack Posted 5 hours ago Share Posted 5 hours ago Pull the cluster and checknthe grounds in side the whole. They are to the left, and are black wires. Clean the connections and trim off the glue from the heat shrinks.. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/76200-2004-mack-cv713-instrument-cluster-problems/#findComment-586448 Share on other sites More sharing options...
petehall12 Posted 5 hours ago Author Share Posted 5 hours ago 18 minutes ago, Joey Mack said: Pull the cluster and checknthe grounds in side the whole. They are to the left, and are black wires. Clean the connections and trim off the glue from the heat shrinks.. now everything has gone back to work. When I get home I will pull it back apart and check that stuff. Quote Link to comment https://www.bigmacktrucks.com/topic/76200-2004-mack-cv713-instrument-cluster-problems/#findComment-586453 Share on other sites More sharing options...
Joey Mack Posted 5 hours ago Share Posted 5 hours ago If the star washer is still there, toss it.... Quote Link to comment https://www.bigmacktrucks.com/topic/76200-2004-mack-cv713-instrument-cluster-problems/#findComment-586454 Share on other sites More sharing options...
petehall12 Posted 5 hours ago Author Share Posted 5 hours ago 26 minutes ago, Joey Mack said: If the star washer is still there, toss it.... You are talking about the ground wire right behind the cluster right?? Quote Link to comment https://www.bigmacktrucks.com/topic/76200-2004-mack-cv713-instrument-cluster-problems/#findComment-586456 Share on other sites More sharing options...
Joey Mack Posted 4 hours ago Share Posted 4 hours ago Yes..it is attached tonthe cab structure. Quote Link to comment https://www.bigmacktrucks.com/topic/76200-2004-mack-cv713-instrument-cluster-problems/#findComment-586462 Share on other sites More sharing options...
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