My 2008 Monaco Cayman xl. When I switch the igniti noon on the gauges should sweep They stopped doing this And the diesel gauge is sparodic When I fill up it takes. Five minutes to get to full...
Typically, these types of issues are ground related. You can pull the panel at the top of the dash and access the back of the instruments. Find the ground on the instrument cluster and temporarily clip on an additional ground.
All of the instruments on your coach will have threaded rods with nuts holding the wiring on, make sure the nuts are all tight.