In the August issue there was a technical question called “Intermittent Overheating.” One of the more common reasons for this problem is a loose water pump belt – a simple solution to what often appears to be a complex problem. It happened to me last summer and a mechanic in Sundance, Wyo., found the solution when fixing another problem on my National RV Tradewinds motorhome.
Don Gholson l Wallace, N.C.
Thanks for writing, Don. Often you can hear a belt squeal when it’s too loose, particularly right after startup, but not always. A lot of modern coaches have automatic belt tensioners, but these do not always work properly. So definitely check the belt’s condition and tension when chasing down a hot-running problem.
— Ken Freund