I’ve got a 2003 class C motor home on a Ford E-450 chassis. Chassis has only 30,000 miles on odometer. The passenger side window in the cab just started to raise and lower slowly. Probably the window riser motor, or??? How difficult to fix it DiY?
I would try and find some sort of spray silicon lubricant over wd-40 not that it won’t work but any penetrating oil like that will also swell the rubber channel and may have adverse effects than what your looking for
Spray WD40 in the window groove. Don't have to drown it but some slick stuff will help.
Lubing the window channel should help. On a vehicle of that age it probably would not hurt to also pull off the door card, clean up any old hardened grease, and lubricate the mechanism. I've also seen where burned contacts in control switches can cause that kind of problem. (The window motors take a fair amount of current and excess resistance in the circuit will cause them to slow up or even stop.)
if lube doesn't work, then sometimes window motors have thermal fuses that go bad. Switch contacts can get dirty. The gear mechanisms inside the door get dry and worn out. Wiring harnesses in the door hinge can break. Also you charging system needs to be in good shape.
It could indicate a weak battery.
yup. I consider the battery as part of the charging system.