Recommend Good E-450 Dash AC Repair, SoCal
Our 2004 Fleetwood Tioga 26Q has a dash AC problem, the vacuum actuator is not working to divert cold air through the dashboard vents. This is caused by a leak in a vacuum hose that is located in the...
Forum Discussion
The problem of no air/AC flow through dash vents is fairly common on older E-450 RV conversions. Plastic vacuum tubing hardens and cracks from engine heat and aging. Tubing should be replaced by good rubber tubing. There may a cracked vacuum tank, and other possible problems. I suspect that vacuum leak may cause a problem with smog test readings and general engine performance. It looks like later E-450 conversions use an accessible add-on electric vacuum pump to avoid this problem.
