Originally Posted by MRR918
I don't believe the noise is coming from the blower. The noise happens when the starcool blower is off. It only happens when the van a/c is on (forward ac / dash ac / whatever you want to call it). I can run the starcool blower as just a fan. It is a 3 speed fan and it doesn't make any noises that would indicate a bad bearing, etc.
The other wierd thing is that even after I turn the van A/C off, the wheezing continues for another 30-60 seconds. It slowly becomes less and less and eventually stops entirely.
Do you also have the 110AC compressor? When plugged into shore power does the Starcool put out cold air? Are you feeling cold air out of the Starcool when the engine is running and the Ford A/C is on?
I'm not sure of how your system works but my Ford system is tied to the Starcool. There are check valves that separates the two systems. If you have the 110AC compressor, in a sense that is another A/C system that isolates itself from the Ford air when the engine is off and you're on shore power. It is still necessary to run the 12 volt Starcool when running the Ford A/C for proper operation of both
. There are check valves, orifice tubes that control refrigerant into the evaporator, and solenoid valves. I guess the first thing to check is the refrigerant level. The Ford level for my van IIRC is 4.7 or 4.9 pounds. I found repair people that work on add on A/C systems used in big rigs are not as confused about the Starcool like a dealership.