Here's a little more info.
The foam hose is in good condition.
When the 'ignition' is switched on, the fan will blow high for a minute or less and then drop to little or nothing. Then comes a honking, reedy sound and a low variable frequency pulsing sound to the fan itself.
I did a 'smoke test' at the small vent in the top center of the dash and saw no apparent air movement. (Matches can sure stink up a car!!) Shouldn't this vent be moving a bit of air at all times? Where is the little fan located? (I know where it is on Patti’s 190e).
The refrigeration is functioning, as a bit of cold comes thru the vents while driving.
After a while the A/C will blow cold with a variable fan output, even when high fan is selected. Automatic fan will do the same.
Does this point to a temperature control unit problem? Where is this located? How do I trouble-shoot it?
Was ist los?
Thanks,
Jacob