I can see that the heater core or a/c evaporator right behind the motor is quite blocked with material, the fins are partially visible here and there. Question- Is there a safe solvent that I can spray/apply from the engine compartment side that is effective and will increase air flow? Please respond ASAP as the car is apart right now!
Thanks! This is the car that has possible Relay Module related issues that keeps the windows from going down, so I need the fan to get back on-line until I can determine the problem. THANKS to Don Gale for the tip and part number so I buy the Stabilant 22A electrical contact cleaner at a VW Dealer ($40 in stock for 5ML). And for the Amsoil, too! Gale is great to deal with!
Keith in AZ.