thank you Thomas should be simuliar to 280c would think its basic going to blow smoke in main lines tommoerow then start the girl up should be fast way to detect leaks think the defroster element bad because I push up on rod that connects micro sw and element up and the blower works when running it doesn't blow like it should all speeds do work so don't think its the resister sounds like vacuum thank you for diagram when fig this problem out ill post for future refrence