Car is a 97 3.8 and the other day I switched the defroster on to clear some moisture on the inside of the windshield. Now the heater or a/c only blows from the defroster vents. The a/c shuts off when I switch to heat but still blows from the top.
It looks like the system is controlled by vacuum. I have good vacuum at the intake and I can trace the vacuum line to the firewall. Does anyone know where this line comes through? Behind the heater blower maybe?
Anyone had a problem with this? Is there a cable connection from the switch on the center dash or is this strictly vacuum controlled?
Thanks,
Gary
It looks like the system is controlled by vacuum. I have good vacuum at the intake and I can trace the vacuum line to the firewall. Does anyone know where this line comes through? Behind the heater blower maybe?
Anyone had a problem with this? Is there a cable connection from the switch on the center dash or is this strictly vacuum controlled?
Thanks,
Gary