I found 18D473 parts online but with different prefixes and suffixes. I have the part number from the shop manual, 18D473 Auxiliary coolant flow pump. He said it shouldn’t cause any issues bypassing the pump, I would rather have the pump operational. Not sure if he knows that all 2002-2005 are mechanical the same and he might not find one with a 2003 label, just 2002. He can’t find a replacement part Ford no longer makes the pump, and he couldn’t find an aftermarket pump available. Disabling the pump returned the system to normal and did not blow hot air. Took it to my mechanic today and after he did his diagnostic, service desk lady said the secondary air pump was causing the problem with the blow fuse, I think she is referring to the aux coolant pump. When the A/C is turned off or disabled due to the blow fuse, I’m still getting hot air through the vents, even when temp setting is at 60 degrees. I'm having the same issue, 2003 Ford Thunderbird, A/C compressor clutch fuse keeps blowing as soon as you turn on the A/C. If anybody has experienced this and fixed it I'd sure be interested to hear about it. The "blend door" is apparently a major repair requiring basically ripping the dash out from what I've read. After tearing away the very perished rubber of the old boot, I found 3 of 4 screws installed. It does have a 1/8 to 1/4' thick foam 'cushion'. The flange on the upper end of the new boot (Macs) has no screw holes. I'm charging the battery now with the post disconnected and hope that when I reconnect the fully charged battery maybe things will clear up doubtful.įrom what I'm reading, it may be the DATC cockpit panel or the "blend door". I am in the process of replacing the rubber vent boot on the passenger side of my non-A/C 61 Bird. The DATC self-check doesn't throw any codes nor does the OBDC-II output. Seems that only extremes of temperatures are working. On a hot day last week (80*+) and the A/C set on AUTO and 74* the system blew so cold we had to turn it off. Doesn't matter if the system is in dual or single mode, auto or manual, or with the A/C light on or off. I just checked on another owner that had the same problem Tbird A/C blowing hot air: He said, 'The coolant control valve is located on the passenger side of the radiator shroud. Its in the 40s in Florida this morning and with the system in AUTO and set at anything below 80* it blows ice cold A/C.if I jack the temp up to 80* or better the heat does come on. This might help from a 20 Thunderbird Forum posts: 'Dont jump and spend money on something that may not be correct.
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If you are having issues controlling your cold A/C air and warm heater air, there is a good chance that this switch is the culprit. This switch controls the air flow entering the cabin in your Thunderbird. I thought I could see daylight with the problems with the T-Bird and it behaved beautifully for several months. Controls main air vent operation OEM correct vacuum line fittings Mounts onto main chamber Easy installation.