2003 Dodge Caravan AC blower runs all the time

WSCOTTDAVID

MEMBER
2003 DODGE CARAVAN

Air Conditioning problem
2003 Dodge Caravan 6 cyl Automatic 145000 miles

When the air conditioner is turned on, it works fine. However as soon as you turn the A/C (conditioned air or vent) control panel to off, the defroster comes on and will not turn off without pulling the fuse or turning the van off.

3 Replies

BMRFIXIT

MECHANIC
19,053 POSTS

Locate relay and replace it as a 1st step
let me know

need manual CHECK IT @
https://www.2carpros.com/kpages/auto_repair_manuals.htm

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Sunday, November 2nd, 2008 AT 8:30 PM

WSCOTTDAVID

MEMBER
2 POSTS

Checking the available relays for the system, it looks like the radiator cooling fan motor relay, a/c compressor control relay, and an a/c compressor relay. So I am a bit preplexed as to which I should be replacing. Also, maybe unrelated, but the van has overheated once and is apparently losing coolant. I was thinking that it is probably unrelated and probably a leaking hose or water pump. Thank you so much for your help thus far.

Update for the overheating, a leaky water pump was found as the culprit. Are all of the relays the same and should marking and swapping the relays tell you which is no good?