A-C squeals nearly every minute and water evaporates on floor in truck on 2003 Toyota Tundra

One gent suggested it might be the cabin air filter. No recent ac service other than changing the belts. Thanks in advance

by in Deale, MD on September 04, 2012
1 answer 6 comments
ANSWER by on September 04, 2012
Have the drain hose for the evaporator case checked , it may be clogged.
COMMENT by on September 05, 2012
Is this related to the squeal or more to the condensation inside the cab?? please note moisture is on the outside of the vent housing not coming frm inside the vent.... Any thoughts on the squeal that occurs (I think) as the unit cycles on/off as I'm driving? Squeal lasts 2-5 seconds - best tension appears to be good. Thanks in advance for your time.
COMMENT by on September 05, 2012
If water is 'sloshing' around in tere and splashing into the blower motor(I had this happenning on a Honda CR-V) it'll make a high pitched squeal whenever the water hits it , like when your turning , starting and stopping. Pitch of noise would change with fan speed.
COMMENT by on September 05, 2012
Hi - No this is nearly like clockwork... Can be driving any speed/direction and she'll squeal every 1-3-4 minutes. if I turn the AC off during this squeal - it stops. If I'm driving at highway speeds, the duration is shorter but the frequency seems to quicken.... ALso if I turn AC on while driving - she squeals - go figure...lol. Is there a cabin air filter for recirculated air in a 2003 Tundra SR5 that you know of?
COMMENT by on September 05, 2012
Have both the blower motor checked and the drain. Moisture build-up in area may have caused damage to blower motor bearings. Do you ever hear the noise if the blower motor is off? that should narrow it down.
COMMENT by on September 06, 2012
No - only when AC is on... I've done limited experimentation while driving. AC button 'on' = squeal, fan only on - no squeal.
COMMENT by on September 06, 2012
never mind ...Squeal is belt and tensioner problem-noise comes and goes as A/C cycles. Changed belt and tensioner , right? If I'm wrong please let me know.