Rear A/C--Running but not Blowing

[94&92Astro]

My rear A/C seems to be working fine except that no air (or very little) seems to be coming out of the vents--I made sure the intake was not being blocked but no change--makes no difference whether fan is on high or low. I can hear the blower motor going and the lines are cold --Can anyone shed any light on this.? 2002 GMC SAfari

[brcidd]

Do you have rear heat as well?-- maybe air is coming out lower ducts and is stuck in heat mode...if so, time to open up the panel and look in behind at the situation....

[94&92Astro]

Originally Posted by brcidd

Do you have rear heat as well?-- maybe air is coming out lower ducts and is stuck in heat mode...if so, time to open up the panel and look in behind at the situation....

Hey I appreciate your post and took off to the driveway as soon as I read it but... The rear A/c and the Rear heat are on two entirely different systems--they are on seperate blowers & vents-- It didn't stop me from trying though--but in the end no air was coming out the floor vents when the A/C was cranked--looks pretty simple--just seems the air cage attached to the rear blower isnt pulling any air- through although it sure sounds like it--Maybe the air cage (I think that's what it's called) is loose or somehow not properly attached to the blower motor and not getting any rpm's--thus not developing proper air flow---I'm going to pull em out this weekend and figure this thing out.. Will let you know...

[brcidd]

Must not be factory rear air/heat system-- is this a conversion van? that an upfitter did the rear systems? if so - good luck diagnosing it...

[Blue Bowtie]

The rear A/C and rear heat systems are completely separate in a FACTORY installation. The rear evaporator can very easily clog with debris, bust, hair, etcetera. Try cleaning the evaporator before proceeding.

[94&92Astro]

Originally Posted by Blue Bowtie

The rear A/C and rear heat systems are completely separate in a FACTORY installation. The rear evaporator can very easily clog with debris, bust, hair, etcetera. Try cleaning the evaporator before proceeding.

Hats off to the Blue Bowtie-- You called it! I did not even think of that being an automotive A/C, although I had a simular situation in a window unit at the house---Anyway I got a sprayer filled w/bleachwater and a garden hose and a shopvac--protected interior w some visqueen and it works great now! Thanks to All!

[Blue Bowtie]

Originally Posted by Blue Bowtie

... The rear evaporator can very easily clog with debris, bust, hair, etcetera...

Incidentally, I just noticed my spelling error. I'm surprised no one called me on it.

Regardless, if your evaporator is clogged with "bust" you're hauling entirely the wrong kind of load. Either than, or I need to hitch a ride. Just don't tell Mrs. Bowtie.

Glad you got it. Many times, it's the simple things.