air conditioner .
#16
CF Veteran
Joined: Jan 2011
Posts: 1,375
Likes: 3
From: Maine
Year: 2000
Model: Cherokee
Engine: 4.0L I6
When I first bought mine.... it would only blow throught the defroster, no matter which setting I had it on.... repaired a vacuum line (it looks cheapy) but it works.... everything that is except the A/C, but that is another problem I believe.
#18
Me too, i was working fine, but suddenly it cools fine then i accelerate and the air goes away, someone said it could be a line of the vacume but im new to this A/C, do someone have pictures of where and how to check vacumes lines.
One more thing, ac is fine then it stops blowing ac, at all speeds, i opened the hood and i see the gray tube and gray line of the ac all frozen, i mean frozen with a lot of ice on them, completely white, what could it be?
One more thing, ac is fine then it stops blowing ac, at all speeds, i opened the hood and i see the gray tube and gray line of the ac all frozen, i mean frozen with a lot of ice on them, completely white, what could it be?
#19
Member
Joined: Oct 2011
Posts: 189
Likes: 0
From: Indianapolis Indiana
Year: 1994
Model: Grand Cherokee
Engine: 5.2
that my friend is a low coolant fluid problem, most likely.. Recharge the system and that will go away. but you probably have a leak somewhere and should take steps to find and fix that as soon as possible. It will only get worst if you put it off.. A charge can of 134a with a leak dye plus some glasses to see the dye will run approx $20 plus or so. you should be able to find the leak and replace the part with minumal effort. Follow the federal guide lines for recovery and recharge and you should be fine.
3
3
#20
Senior Member
Joined: Mar 2010
Posts: 658
Likes: 1
From: Everett, WA
Year: 1992
Model: Cherokee
Engine: 4.0
No, he can't.
To purchase freon you must be a certified A/C specialist. Cars don't even use Freon anymore, pretty much anything post-1990 is Tetrafluoroethane.
If your car does take R12 (Freon) not only is it nearly impossible to find anymore, you can't do it anyways. You'll want to look into purchasing the conversion from R12 to R134A (Tetrafluoroethane) for your AC system.
To purchase freon you must be a certified A/C specialist. Cars don't even use Freon anymore, pretty much anything post-1990 is Tetrafluoroethane.
If your car does take R12 (Freon) not only is it nearly impossible to find anymore, you can't do it anyways. You'll want to look into purchasing the conversion from R12 to R134A (Tetrafluoroethane) for your AC system.
#21
CF Veteran
Joined: Aug 2011
Posts: 1,031
Likes: 3
From: Blue Springs, MO
Year: 1993
Model: Grand Cherokee
Engine: 4.0L Laredo
The blower motor resistors in Jeeps often fail, but when they are wired to default to the high setting(fan speed) and should run on that. If your AC is on, and there's no air blowing thru your evaporator (passenger compartment 'radiator') Then the system will freeze up, or overcool, causing a lot of frost on the lines. If it does that, then you probably have plenty of juice in it. Adding more r134a won't make your blower work. hope this helps some
#22
CF Veteran
Joined: Aug 2011
Posts: 1,031
Likes: 3
From: Blue Springs, MO
Year: 1993
Model: Grand Cherokee
Engine: 4.0L Laredo
My Jeep is doing something similar. The fan and A/C both work, but when it rains and is very humid it doesn't blow air out the vents. You can hear the fan, but no air. I was thinking vacuum line for a vent damper but I can't hear any vacuum leaks and don't know where to else to start.
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