Aircondition blow cold on passenger side and cool on the driver
hi, i have seen this problem before, you might scoff at the answer, but i will do my best to convince you. your vehicle has a low freon level, meaning the charge is low. here's the reason why: your vehicle comes with dual climate control so you can switch tempuratures on both sides, the heater/evaporater box(the part inside the dash that contains the heater core and evaporator core for a/c and heating) has a blend door that splits the air flow in half right down the middle vertically. now, a quick small lesson on refrigerant: refrigerant changes from a gas to a liquid when it enters the evaporator core in your dash, this is how you get cold air, the hot outside air blow across the cold evap core(with the cold liquid refrigerant inside) and it cools the air temp down. liquid, as we all should know, moves the path of least resistance. now, the evaporator core is like a small radiator, with tubes running through it to tranfer refrigerant, but when it gets low, the path the liquid takes is shorter than when full. in essence, only moving through the passenger side of the evap core before returning to the compressor. i found all this out by tearing down the dash thinking there was an issue with one of the blend doors inside. ten hours later, couldn't find a problem. so, i put all back together, and refilled with freon, and all of a sudden, it worked great! both sides! so, the moral is, it pays to take the small easy steps before diagnosing the big stuff. try it, check and top off the system with refrigerant, see if it doesn't fix the problem.
Jun 19, 2010 |
1998 Buick Park Avenue