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Re: 1998 Olds Sihoulette van, A/C recharged. The rear air...
Your A C DOORS vacuum actutator is not working or getting vacuum.or doors stuck.if you got climate control .could be out calibration .the dealership has to do it.
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not enough info does the front blow cold and just the back blows hot if so there is a mixing valve to let hot water come to the back so in the cold weather you can stay warm if the valve is bad it will let hot water to the back if the front is also warm you probably need a recharge and maybe a leak in the sys.
You may have to have the body computer "flashed" by a dealer scan tool. Sometimes the body computer looses data when the battery is disconnected. Sometimes it relearns itself after a few trips.
Generally you would need to check the level of freon in the system, and probably the expansion valve in the rear unit. You should have one hot and one cold ac line going to each evaporator.
Could be a blockage in the lines to the rear unit. Might be low on freon too. Or a blend door problem. Can you check under the floor and see if one of the lines is cold ?
HI you have a expansion valve at the rear evaperator that has gone bad and has to be replaced and a/c will need to be recharge.Hope this helps,if it does please rate my post.Thank You for using fixya,iluv2fish...Ray..
it should ony blow hot from the vent on the floor. this is controlled from a button on the dash labled RR HEATER. if the vents are blowing hot from the roof its another problem. let me know if you need more help
Possible that heatcore is going or hose from heater is leaking or falling off. You can go to www.autozone.com and see a full free online repair manual for your van
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