Help!! AC problems
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Help!! AC problems
Help.. My husband replaced water pump on my 1993 Areostar last week.. now when I put any kind of strain on motor the blower for the AC quits and as soon as I let off of the gas it returns to normal.. Also the rear Air is blowing hot but only on the floor.. the ceiling vents are cool but no real pressure.. I have taken and tried to trace all vacuum lines.. don't hear any leaks.. are there any valves that can go bad that can cause this or is it something my husband may have taken lose and not replaced during the water pump installation?Please help.. he took new car out of state.. and this is the only car I have to drive.. Thanks
C.Messina
C.Messina
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Help!! AC problems
In the engine compartment up under the passenger area there is a vacuum solinoid with small plastic hose that comes out and around the air compressor. This often cracks because of brittleness and can stop the air blender door from opening correctly.
If some air is cold and some not it seems only likely that is some sort of vacuum problem.
Hope this helps.
John
If some air is cold and some not it seems only likely that is some sort of vacuum problem.
Hope this helps.
John
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Help!! AC problems
Thanks.. but we checked this.. nothing seems to be broken.. but still can't get it to work.. air still comes from defrost vents on engine strain and take off.. sitting and running at a steady speed air comes from dash vents.. any other suggestions are more then welcomed.
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From: PNW
Help!! AC problems
More than likely, the check valve in the system is bad. Follow the vacuum line from the manifold and look for a disk the diameter of a dime or nickel and about 3/16 inch thickness. The check valve on my '95 was at the transition from the black 3/16 inch rubber hose to the 1/8 inch nylon hose in the engine compartment. Remove the check valve and blow air through it in both directions. Air should only flow in one direction (toward the manifold). The only places that I've found that carries a similar check valve is NAPA and McMaster Carr. You may need to use some adapters to install it, since the original had different inlet and outlet ODs and the replacements that I found had the same inlet and outlet OD. If you go to the dealer, they will want about $70 for the check valve "assembly".
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Help!! AC problems
Thanks.. checked this and it is working.. I guess I will just have to live with it.. until I can afford to take it to the shop.. Thanks for you suggestions.. if you have any more I am listening..
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From: PNW
Help!! AC problems
If you have a vacuum pump, then I suggest that you use it to pull a vacuum in the system and see if you have a leak. If so, block off parts of the system and check the various components independently until you find the leak. It could be just about anything from a faulty connection to a bad vacuum motor. You'll have to work your way through the system.
