air conditioner

Does the blower motor actually stop working or does the air blow out of the defroster vent then come back to dash vents on decel? The fluid on the floor....... is it by chance coolant? if so then it is probably the heater core that is leaking

If the fluid on the floor is NOT coolant, either your drain is plugged or came loose. you need to run a stiff, yet flexable wire through it to unclog it.

[quote:4bd4c46428="2CarPro Jack"]Does the blower motor actually stop working or does the air blow out of the defroster vent then come back to dash vents on decel? The fluid on the floor....... is it by chance coolant? if so then it is probably the heater core that is leaking[/quote:4bd4c46428] I checked and the air does come out of the defroster vents and back to the dash vents on decel so why is that and how do i fix it?

[quote:d935a985ec="dipweed23"]If the fluid on the floor is NOT coolant, either your drain is plugged or came loose. you need to run a stiff, yet flexable wire through it to unclog it.[/quote:d935a985ec] I don't believe that it is coolant but I can't find where the drain is located.

In th eengine compartment you will see the HVAC plenum, somewhere near it will be a vacuum feed line for the vents, follow it to the source.Most likely broken somewhere.While you are there look at the bottom of the plenum box, you should see an elbow coming out of the firewall, that would be the drain.

Hi. This is a common problem that I've noticed on the internet and this forum for the Ram Trucks. It took me some time to find the actual problem.

Yes, it is a vacuum problem, but it is the check valves that are the culprit! Instead of replacing them however, just add them in series with the old ones.

They are located on the intake. Mine was next to the carb. I have a 1995 Ram 1500 V6 3.9L . The other check valve was to the Cruise Control. That fixed that as well. It used to lose speed when accelerating.

Hope this helps!
:) BTW, the check valves cost just a couple of bucks at auto stores.

evahle