Question about 2002 Dodge Grand Caravan
My 2002 Dodge Grand Caravan Sport A/C is blowing hot air. I went to autozone got 2 cans of r134a and added them in accordince with the instructions. The cold air lasted for 3 days. I then took my van to a local Do-It-Yourself autoshop. I hooked it up to an a/c vac 2 drain the system and check for leaks. It held the vacumme, so there were no leaks. I started putting the r134a into the system. It was taking it very slowly. I ask the mechcanic there whats up? He said I have some kind of restriction and that my reciver/dryer and expansion valve needed to be replaced. Is that what I need of do I have bigger problems?
You either have an expansion valve or an orifice tube in the system. if either is bad that will cause the prob. they do the same thing, depending on the system that you have. if you open the system to the atmosphere, the drier should be replaced. if you have a sightglass in the line, it will usually have a color parameter on it to indicate the presence of moisture. sometimes pulling a vacuum for 30 min will cure the prob. I would try pumping it down for at least 45min if you suspect a prob with the exp valve. your gauges will tell you if the exp valve is bad by the reading you get when the system is running.
Posted on Jul 21, 2009
Yep it has expantion valves one for the front and one at the rear.
Posted on Jul 23, 2009
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Posted on Jan 02, 2017
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