2003 dodge caravan air conditioner problems

I think their may be something wrong with the AC compressor clutch but without a look myself i could not tell you so please consult a local mechanic

You get a belt for that engine without A/C . It will be shorter and you can't leave the compressor on the engine. So keeping dirt out of the hoses is most important.

you will have to replace the compressor, or install a a kit that replaces the compressor with just an idler pulley check with your local parts store for a compressor eliminate kit.....HAVE FUN

Check the heat exchanger coil see if it is ok.

Fins might be full of bugs or rubbish.
Fins might be flattened against coil.
Something obstructing the air flow across the coil?

Clean out the rubbish.
Straighten the fins so that the air can flow through.

you should be adding the 134a to the system the low pressure switch is doing its job by not allowing the compressor to kick on, it wont kick on until there is enough 134a in the system to be above the preset pressure for the low pressure switch.

could be anything from low refrigerant to bad compressor cooling fan or air distribution system. if you never have worked on a c i would recommend taking it to a professional

Check the fuses/relay for the compressor. If good, bypass the pressure switch. If the compressor comes on, there is too little internal pressure. Have the system evacuated and recharged. If the compressor does not come on, it could be bad.

you can but part is usually about the same price

I have a 2004 Dodge Grand Caravan SXT. I had the same problem and had a auto shop replace the thermostat and my AC works just fine now.

Do you have a factory manual? If not try to get one. They are not related systems. Does the AC compressor have 12 volts at the connector when it is turned on?? Your compressor may be worn out.