2000 Plymouth Grand Voyager Losing AC

Disconnect BOTH battery terminals. Touch both cables together, then reconnect. Remember! Both Cables MUST be disconnected from the Battery!

blend door is probably stuck, is the engine coming to normal operating temp?

your fan motor might be getting ready to stop working,could be a loose electrical connection, you need to know everything that makes that circuit work, such as relays, fuses, etc., could just be some bad connection, there can be so many things that can cause this problem

this could be a hole in an AC line trace or have the lines traced replace and replaced Freon

The likely cause is a bad compressor clutch, but there are other possible causes. The first thing to do is to observe the compressor with the engine running. The clutch is inside the pulley. When the a/c is off, the pulley turns on thr belt, but the clutch does not turn. When the a/c is turned on, the clutch should lock on the pulley and turn with it. Run this test and post the result here.

check the charge of the freon a low freon charge will shut it off

The problem is not with the switch, it's the blower motor resistor. The resistor is usually located in duct work near the blower motor. It will have 4or 5 wires going to it and is held in place with a couple screws. These things generate heat, so they put them in duct work so the fan blows air across them to keep them cool. Sometimes the plug gets hot and melts, you should be able to buy the resitor and the plug with wires (pig tail) from an auto parts store or a dealer. The resistors are usually about $50 the pig tail is about $30.

the back bulb is out, replace it.

You can replace just the cam sensor, I've done it, but it's kind of a delicate job. You have take apart the distributor to do it, it's not hard to do, you just have to have a little mechanical aptitude. If he's intimidated by this type of thing, you can always get a used one. I think I could probably buy a whole van for $1200.

it sounds as tho you might have taken some water in the air intake, take the spark plugs out and turn it over for about 20 seconds then put them back in and try it again, also some easy start through the intake whilst trying to start it after step one may assist it