I just had the A/C suction hose on my 1995 Grand Caravan with dual-A/C develop a pinhole leak which eventually dumped all the refrigerant. It was caused by the hose making (apparently occasional) contact with the front (passenger side) motor mount. In seven years, the motor mount wore through the insulating foam, the outer rubber hose, and the barrier layer. If you look at the hoses with the car sitting, it is not apparent that they touch. But they must touch when the car is moving or bouncing.
Fixing this is going to be a royal pain. A new hose assembly for the dual-air system (like mine) is $300-plus. If you have someone do it, it is a $500-plus repair. I am going to try to repair my existing hose, but I STILL have to remove the hose and take it for repair. This means both the suction AND high-pressure hoses must be disconnected...in three different locations! And finding six O-rings or gaskets to fit. I had no success finding anyone who would repair the hose ON the car.
A local A/C repair place told me (without my inquiring) that he sees this ALL the time with Dodge Caravans. So:
Warning! If you have a 1995 Dodge Caravan with A/C and 3.3L engine, look at the A/C hose routing. Ensure that the A/C hoses come NOWHERE NEAR the motor mount!!!! If there is any sign of rubbing or damage, re-route the hose or add some additional barrier.
Myron