I'm Petrobruce, and I have a AC problem with my 2000 Dakota. With the AC running the compressor clutch cycles every 6 seconds. Thinking that the system may be low, I tried servicing with 134 refrigerant, but the system wouldn't take any of the refrigerant.
I even jumped the connector on top of the accumulator which cause the clutch to stay engaged. The system wouldn't take any refrigerant. AC is one area of maint. which I'm not very strong, so I'm looking for ideas of troubleshooting to be able pin point my problem. I appreciate any troubleshooting. Thanks! Petrobruce

 

AC is one of those systems that are really should be left to professionals if you don't have at least some understanding of the systems and more importantly the proper tools and equipment to deal with it. AC refrigerant does not go low just because. If it is indeed low there is a leak somewhere which requires technical skills.

 

You're assuming it's low on charge. It could be overcharged or there may be a restriction in the system causing an overpressure situation.

You need a better diagnosis including high/low side pressures.

 

You are correct. Over charged (not high pressure) systems are generally a product of inexperience and/or people not having the appropriate equipment. The chances of finding a system overcharged vs under charged are very slim and why if you do not have the experience or proper tools AC should be left to professionals. Even then sometimes experience is lacking.

 

PetroBruce,
I suspect, one of the 2
1. Your not getting the schrader compressed.....
2. your on the high side.

 

3. The oriface valve is stuck closed.

 

Need to put gauges on it, and see what pressures are doing.

 

A/C is not all that complicated most times, a gauge set is needed but a shop is recommended in the beginning. I self taught myself you just need to watch some videos and a little reading.