Proper metod to troubleshoot AC system for 01 Dodge 2500 360

The other day I noticed no more cool air, the compressor clutch was not engaging at all. I purchased a refill system from walmart. I filled with refrigerant to proper gauge level, now the compressor
clutch engages for about 3 seconds and stops, but still not cooling. When clutch is not engaged, I nopticed pressure gauge is just at the top end of filled level, but drops to no fill area when it engages.
What are other possibilities causes the clutch to engauge for 3 seconds and stop if the refrigerant is normal level?
Maybe the inline dispenser hose gauge is reading wrong and refrigerant is still too low?
thanks
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

That's just it... your pressure is still low. When you're as low on refrigerant as you are, you usually have to jump the low-pressure cutoff switch to get enough run time from the compressor to suck in the charge. Pull the electrical connector off of the accumulator, and jumper the two terminals (on the connector, not the switch itself) to each other (short piece of wire, paper clip, etc.).
The real question is... what caused you to lose so much refrigerant in the first place? Unless you fix the root cause, you're going to be back at this again - probably sooner rather than later.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
<snip>

You should read through the directions in the kit. It sounds like you tried to charge the system without the a/c turned on. If you have a can of refrigerant hooked to the system there will be enough pressure in there to close the low-pressure switch. Don't worry about that.
Air conditioning systems aren't really an off-the-cuff affair. You have a leak somewhere. The kit you bought will probably get your system working, but you're going to be adding refrigerant again soon if you don't fix the leak. You'll also probably overload it with oil if you keep adding it.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Nope, there isn't. I just did this on a friend's '00 Durango last week, that had leaked out it's entire charge over this past winter. I had to jump the low pressure switch before the compressor would even engage at all.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.