Hello everyone .. some time back bought this basic work truck 2000 f150 fixed few things ..but the air condition not yet ..

the compressor goes onn /off ., so i thought need to be charged .. bought some charging kit and tried to charge it .. but it did not take the fluids .. and if i recall the needle on the charging container might have been in an area were its not empty or full...... today i decided to find out if the compressor clutch if its bad .. disconnected the plug from the compressor placed my plug in the compressor to the battery .and started the engine ..AC full. fan max.. looked at compressor its onn all the time , not off /ONN ..so i feel the compressor ok ..traced the lines to the cabin hot /cold ..the cold one was started building frost ..ice ..but inside the cabin .. air is not cold .. just a touch ..if much.
so it seems that the system works in the engine area .. but inside the cabin .. something is wrong with the system .. something is not doing the work it should ..
any idea where to start please
sincerely

 

Either a valve is closed or there is a blockage.

 

what valve .. where would i look inspect or diagnose .. i know there is a problem ..,any idea ..

 

Compressor short-cycling is almost ALWAYS due to a low charge.

Most likely the system didn't take a charge due to a bad charge kit or improper usage of the kit.

 

ok so let me ask this inside the cabin there is a blower .. and the ac radiator ..and other things .. what can i test to make sure that inside the cabin the ac system is ok ..then ill go to anther area ..
so lets start in the cabin .. what most likely could be wrong

 

1. When you move the switch through the various positions, does the air come out of the correct places?

2. When the switch is in FLOOR, does the air temperature change when you turn the temp control **** from cold to hot and back?

 

Except for the operator, nothing.

Get the darned thing properly charged, THEN worry about anything else that makes itself known.

 

Yes evening as far as the vents...work...floor defrost..and floor...and the temperature...for floor changes..when turn from red...to green...I checked all that...and just to comment about the charging kit..was working...the same time...I charged anther car...do I won't waste the Freon can....so it's not that it needs charge..

 

If the compressor is short-cycling, the system either needs to be properly charged (if it's cycling from the low side switch, 99% of the time) or there's a restriction in the high side of the system (if it's cycling from the overpressure switch).

You need to both understand how it works and how to diagnose the system.

 

hello there really i will say if one respond is sweet ..nice .. so its good .. but the last reply is not helping .... if you provide this feedback ..you have to tell me what and how .. otherwise what is the point ..this is a forum and if we all new how to build space ships we wont be here ..so give me more detailed way of finding out what is wrong ..if you choose to reply .
sincerely

 

Unfortunately, in order to troubleshoot an automotive A/C system properly, you need to understand a lot of theory and need some training. This isn't something a backyard mechanic can just jump into. Tools and test equipment are also needed. The little low side gauge on top of a refrigerant can isn't enough.

 

Step 1. Go get a set of real gauges.
Step 2. Connect the gauges. Read your static system pressure, verify that it is above 45 psi, otherwise the LP cycling switch switch will not enable clutch operation.
Step 3. Start engine, turn on A/C on MAX. Observe BOTH gauges.
Step 4. Report what both gauges are reading and how they behave.
Step 5. WAIT for a response.