Not blowing cold air
Ok so my compressor works (I think), my air blows just not cold (besides today because it's cold outside) and my clutch on my compressor engages.
Would this mean I just need to charge the system? I tried charging it before, doing the whole page oil then filling with R134A but it didnt work.
Any ideas? I'd love to have A/C this summer
Hello DentalDart,
What are we working on? (year, make, stock or aftermarket AC)
Please read and understand what Joey4speed added in his post,
Then can you do the following?
Can you provide a pix of the under hood?
First step is to put a set of gauges on the
High and Low side.
What are the reading with the engine off? Note: take readings after the engine / compressor has been off for 10 minutes. If there zero stop and let us know.
Both high and low should be approximately the same (equalized).
Second step. With gauges still connected to the
High and Low side run the engine and put the system into max (full cool) and confirm the compressor crank shaft (not only clutch) is turning (nut in center of clutch).
What is the reading on the gauges at this point? The high side should be over 100 Psi and the low should be under 50. NOTE: The readings will differ with ambient temp and inside car temp. Psi readings I am given are for example only but should be a starting point.
Third Step.
Questions,
With engine running and the system off (all slide control's and fan off on dashboard) when selecting heat Or ac do you here the damper doors in the heater / ac under dash box moving? (vacuum sounds).
With the system in Max / Full cool is the fan running in high speed?
With the compressor running does it cycle on and off? if so how often?
If so what are the gauges doing at this time?
If the high side is above 100 Psi and the low is under 50 psi with system running carefully (use inferred gun if possible) check the following.
Temp of inlet hose to compressor?
Temp of outlet hose to compressor?
Temp of inlet hose to condenser?
Temp of outlet hose to condenser?
Temp of inlet hose to filter dryer?
Temp of outlet hose to filter dryer?
Temp of inlet hose to evaporator?
Temp of outlet hose to evaporator ?
Temp of inlet hose to expansion valve?
Temp of outlet hose to expansion valve?
Note: The temp readings you are taking and supplying don't need to be scientific just as best as you can get them.
Perform the above tests and let us know the results so we can further help you.
Happy Mopar :)
Arron
Edit = clarification of description.
