AC sound problem

hi, my jimny 2015 has a problem, when i accelerate 
or give gas on "n" 
there is sound and i see the ac compressor stops for second and when it stops , i hear the sound.
(second 9 in the attached video).

click here to see the video

Have you checked the A/C to see if it's low on gas?

Also, l believe that on some cars the A/C will disengage when you are accelerating fast in order to improve engine power to the wheels, as the A/C compressor uses between 1-4bhp 

But it shouldn't keep switching in an out, it may be low on gas.
A/C loses up to 10% of its gas every year. Once it gets below around 60% it may not work.

Thanks for your fast replay. The gas is excellent And last tear i filled it
Do you have idea for the sound ?

lt sounds like the drive belt is slipping, have you checked the belt tension, or replaced the belt?

ls the A/C still working?

Yes the ac is still working

The mechanic said that the problem is with the pump, i replaced the pump , the new pump is stopping like above when giving gas, but there is no belt sound,
Second thing now the ac is weak and not colding like the old one before replace the pump
And now when i drive with ac i hear a sound like zzzzzzzzzzzzzzzzzzzzzzzzz
I returned to the mechanic cheked the gas and the pressure and said that every thing is ok but i know my jeep and not
Have you an idea what the problem ??

Humm.
Like everyone else my money was on the belt slipping being your first problem. You can get a similar noise from the electric clutch on the pump if it starts to slip, but I did not see any evidence of this on your first video. If you over pressure the system the electric clutch starts to slip before a correctly adjusted belt, I know because I accidentally did this on ours. If you then drop the pressure it stops. So you can stop pump clutch slip by simply reducing the refrigerant pressure, but less refrigerant reduces the performance of the cooling system.

Your current symptoms sound like the pump or low refrigerant level.

So did you fit the pump yourself and know it was good or has the pressure been reduced on the system to stop clutch slip?









​​​​​

wrote:

The mechanic said that the problem is with the pump, i replaced the pump , the new pump is stopping like above when giving gas, but there is no belt sound,
Second thing now the ac is weak and not colding like the old one before replace the pump
And now when i drive with ac i hear a sound like zzzzzzzzzzzzzzzzzzzzzzzzz
I returned to the mechanic cheked the gas and the pressure and said that every thing is ok but i know my jeep and not
Have you an idea what the problem ??

if it is not the belt and everything else checks out do Jimny have a high/low pressure sensor on the ac?  If they do perhaps this faulty or tripping when it shouldn’t, that would certainly give the problems you have.

the only other thing I can think of is dirty ac gas or perhaps a blocked condenser/radiator.

My other vehicle used to run the ac for a few minutes then trip when the gas was low, it had a series of problems and needed a lot of welding last time, so I have given up on it now.

Robin