97 explorer 5.0 a/c problem help ?

[fordnut02]

Trying to trouble shoot my a/c problem, it was working fine the other day, tryed to use it 2 days later and was barely getting cool, opened the hood and check the compressor was cycling every 3 to 5 seconds , has never cycled that much , check the system, fully charged , turned it off , tryed to turn the a/c clutch and it was very hard to turn , after a few minutes it would turn easier , the compressor is not staying engaged enought to move the freon .

any ideas ?

 

[my98nnj]

How did you determin the system is fully charged?
The short cycle usually means its low on refrigerent, low pressure switch on the suction line is being tripped.

 

[fordnut02]

How did you determin the system is fully charged?
The short cycle usually means its low on refrigerent, low pressure switch on the suction line is being tripped.

guages read fine

 

[radman]

Its cheap and easy to replace the pressure cycling switch. Chjange that out and see if that is your problem.

 

[budwich]

what were the readings?

 

[fordnut02]

Did some looking into system and found that the orifice tube was just about completely clogged

recharged , works great

 

[radman]

Sign of Problems

What was on the O tube? If it is metal it indicates a failing compressor. If it is black tar like goo means oil has cooked leading to compressor failure. If it is black rubber pieces it is lining of hoses which are coming a part internally.

 

[fordnut02]

What was on the O tube? If it is metal it indicates a failing compressor. If it is black tar like goo means oil has cooked leading to compressor failure. If it is black rubber pieces it is lining of hoses which are coming a part internally.

black tar like goo

 

[radman]

That is the oil that has been burnt. It is time to have the system purged and flushed. Replace with new compressor oil. This is what is known as "Black Death" in Ford a/c systems.

 

[deweyville65]

Isn't "BLACK DEATH" more commonly associated with changing over to R134 from R12 and the contamination of the different oil?

 

[fordnut02]

That is the oil that has been burnt. It is time to have the system purged and flushed. Replace with new compressor oil. This is what is known as "Black Death" in Ford a/c systems.

I did flush the system and put in new oil. hope it's all good to go now ..

 

[radman]

Isn't "BLACK DEATH" more commonly associated with changing over to R134 from R12 and the contamination of the different oil?

Black Death is burnt oil. It usually has nothing to do with changing types of refrigerant. It can and does occur on many cars that have not had refrigerant changes.