high pressure

98ranger on Sun July 10, 2011 3:19 PM

Year: 94
Make: ford
Model: ranger
Engine Size: 4.0
Refrigerant Type: 134a
Ambient Temp: 75
Pressure Low: 30
Pressure High: 300+
Country of Origin: United States

ok just a little back ground i bought the truck and the compressor was bad so i went ahead and replaced the compressor, air dryer , orifice tube, and condenser it was full of junk i also flushed the system ....my problem is the high side pressure goes above 300psi and the low is around 30 aout side temp was about 75deg someone please help me im at my wits end

bohica2xo on Sun July 10, 2011 5:04 PM

That 6mm Piccolo condensor does nor flush well - or easily. You say it was "full of junk". More than likely it has several partial blockages.

Of course you need to have the fan shroud & all air dams in place, as well as a properly functioning fan assembly. You will need to replace that condensor, and the orifice tube.

B.

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"Among the many misdeeds of the British rule in India, history will look upon the act of depriving a whole nation of arms, as the blackest."
~ Mahatma Gandhi, Gandhi, An Autobiography, M. K. Gandhi, page 446.

98ranger on Sun July 10, 2011 6:05 PM

Quote
Originally posted by: bohica2xo
That 6mm Piccolo condensor does nor flush well - or easily. You say it was "full of junk". More than likely it has several partial blockages.

Of course you need to have the fan shroud & all air dams in place, as well as a properly functioning fan assembly. You will need to replace that condensor, and the orifice tube.

B.

the fan shroud is there along with the air dams , and yes the fan is working . and i already replaced the condenser along with the orifice tube , and air dryer and im still getting a high reading

bohica2xo on Sun July 10, 2011 6:31 PM

Sorry, misunderstood your post.

If that is with a new condensor in the system, you could have either way too much oil in the system or a lot of air.

How long did it hold vacuum before charging?

How much oil is in the system?

B.

-------------------------
"Among the many misdeeds of the British rule in India, history will look upon the act of depriving a whole nation of arms, as the blackest."
~ Mahatma Gandhi, Gandhi, An Autobiography, M. K. Gandhi, page 446.

98ranger on Sun July 10, 2011 7:46 PM

Quote
Originally posted by: bohica2xo
Sorry, misunderstood your post.

If that is with a new condensor in the system, you could have either way too much oil in the system or a lot of air.

How long did it hold vacuum before charging?

How much oil is in the system?

B.

No problem, I vac'ed it out for about 1hr and I put in 8oz of pag oil which is what it says it calls for , I put the full 8oz since I flushed the system completely out.

Dougflas on Sun July 10, 2011 8:31 PM

what do the pressures say when you mist the condenser with a water hose?

iceman2555 on Sun July 10, 2011 9:42 PM

The high side service port is located on the DISCHARGE line of this vehicle. Elevated pressures at this point normally indicate a restriction in the condenser. How much lube was added to the condenser. Also was the condenser replaced as part of the initial repair or was it added later. From the post, it appears that an attempt to flush the condenser was part of the repair, yet a later statement indicates that the condenser was replaced.
Check the inlet and outlet temps of the condenser. Look for a temp drop app 24-28 degrees at idle.
Was the discharge/suction hose assembly replaced or flushed? This system utilizes a hose assembly with a muffler. This is a great place for debris to accumulate and then be moved into the condenser at start up.

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The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government.
Thomas Jefferson