Mechanics

AIR CONDITIONING

1995 Lexus ES 300

Air Conditioning problem
1995 Lexus ES 300 6 cyl Front Wheel Drive Automatic 120 miles

My questions are;
My air cond quit the other day.I thought it was low on freon. Tried to put a can in and it would not except it.I have a hose, but no gauge. Then noticed air compressor
would kick on for a fraction of a second, kick off then do it again, about every ten or so seconds. Was wondering what you all might think it could be. Also how many pounds should gauge show for proper charged system.
And if it might be a switch. Where are they located.
Thx Rick
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Rickyrabbi
August 14, 2010.




It probably needs more freon

Refrigerant Capacity 1.65 lbs.

Disposable canister method: Connect a suitable refrigerant dispensing valve to refrigerant can, then connect manifold gauge set to system.
Connect center line of gauge set to fitting on container valve.
Purge air from center line by loosening connection at center fitting on gauge set, then slightly opening valve at container for a second or two. Retighten connection at gauge and close valve on container.
Open manifold gauge set low side valve and allow refrigerant to enter system. The refrigerant can must be kept upright if vehicle low pressure service gauge port is not on suction accumulator-drier, or suction accumulator fitting.
When can is empty, close valve and remove can. Connect new can, open valve and continue charging until correct weight of refrigerant has entered system.
If system stops drawing refrigerant in before system is completely charged, start engine, turn A/C on and operate blower at high speed until remaining refrigerant is drawn into system.
When charging is complete, close valve at container and run engine for approximately 30 seconds to clear lines and gauges, then close low side valve on gauge set and disconnect refrigerant can from center hose.

Rasmataz
Aug 15, 2010.
I put gauges on system. High side was purging between
400 450 psi. Let some freon out temp went to 46 degrees from 60. Decided to evac system. When I put freon back in, high side is coming up but low side is not. Now temp is in high 80s.I noticed in your first reply you did not mention to turn engine on but only when it needed more charge, is that correct. Am I doing something wrong with the procedure
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Tiny
Rickyrabbi
Aug 15, 2010.
The AC has to be running-sounds like its overcharge or it still has air in it-

Rasmataz
Aug 15, 2010.

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