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How much psi should i charge this refrigerator to?

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1 Answer

Am I missing something? Having pressure issues with a/c.


Hi Rod did you vacuum the system before you started to recharge??

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Mitsubishi delica airco


Sounds like your a/c compressor is worn out. When the internals get sloppy, they won't build pressure.

Oct 02, 2012 | Mitsubishi Cars & Trucks

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A/C re-gassed and still does not work ?


You first have to be sure that they have charged the system with the correct amount of refrigerant, not too much, not too little. -2) Refrigerant level could be just right, but if Radiator cooling fans are not working at full speed, a/c won't get cold. -3) a/c condenser [the thin radiator in front of the Radiator] has to get good air flow through it to cool the refrigerant & bring the pressure down.. check for blockage of air flow there.-4) if al else fails, have refrigerant drawn out, evacuate system to -25 psi vacuum for 45 min. then recharge system to proper level by volume in lbs. & oz's., not just psi. pressure. This will ensure correct refrigerant level for optimum refrigeration.

Aug 09, 2012 | Cars & Trucks

2 Answers

When i turn on the a/c,the compressor does not work


CHECK REFRIGERANT CHARGE. USING A MANIFOLD GAUGE SET. HOOK MANIFOLD GAUGE SET TO LOW PRESSURE PORT AND HIGH PRESSURE SIDE PORT. LOW SIDE PRESSURE SIDE SHOULD HAVE 25 - 36 PSI AND HIGH PRESSURE SIDE SHOULD BE 178 - 237 PSI. IF LOW SIDE PRESSURE SIDE READ BELOW 20 PSI THE LOW PRESSURE SWITCH WILL NOT TURN ON THE AC COMPRESSOR CLUTCH NEED TO ADD LITTLE MORE REFRIGERANT. IF REFRIGERANT LEVEL CORRECT CHECK AC COMPRESSOR FUSE AND RELAY.IF POWER GOING TO AC COMPRESSOR CLUTCH YOUR COMPRESSOR CLUTCH HAS OPEN WINDING. AC COMPRESSOR CLUTCH NEED REPLACING.

Aug 11, 2011 | 1997 Nissan Pathfinder

1 Answer

My 1997 cadillac refrigerant , i got r 134 coolant that it said to buy and the compressor want come on to charge on the gage its almost to the red (warning) level do i keep putting in till it gets enough...


NOPE STOP CHARGING DONT PUT NO MORE REFRIGERANT IN SYSTEM.DO GOING TO DAMAGE NEW COMPRESSOR AND THE EXCESS PRESSURE WILL BUILD UP CAUSE THE REFRIGERANT CANISTER TO BURST EXPLODE INJURY OR FATALLY HURT YOU. BEST TAKE CAR TO A GARAGE.LET GARAGE PUMP DOWN AC SYSTEM AND CHARGE UP.BECAUSE YOU WILL DAMAGE NEW COMPRESSOR. MOST OF TIME I WILL HOT WIRE THE AC COMPRESSOR. MAKE SURE COMPRESSOR HAS 2 OUNCES OIL IN IT.IF COMPRESSOR START UP NO OIL IT WILL LOCK UP.DONT KEEP PUTTING REFRIGERANT IN THE AC SYSTEM, THE R 134A GOING TO FREEZE UP TOO MUCH MOISTURE IN SYSTEM YOU HAVE TO HAVE A VACUUM PUMP TO PUMP DOWN AC SYSTEM CHECK FOR LEAKS BEFORE CHARGING SYSTEM UP.LOW SIDE NEED TO BE 31 - 36 PSI THE HIGH SIDE SHOULD BE 165 - 205 PSI.

Jun 24, 2011 | 1997 Cadillac DeVille

2 Answers

What should the pressures on the low and high side of the air conditioner read ?


low side should be about 30 psi at idle speed, high side 120 to 180 psi depending on ambient temp. higher temp, = higher pressure, as you increase engine rpm to say 1000 low side should drop to 10 to 15 psi & high side should increase about 30 psi. If high side goes over 280- 300psi you have contamination (air) in system or over charged with refrigerant. you will need to recover freon, evacuate & recharge system with proper amount of refrigerant. If the low side drops below 0psi or into vacuum then the refrigerant level is low, you will have to check for leaks , repair leaks & refill refrigerant.
Hope this helps
Paul T

Jun 01, 2011 | 1997 Chevrolet Suburban

1 Answer

I just finished charging it it's at 100 psi low side tube gets cold right at fill point rest of system does not. Dryer is hot.


100 AT PSI ON THE LOW SIDE TOO MUCH REFRIGERANT.LOW SIDE NEED TO BE 28 PSI. HIGH SIDE SHOULD BE 200 PSI.YOU NEED A MANIFOLD GAUGE SET TO SEE YOUR LOW AND HIGH PRESSURE SIDE.YOU PUT TOO MUCH REFRIGERANT IN AC SYSTEM IT WILL EXPLODE CAUSE SERIOUS INJURY AND DAMAGE THE COMPRESSOR.

Jun 11, 2010 | 1997 Audi A8

2 Answers

1997 Deville ac compressor locked out - low


70 psi static does need a charge.find compressor relay, jump relay and compressor will start. add refrigerant,replace relay and a/c should work fine

Apr 16, 2009 | 1997 Cadillac Eldorado

1 Answer

A c starts off cooling good then compressor starts kicking in and


Several possible causes. Knowing the state of refrigerant charge would be helpful. Assuming it has a 'full' charge (full charge 680 Grams = 1.50 Pounds) Most common causes of AC problems:
1. Thermostatic switch (sensor) malfunction in the evaporator - allowing the evaporator to ice up. Check the vent temperature (using a cooking thermometer) to see if the temperature gets near or below freezing (32 Deg F.). If so, the thermostatic switch in the evaporator is defective. Replace it.
2. Refrigerant UNDER-charge. If the temperature does NOT get near freezing, then you need a set of AC gauges to check the compressor head pressure (High side) and the suction (Low side). High side pressure (nominal) is 229 PSI (+ - 20 psi) @ 2000 RPM. Low side (nominal) is around 20 to 40 psi. NOT common problems:
1. The magnetic clutch coil on the compressor... as it heats/warms up, the coil windings could be going 'open" circuit which would turn the compressor 'off.'
2. Compressor inefficiency (worn out).
3. Expansion Valve
4. Clogged Condensor

Mar 19, 2009 | 2004 Hyundai Elantra

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