Question about 1988 Dodge D-Series Pickups

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AC Refrigerant low

Where is the low pressure port on the Refrigerant line?

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The low pressure port is between the compressor and the evaporator. The high pressure port is between the compressor and the condensor.

Posted on Jun 21, 2009

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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

I am trying to recharge the AC in a friends 02 Pontiac Grand Am. I bought a can of R134A refrigerant, but am having a difficuly time finding the low pressure side of the AC to dd the refrigerant. I have...


YOUR LOW CHARGE PORT LOCATION IS ON THE BACK LOWER FIREWALL LOOK FOR SMALL REFRIGERANT LINE WITH BLUE CAP GOING INTO EVAPORATOR IN THE FIRE WALL.THATS YOUR LOW CHARGE PORT.

Jul 20, 2011 | 2002 Pontiac Grand Am

1 Answer

Where is the low pressure ac valve?


FOLLOW THE REFRIGERANT LINE LEADING FROM AC COMPRESSOR TO EVAPORATOR TO THE BACK FIREWALL LOOK FOR REFRIGERANT LINE WITH BLACK OR BLUE CAP THATS LOW PRESSURE SUCTION SIDE..WHEN HANDLING REFRIGERANT WEAR SAFETY GOGGLES TO KEEP REFRIGERANT GETTING INTO YOUR EYES.WHICH CAN CAUSE BLINDNESS OR DAMAGE EYES.YOU NEED A LOW AND HIGH PRESSURE GAUGE.OR MANIFOLD GAUGE SET.LOW SIDE PRESSURE SHOULD BE 28 PSI AND HIGH SIDE SHOULD BE 200 - 220 PSI.

Feb 20, 2011 | 1991 Mazda 626

2 Answers

Where do i find the low side on ac unit


Check under the air filter box, just below it, will be the low side port.

Sep 02, 2010 | 1999 Chevrolet Lumina

1 Answer

Where are the high and low pressure ports for the ac on a 1990 f150 sraight six


To find the ports, you will have to follow the high and low lines from the compressor, usually not far away, and indicated with red and blue caps on the scrader valves. The low pressure line is bigger in diameter than the high pressure line. You need to know which refrigerant is being used in this system as it could be the old R-12, which was banned. Could also be an R-12 system converted to R-134a with different high and low ports.

Feb 14, 2010 | 1990 Ford F150

1 Answer

Where is the low pressure service port to add refrigerant to a 2003 Olds Silhouette?


locate the ac compressor and look for the larger line/hose coming out of it and follow it around untill u come to the small service port for the ac this is the low side to charge ac

Jul 06, 2009 | 1999 Oldsmobile Silhouette

2 Answers

Low-pressure port I need identification


Basic AC system consists of Compressor pump (on engine), Condenser (front grill with radiator) and Evaporator (Firewall). Pump has two ports output (high pressure) and return (low pressure). Follow lines from pump. High side is usually between pump and condenser. Follow lines and find second port this will be low side (refill) port. Paint or replace port caps (red high, blue low). Also, refrigerant in system determines port size (R12 or R34).

Jun 24, 2009 | 2001 Chevrolet Malibu

1 Answer

How do you put in refrigerant for air conditioning


refrigerant is added at the low side charging port, this port is located in the low side AC line from the AC compressor, it is the larger of the two AC lines from the AC compressor, you add until the pressure is stable at around 28-32 PSI with AC on.

Jun 23, 2009 | 1994 Ford Escort

1 Answer

2000 ford taurus low end ac valve


please rate as fixed if this helps you.

The low pressure service gauge port valve is located on the evaporator to accumulator/drier suction line.


The evaporator to accumulator/drier suction line contains low pressure refrigerant gas and is equipped with a serviceable low pressure A/C charge valve port.

Apr 28, 2009 | 2000 Ford Taurus

2 Answers

AC has stopped blowing cold air. Compressor is working. Where is the recharge valve located?


There are two A/C refrigerant lines. The small line is your high pressure line and the larger line is your low pressure line.
Start at the fire wall and follow the "large " low pressure line to the compressor. The low pressure charge port will be some where on that line.
DO NOT try to recharge on the high pressure side ( small line )
Good luck, let me know.
Regards,

Apr 26, 2009 | 2001 Saturn L-Series

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