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Where is the ac low pressure switch - 2005 Ford Five Hundred

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Posted on Jan 02, 2017

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1 Answer

Intermittent ac pt cruiser 2008


Check low side pressure or try bypassing low pressure switch with a paper clip in the connector. If pressure is good but bypass works, you need a new pressure switch. If pressure is low, charge the system. If pressure and presxure switch are good, please get back to me and I'll do some research.

Sep 19, 2017 | AC Cars & Trucks

1 Answer

Location of the Ac low pressure switch 2007 Mkz


The low pressure switch (also known as the AC compressor switch) will be under the hood, it will be located in the low side AC line from the AC compressor, this is the larger of the two lines from the AC compressor. See picture below, looks like it has a three wire connector. Also what is the AC doing that makes you think this switch is defective? Cycling on and off constantly?

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Jun 26, 2016 | 2007 Lincoln MKZ

1 Answer

Ac clutch not kicking on


ADD Freon. It's a R134 system and the pressure is too low. Trust me add Freon and it will work fine. With a low amount of Freon if you jump the low pressure switch at the accumulator it will be very cold but will not have enough pressure to kick on the low pressure switch.

Jul 22, 2012 | 1991 GMC K2500

1 Answer

What energizes ac relay on 2005 freestar


The low side pressure switch in the AC low pressure line signals the PCM (computer control) to close the AC compressor relay and raise the idle speed. If the system is low on refrigerant charge the relay will not allow the system to engage the compressor, this is because the oil that lubricates all the works is suspended in the AC refrigerant, if that is low then the system gets no lubrication and will quickly seize up..

Mar 23, 2012 | 2005 Ford Freestar

1 Answer

Ac was working fine the night before. left the next mornng ac clutch will not engage. system was checked. freon pressure is good. checked fuses, all good . checked ac clutch fuse under hood . ok. replaced...


Check the low switch by the dryer or accumulator, its a long narrow cannister,

it will have a pressure switch attached to it or near it. put your, ac on high,

pull the molex off the switch and jump the molex with a wire or paperclip,

if the compressor comes on and the ac starts to cool, you will just need

to replace the low pressure switch, if the clutch does not come on,

check the low switch molex to see if there is 12vlts there. good luck!

Jun 28, 2011 | Buick Regal Cars & Trucks

1 Answer

1992 c 1500 the ac compessor has no elect. getting to it.is it the low pressure switch?


It could be several things,I would check the fuse with a test light, the low pressure switch, the connecting

molex plug that connects to your low pressure switch could be bad and have a break on it.if all this is

okay, there is a high pressure switch at the ac compressor check to see if it has voltage. whenever you

change out the ac compressor it is recommended that you change out the high pressure switch. hope

this helps. good luck!

Feb 19, 2011 | 1992 Chevrolet C1500

1 Answer

How does a person short out the low presure switch on a 1995 cadillac a/c? i would really appreciate any help on this.


The low pressure switch is located on the accumulator, and you only need to remove the connector to the low pressure switch and jumper the wire connector to by-pass the low pressure switch, however I would not recommend doing so because it is there to keep the AC compressor from being damaged due to running it low on R-134a.

If you are trying to charge the AC system you do not need to by-pass the low pressure switch, just start the vehicle and turn the AC on to maximum, then charge the AC system and when there is enough pressure in the system the compressor will come on, and then just continue to fully charge the AC system.

Jun 08, 2010 | 1997 Cadillac DeVille

1 Answer

2001 chev tahoe has no power at a/c clutch checked fuses,relay,high pressure switch,low pressure switch and has 100 lbs of pressure on low side port


IF YOU HAVE 100 PSI ON LOW SIDE.YOU HAVE A EXCESSIVE AIR AND MOISTURE IN THE SYSTEM.YOU HAVE TO HAVE SYSTEM DISCHARGED AT AC SHOP OR DEALERSHIP.YOU HAVE TO REPLACE ACCUMULATOR OR RECEIVER DRIER.HAVE SYSTEM EVACUATE.THEN RECHARGED.SEE YOUR AC IS NOT TO COME ON LONG AS YOUR LOW SIDE TO HIGH.YOUR LOW PRESSURE SWITCH. IS NOT GOING TO CLOSE CIRCUIT TO TURN ON COMPRESSOR.UNTIL PRESSURE DROP AT A CERTAIN LOW PRESSURE.

Aug 25, 2009 | Chevrolet Tahoe Cars & Trucks

2 Answers

No power for AC compressor


try removing the plug off the low pressure switch on the accumalator plug a paper clip into the plug and turn ac on if it comes on then your low pressure switch is bad or your low on refigerant.

May 28, 2009 | 2000 Chevrolet S-10

2 Answers

I need to know how to jump the ac low pressure to get my ac compressor to come on.


If you look on the low pressure side of the AC system you will see a plug that is incorporated in to the line. It will have two wires leading to it. Remove the plastic clip that attaches the two wires to the sensor and use a short piece of wire to connect the two terminals in side the plug by putting the ends into the cap. This will bypass the low pressure sensor and allow the AC clutch to engage and begin to cycle again. Remember this low pressure switch is there for a reason. If you don't add more r-134 to the system and allow the AC compressor to cycle you will destroy the compressor. You need to charge the system when you bypass the low pressure switch and get the system up to full charge status and reconnect the switch.

May 24, 2009 | 1995 Chevrolet Camaro

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