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Ml320 ac not cold how to jump low pressure switch

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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SOURCE: AC low pressure switch, on 2002 ford F250,

this is a switch that remains closed as long as there is enough refrigerant pressure to keep it closed.At a lost of refrigerant the switch will open.it can be jumped no problem,don't run the compresser too long or damage will result.

Posted on Apr 07, 2009

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SOURCE: How do I disable the AC low pressure cut out switch

using a paper clip in a "U" shape jump the two pins on switch it will make the compressor cycle and that will allow you to recharge the system. Good luck and thanks for using FIX YA

Posted on May 12, 2009

  • 508 Answers

SOURCE: 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.

Posted on May 24, 2009

co7196
  • 3433 Answers

SOURCE: I need a wiring diagram for the ac to find the high and low pressure valve and the compressor switch .

No you don't. The hi/lo awitch is on the tubing at the drier.

Posted on Jun 27, 2009

  • 1796 Answers

SOURCE: 2004 Honda CRV air conditioning stopped blowing

Hi!

If by red lined you mean it went over the 250 psi range??

Assumiing that the answer is yes. This is what I think.

The Hi and Low pressure switches prevent damage to the compressor if the pressure is out of range.

Before going any further, check A/C Relay and fuse.

With the engine off, check pressure on both, Hi and Low. Both gauges must have same reading. It should be between 175-200 psi at about 80 degrees temp., if pressure is over that range, the Hi Pressure switch is preventing the compressor clutch to engage, gas needs to be removed by a qualifying A/C Technician.

If Pressre is between range, and both gauges read the same, start engine and turn compressor on, check gauges, The Low side should read about 38 psi and the Hi side should be between 250/275.psi.

Any more trouble shooting should be performed by a Qualified Tech.

Don't forget to rate this post!! Good Luck!!

Posted on Jul 20, 2010

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