Question about 2006 Dodge Ram 2500

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My ac compressor on my dodge 2500 want engauge?

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WHAT IF I JUMP THE AC COMPRESSOR AND MY TRUCK SHUTS OFF

Posted on Jul 12, 2013

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Same thing is happening on my 2007 dodge 2500 ram 5.9D. I bypassed the switch system and the a/c is working fine.I did use gages on it before I did this. It looks like the low pressure switch is bad. It has 3 wires on it so you cant jump it to bypass it.

Posted on Jul 05, 2011

  • Richard Jacobs
    Richard Jacobs Jul 05, 2011

    The low pressure sensor transducer is tied into the OBC so it cant be bypassed.

  • Richard Jacobs
    Richard Jacobs Jul 21, 2011

    Replace pressure switch did not help. Order new compressor kit. compressor clutch is bad. Can't buy just the clutch.

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This could be a few things. The freon could be low, one of the switches (high or low pressure) could be bad, or you could have a bad compressor clutch. You can test the clutch by checking for battery voltage and ground at the two pin connector with the A/C on if you have both power and ground, then the clutch is bad. You really should start by hooking up pressure gauges to the A/C ports to check the pressures, and these vary depending on ambient temperature and whether the A/C compressor is engaged or not. I am willing to bet that the freon is low though and may be just as simple as recharging the system.
Hope this helps. Good luck!

Posted on Apr 09, 2011

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Compressor not coming in but has freon and power but the power on pressure switch is dim

Posted on Jun 23, 2011

  • Richard Jacobs
    Richard Jacobs Jul 05, 2011

    Same thing is happening on my 2007 dodge 2500 ram 5.9D. I bypassed the switch system and the a/c is working fine.I did use gages on it before I did this. It looks like the low pressure switch is bad. It has 3 wires on it and it goes into the OBC. So you cant jump it to bypass it.

  • ryan_Bmx_420 May 15, 2012

    How did u bypass the switch?

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U need to check for pressure in the ac system. ac clutches wont engage if no pressure in system, this is a safety measure to keep comp from burning up. if u do have freon pressure in system next step would b to check for voltage at ac clutch with system engaged and engine running. u should have 12 volts at compressor coil (under clutch) . very common to have faulty coils wen they fail they dont engage clutch. one other check would b to chek lo pressur switch on the bigger of the two ac lines,or at the firewall where the ac lines go inside the cab.switch mayb directly on the expansion valve on the lines going into firewall. if ac system has pressure switch should have pwr going in then out the other side(usually only two wires at this switch), try jumping switch to see if clutch engages. still need gauges hookd up to b able to do a thourogh diagnosis. hope this was helpful, good luck

Posted on Apr 09, 2011

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Posted on Jan 02, 2017

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SOURCE: 2007 Dodge 2500 5.9 diesel.

Working same problem today on my 2006 Mega Cab Diesel. 2 possibilities. Either the compressor clutch coil is going bad ( totally integrated power module tries to engage it a couple of times, senses the coil resistance is wrong and shuts down) or the TIPM (Total Integrated Power Module) is bad. I'm leaning toward clutch on compressor but still have testing to do to isolate. Could be both, but I doubt it. New TIPM is about $900 it appears from what I read. New compressor is cheaper. May be able to replace just the clutch coil for even less but reading mixed results. Good luck.

Posted on Aug 06, 2011

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SOURCE: ac compressor will not engauge system is full of

The ground wire from the clutch goes to the over pressure switch and if comes off ( found this many times ) It wont operate if the switch isnt giving you a ground ground the wire and be cool as this car is too old to spend alot of money on. The power comes from the switch on the dash to the low cut switch on the dryer from the dryer to the clutch no rocket science, put power on this wire and the clutch should kick in if the ground is good if it still doesnt work the clutch is bad and you need aclutch and ciol kit installed. unbolt and move the compressor to where you can get to the clutch with your set of special tools ( they can be rented at the bigger discount auto parts stores ) install the new clutch and coil and have air, Now if this baby is leaking and the pressure gets low enought to make the clutch cycle alot the new clutch will burn up too. so fix the leak and turn the system off if it strarts cycleing till you can charg it or fix it and charge it. the compressors are the #1 leakeron these cars and the clutch comes with a new or rebuilt comprsser. Shop aroud as these used to be popular but the old cars are about gone and the clunker byout is going to get alot of the cars that qualift like this one

Posted on Aug 14, 2009

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