Question about 2007 Dodge Ram 3500 Quad Cab Laramie

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Can not locate the low pressure port to recharge a/c. 2007 ram 3500 diesel

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The Low Pressure Side connector will be smaller than the High Pressure Side connector so the refill hose will fit properly only on the Low Pressure Side.
Read more: How to Recharge Air Conditioning with Freon in a Dodge Ram |

Posted on Jul 21, 2010

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2007 ac low pressure port

It'll be in the engine bay.
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Jun 19, 2014 | 2007 Suzuki Reno Hatchback

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I cannot charge the A/C. It will not accept the freon. 2007 ram 3500 6.7 litre diesel, I bought a tall can of freon with stop leak and it has the hose attached. It hooks up correctly to the receiving port...

you need to 'bridge' the terminals on the schrader valve (low pressure cutoff) to force the compressor to run. It should be located on the receiver/dryer, carefully strip a small section of insulation on the two wires just above the connectors, and bridge them with a piece of wire-when compressor runs, the freon will be drawn from the can into the suction port.

Jul 06, 2011 | 2007 Dodge Ram 3500 Quad Cab Laramie

1 Answer

2007 dodge 5.9 l diesel AC blow hot air we have recharged the system but still no cold air any ideas

does the compressor clutch energize? this can be determined by listening in the engine compartment for the clutch to engage. there will be a clicking sound along with the engine adjusting rpm's for the added load of the compressor. check fuses and relays. if it is not engaging. the low pressure switch also may be faulty. it tells the compressor to turn on when pressure drops. which is normal. you can test it by using a paper clip to jumper the two terminals in the connector. it is located on the same a/c line as the low pressure fill port, between the evaporator, which is in the passenger compartment, and the compressor. if the fuses and relays are good, and the compressor doesn't cycle when the switch is jumped, change the low pressure switch. fuses and relays can be found in the owners manual. if you haven't got one, download one at

here's more info:

Jun 09, 2010 | 2007 Dodge Ram 2500 Mega Cab Laramie

1 Answer

2007 Ram Truck: where is low side of ac to recharge in 2007 dodge ...

The Low Pressure Side connector will be smaller than the High Pressure Side connector so the refill hose will fit properly only on the Low Pressure Side.
Read more: How to Recharge Air Conditioning with Freon in a Dodge Ram |

May 17, 2010 | 2007 Dodge Ram Truck

1 Answer


It may be located on/near the evaporator case where the big (suction) line comes out.

Jun 19, 2009 | 2000 Ford F150 Flareside SuperCab

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Where do I recharge ac at

there are 2 ports one for low pressure and one for high pressure. the low pressure is bigger in diameter and is usually close to the dryer and or fender and firewall. the high pressure is near the condensor on the fron of the vehicle. if there are caps for the ports low will be blue and high will be red. low side pressure should be 35-50 psi and high pressure should be 135-150 psi

May 11, 2009 | 1998 Dodge Dakota

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Changing the diesel filter for ram 3500 2006

Under the hood, on the drivers side, right by the bulkhead firewall is a big black knurled cap...thats the lid of the fuel filter. Make sure you release the pressure first by turning the yellow lever underneath! that will help drain it. Make sure your turn it back after you put the new one in and restarting!

You can get a free manual for it on too!

Mar 30, 2009 | 2007 Dodge Ram 3500 Quad Cab Laramie

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