ac comp question
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New Member
Joined: Jun 2012
Posts: 7
ac comp question
got a 01 extreme was told it needs one it would kick on and off then never kick back on. put some freon in it and it would read from like 40 o 90 psi an and back and fourth while blowing hot air. any way if i ge a new ac comp what r the steps of filling up the system so i will be right. thanks
Beginning Member
Joined: Sep 2012
Posts: 11
i replaced the compressor on my 97 last summer, actually wasnt a bad job with the right tools, the lines come off the top of the compressor then theres 4 bolts that take the compressor off if i remember correctly, while you have it off i would take the lines off the accumulator (silver canister on passenger side) and get a new one of those and put on, i got one at advance auto for 20 bucks, and also take the line off below it that goes into the evaporator, reach in with needle nose pliers and pull the orifice tube out, these can plug up and ruin the whole system, you can get an orifice tube for less than 2 dollars. once you replace the orifice and put the new accumulator on, hook the lines back up, put the new compressor in place, put about 8 oz of pag 150 oil in the compressor, dump it in the right side hole, then hook the lines back up and fire it up and add freon. the compressor will cycle on and off till it gets enough freon in it. most gauges and freon containers you buy at an auto parts store will tell you what the pressure on the low side should read with the compressor on based on what temp it is outside.
Senior Member
Joined: Mar 2008
Posts: 975
i replaced the compressor on my 97 last summer, actually wasnt a bad job with the right tools, the lines come off the top of the compressor then theres 4 bolts that take the compressor off if i remember correctly, while you have it off i would take the lines off the accumulator (silver canister on passenger side) and get a new one of those and put on, i got one at advance auto for 20 bucks, and also take the line off below it that goes into the evaporator, reach in with needle nose pliers and pull the orifice tube out, these can plug up and ruin the whole system, you can get an orifice tube for less than 2 dollars. once you replace the orifice and put the new accumulator on, hook the lines back up, put the new compressor in place, put about 8 oz of pag 150 oil in the compressor, dump it in the right side hole, then hook the lines back up and fire it up and add freon. the compressor will cycle on and off till it gets enough freon in it. most gauges and freon containers you buy at an auto parts store will tell you what the pressure on the low side should read with the compressor on based on what temp it is outside.
Moderator
Joined: Mar 2009
Posts: 8,453
From: Belleville, Michigan
In order to have "nothing in it", it must be evacuated to 29.4"Hg for a minimum of one hour, to get everything out of it. Without evacuating, if you install the recommended amount of refrigerant, the system will be over charged.
New Member
Joined: Nov 2010
Posts: 65
From: mooresville
I agree with Captain Hook! It must be evacuated for 1 hour to get all moisture out of the system. If you get a shop to do it the machine will pull out the oil you put in the compressor but it will add it back automatically once it puts the freon back in.
Beginning Member
Joined: Sep 2012
Posts: 11
these guys are correct, i just stated the cheap do it yourself method without taking it to a shop lol. and i have no idea how much freon i put in mine, i just used a pressure/temperature chart and set it with that. it works really well though so i cant complain, let us know how it goes
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