Question about 2004 Mitsubishi Galant

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Ac compressor is not working

I want to know if I can change the ac compressor myself ?
I never done anything like that but I would like to save some money.
They are charging me 150 for the part and $300.00 for labor.

Is there a website that shows you step by step instructions?

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$450 is a good price to replace an AC compressor, but $150 and a little elbow grease is much cheaper. Make sure you have all the right tools to fit. If you have a Galant that is 1 to 13 years old don't worry about the refrigerant because it takes the new R134a, non damaging to the environment, unlike the previous refrigerant, chlorine based Freon. After releasing the pressure from the system and disconnecting the battery, loosen the belt via the tention arm. Remove the two lines from the front of the old compressor (2 screws). Then disconnect the sensor, and then the 4 screws holding up the compressor to the engine. Tilt the compressor so that no oil spills on to the ground. Then line up the new compressor (keep the plugs in the holes in until you are ready to re-attach the hoses so the oil does not spill out). I recommend using new gaskets so you have an air tight system. Take out the plugs, then connect the hoses. Tighten everything up, connect the belt, tighten it, recharge the system. It should take about 2 large cans of R134a.
Take to a mechanic friend and have him/her check out your handy work. Have a beer and slap your belly on doing such a fine job.

Posted on Sep 19, 2008

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You really should not do this one yourself. The old refrigerant needs to be extracted professionally so it doesn't escape to atmosphere. Most A/C extract and fill machines withdraw the refrigerant and recycle it for re-use after the new compressor is installed.

If the stuff has already leaked out, I suppose you could take change the compressor and re-install the hoses, but putting in new refrigerant and compressor oil still requires care and special equipment to do it right. It isn't an easy DIY job.

Posted on Jun 23, 2008


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