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Doug, ASE Certified Technician
Category: Car
Satisfied Customers: 8612
Experience:  16 years automotive and OTR repair including specialized training from Toyota and Mitsubishi
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How do you get to the expansion valve on a 2004 mitsubishi galant LS

Resolved Question:

how do you get to the expansion valve on a 2004 mitsubishi galant LS
Submitted: 7 years ago.
Category: Car
Expert:  Doug replied 7 years ago.



Ideally, you need to pull the dash to get the expansion valve out. This involves full dash removal including crash bar, HVAC box removal and disassembly.


HOWEVER, with a ton of patience, you can extract the expansion valve through the engine bay. It is an extremely tight fit though, and typically results in destruction of the foam seal around it.


To remove the valve through the engine bay, remove the 10mm nuts holding the suction and pressure lines to the valve where they enter the firewall.

Then remove the allen bolt holding the adapter block to the expansion valve.

Then remove the allen bolts holding the expansion valve to the evaporator.

The expansion valve must then be pulled off the evaporator, which is where you run into problems. The sealing orings are extra tight and give nowhere to pry them two apart. Furthermore the sealing foam helps hold it in position as well.

There really is insufficient room to do this with any amount of ease. It is something I have adapted from many many replacements; the proper and safe procedure is to remove the dash, to the tune of 7 hours in labor, unfortunately.

Doug and 4 other Car Specialists are ready to help you
Customer: replied 7 years ago.
Thanks, XXXXX XXXXX help but unfortunatley we do not have the equipment to either take the dashboard out, deal with the air bags, or move the engine to go through the engine bay.
Expert:  Doug replied 7 years ago.

No problem.


The engine bay access is not too bad, but you will definitely need special tools regardless (refrigerant evacuation, etc).


Thanks for the Accept, and good luck with your repairs.