Interesting thoughts about the AC work during dash replacement.
My 2004 Limited has a badly cracked dash and my AC is also having issues. The compressor is loud and just sounds absolutely horrible when it runs. Like there's sand or rocks in there grinding around. I've also had to refill/recharge the AC several times in the past 2 years.
I was only going to keep the truck another couple years, but I guess I too will look into maybe redoing what I can when they pull out the dash.
Can they just do the evaporator now with the dash and then I can wait until the AC system quits to do the rest? I have no clue how AC works in my vehicle. :redface:
its a real suprise your ac has lasted for over 2yrs with a noisy compressor, that is sounding as harsh as you described, such sounds are usually caused by lack/low lubrication in the compressor, whcih follows if you have a leak and have been recharging 2x or 3x a year,
you could be lucky though, and its a noisy pulley or clutch causing the noise......its rare for the compressor to make such a racket and still last more than a couple of days, mine packed up after 2 to 3 days of making intermittent groaning sounds, especially at startup.
if you allow the compressor go out [bearing failure/pack up] on the truck, then you gotta change out the condenser and some other components......definetly not a good idea.
so my advice is inspect and change out the compressor if after inspection you discover that the noise is coming from it internally, replace ur evaporator+expansion valve, and probablly change out the drier in the condenser.........then have the system evacuated to -29hg for about 30mins to vaporize all air and moisture and also to ensure the system isnt leaking, then refill with correct qty of r134a gas..a good shop should be able to do all this without any input from you...
though did mine myself (evac + refill), twas fun...