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Recommendations for an A/C compressor

595 views 18 replies 7 participants last post by  Smykowski  
#1 ·
Hey all,
My 2003 A/C compressor finally gave out. Magnetic clutch went out. Decided to just replace the unit.
System is sealed with no leaks. Compressor just doesn't engage. Power to connector is fine. Fuse and relay are fine. Light on dash comes on, but clutch doesn't engage. And yes, turning the blower on and selecting the temp to cold has been done. Radiator fan that automatically comes on does not turn on.
What do you all recommend for a replacement? There is Carquest at AutoZone, Denso at O'Reilly's as well as at Rock Auto. Othe parts stores have brands I've never heard of.
Any recommendations on which one?
Thanks!
 
#8 ·
Bought a 4 seasons compressor for my Dad's old Ford truck that came with a kit that included the receiver/drier accumulator and orifice tube. I also bought a condenser to go with it and it's been going for about 5 years now. It's an old work truck and didn't think it would still be going so I got the best deal from Rock Auto but the truck and the A/C are still going strong.
 
#9 ·
My Denso compressor arrived today and the box and the sticker on the unit say Made in the USA. Excellent! Not China, Taiwan, Korea or Mexico.
The O-rings kit is Four Seasons because RA doesn't list one made by Denso. Good to know 4S products are good.
The compressor came with the needed O-rings but are black in color. While the 4S kit's are green, so I'm guessing they are silicon. Should I have the shop use the 4S ones?
 
#10 ·
The O-rings kit is Four Seasons because RA doesn't list one made by Denso. The compressor came with the needed O-rings but are black in color. While the 4S kit's are green, so I'm guessing they are silicon. Should I have the shop use the 4S ones?
I would use the o-rings supplied with the compressor by Denso. If the 4S kit has other o-rings for other parts of the system, you can use those. It probably doesn't really matter that much.
 
#12 ·
Thanks! the local shop suggested using the ones supplied by Denso as well. Didn't need the dryer or expansion valve either. Got those parts to have on hand just in case they were needed. Just the compressor and I picked up the car an hour ago. Freezing cold now. Even colder than I can remember. Glad it's done since I live in the Southeast.
Already printed out a return to Rock Auto. That will take around $60 off the price of the job. I supported my local mom & pop repair shop as I do with anything that needs doing.
 
#13 ·
The expansion valve only needs to be replaced if it's malfunctioning, which they can tell by the way the gauges behave.

The dryer (desiccant bag) is normally replaced when the system is opened (like when replacing a compressor). I would have replaced it. It's working now, so I guess forget about that.
 
#14 ·
The expansion valve only needs to be replaced if it's malfunctioning,
It should also be replaced if there is a compressor failure because there may be fine metal shavings sent through the system which can clog the expansion valve. When you buy a compressor off Rock Auto they will state that the new compressor warranty will only be honored of the expansion valve and receiver/drier have been replaced with the compressor.
 
#16 ·
Mechanic said the expansion valve rarely goes bad and he rarely replaces them. As far as the dryer, he said that this style of dryer is part of the condenser and always leak taking it apart and installing the dryer pack even with new O-rings and fittings. Suggested replacing the entire unit that comes with the dryer pack installed, but that would be more labor depending on what's involved getting it in or out. He said he did a long vacuum to extract all moisture.
It's blowing very cold now and the compressor goes, it goes. Was only $190 at RA new and US made.
I'm ok with that and trying to keep costs down and not spend more than the car is worth.
Next up, is my son's '08 washer motor/pump going out.
I'll start a new thread on that with some questions. We're going to tackle that ourselves.