Well, I filled the system with the dye colored freon, purchased a u/v flashlight, and looked for leaks. I have spots all around the compressor, so i'm thinking I have a compressor leak. No leaks around the evap and condensor. I heard it is difficult to remove the compressor. Anyone with experience on how long this may take? I have a 5.4L 2 wheel drive.
REPLACE WHOLE A/C ASSEMBLY
- Thread starter cjennjr
- Start date
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stamp11127
Full Access Members
Look at the FJC AC Flush solvent 2128 description. This is what we use on the students vehicles - only thing it doesn't state cleaning ac stop leak from the components & I don't know if any of the solvents will clean that out. If you can't find one that does you are rolling the dice on new components.
If the spots are around where the hoses connect the o-rings are bad, front of compressor would be the shaft seal, around one spot on the back or side is the safety valve.
If the spots are around where the hoses connect the o-rings are bad, front of compressor would be the shaft seal, around one spot on the back or side is the safety valve.
Well, I just checked under the truck again, and the a/c clutch is FULL of the dye along with splatters above the compressor and on the side. I did not see spots around the o-rings. I guess I have no choice but to replace the compressor.
stamp11127
Full Access Members
Yep, go with a new compressor not a rebuilt one. Also make sure you add enough oil to the compressor and spin it a few times before installation.
Do i need to replace other components? Manufacturers recommend i replace the condensor since flushing it will not remove contaminants, and I haven't had a compressor
failure - just usage of a lot of stop leak. I'm looking at around $500 for a complete overhaul...
failure - just usage of a lot of stop leak. I'm looking at around $500 for a complete overhaul...
stamp11127
Full Access Members
New compressor, accumulator, orifice tube and condenser. Clean the snot out of the lines and the evap. If the evap wasn't so hard to replace I'd swap that out also. Why so much - use of the stop leak.
If you have rear air you need to clean/flush that also. Get at minimum 1 gallon of the flush and flush in both directions.
If you have rear air you need to clean/flush that also. Get at minimum 1 gallon of the flush and flush in both directions.
Luckily I don't have rear air. I may take the risk and just replace the compressor along with the orifice tube since the compressor is pretty cheap (under $200). My Expy itself is only worth $600 trade in, and a new a/c overhaul is worth the total price of the truck...
stamp11127
Full Access Members
Change the compressor, then also change the accumulator. Not worth rolling the dice on that.
Just went to Rock Auto online and they have the COMPLETE system overhaul for only $220!!! That includes compressor, oil, dryer, accumulator, condenser, and O-rings. I know I have
to get system evacuated before disassembly, and also get it vacuumed out again before adding new Freon. I might have to jump on this...
to get system evacuated before disassembly, and also get it vacuumed out again before adding new Freon. I might have to jump on this...
Trainmaster
Old School Member
Make sure it's not Chinese, or you'll be wasting your time, money and good Freon. If you have the choice, pay a bit more for real stuff and you won't be sorry.
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