question on installing ac parts and crack in radiator

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  #1  
Old 05-01-09, 06:11 PM
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question on installing ac parts and crack in radiator

hello, i have a siezed ac compressor and i'm going to change it myself. should i have an ac shop evacuate the system before i take the old parts out? i'm bringing the car to the shop after the install for them to flush and charge the system. so, do i really need to have it evacuated beforehand? any tips on the install? i'm also changing the drier and expansion valve. i heard about issues on the drier install. i was told not to install the drier and let the shop handle that due to contamination or humidity. anyone?
also, i have a small (1/8") hairline crack in the side tank (metal) of a radiator. it only leaks when hot and under pressure. can i use bars leak in that or can i seal it with epoxy or jb weld or something like that? any help is always greatly appreciated. thanks, rune
 
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  #2  
Old 05-01-09, 06:45 PM
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have the radiator soldered by a radiator shop. as to the AC, have it evacuated at the shop, do not release refrigerant into the air. After a compressor seizure the evaporator and condenser need to be flushed to remove any compressor schrapnel that might have gotten in there. Change compressor, expansion valve, and dryer, dont forget to put oil in comp. and dryer. Go back to the ac shop have them evacuate and charge the system.
 
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Old 05-01-09, 07:20 PM
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i know a shop can solder it ($70-$90), but its 8-10 yeaers old, its $250 for a new one, and i'm broke.
 
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Old 05-02-09, 04:15 AM
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I would not put anything in Rad, that is not meant to be there. ( learned the hard way) Clogged rad in 10 miles. Finally had to replace rad.
 
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Old 05-02-09, 05:08 AM
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OK..........If I was looking at this thing from an "I'm broke" angle, I'd put the $250 into the radiator and put off the A/C repair till it was financially comfortable.
The A/C requires you to have a shop recover the refrigerant before you can open the system. You then need to remove anything that needs to be replaced such as the compressor, expansion valve/orifice tube, accumulator........FLUSH the remaining parts of the system THEN install the new (with sufficient refrig oil) evac and recharge
Problem as I see it is the vehicle probably overheats with a 10 year old radiator which in all likelyhood led to the compressors demise....so without addressing the coolant you're likely to be back in the same boat shortly after the repair
One more thing.........Check to make sure the fan is drawing air over the radiator and you don't also have a fan clutch/electric fan problem???
 
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Old 05-02-09, 01:17 PM
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Originally Posted by pugsl View Post
I would not put anything in Rad, that is not meant to be there. ( learned the hard way) Clogged rad in 10 miles. Finally had to replace rad.
Can you give a clue as to what you put in so others don't make your mistake?

Did you drive the car for say a 1/2 hour straight after you added the stuff, or not?

And out of curiosity, did you try to cut open the radiator to see if what you put in it really clogged the radiator, or if it was from some other reason?
 
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