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post #1 of 7 (permalink) Old 12-01-2018, 04:07 AM Thread Starter
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Aloha Kakou

I am new to this forum. I own a 2006 Chevy Cobalt that is not running due to an accident. I hit someone who ran a stop sign and now have to replace my radiator. I bought a replacement radiator and am ready to change it over. The radiator is empty of coolant due to the accident. I took off everything in front of the radiator, headlights and mounts, bumper and bumper guard. I am now ready to remove the radiator but when I tried to loosen the bolts for the transmission fluid cooling line it hissed and bubbled so I had to tighten it back up. I am so close to getting my baby back on the road. What am I doing wrong? What is the best way to remove the radiator? Any help would be greatly appreciated.

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post #2 of 7 (permalink) Old 12-01-2018, 04:19 AM
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That is just pressure from the transmission oil line. Remove them and you will need to top up the transmission oil level once you are done. The transmission line will bleed itself after you start it up and warm it up. Are you also replacing the evaporator for AC?
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post #3 of 7 (permalink) Old 12-01-2018, 05:30 PM Thread Starter
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Hey Coby7,

Thanks for the reply and advise. Is that necessary or just a good idea to replace the evaporator? How simple is that? What about the cost either way? By now you know I am not a mechanic but I am willing to do whatever it takes to get my car back on the road. Is there anything else I need to know?
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post #4 of 7 (permalink) Old 12-01-2018, 05:58 PM
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Not if it isn't busted but I just figured if your radiator got damaged that the evaporator might have suffer damage too since it sits in front of the rad.
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post #5 of 7 (permalink) Old 12-08-2018, 11:11 AM Thread Starter
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The transmission oil lines are attached to what you describe as the evaporator, since that is what is in front of the radiator. What kind of damage would the evaporator have? I do notice it is a bit warped but nothing is leaking from it. How do I tell if it is damaged?
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post #6 of 7 (permalink) Old 12-08-2018, 01:23 PM
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If you have no A/C it is more than likely damaged. You won't see anything if it leaks you have to put in a die with the refrigerant to see a leak since it evaporates as soon as it leaks.
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post #7 of 7 (permalink) Old 12-08-2018, 07:19 PM
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The transmission lines go into the radiator itself, there is no external transmission cooler on these cars. If it hissed when you started loosening the lines to the evaporator then it is probably fine. If it was busted there wouldn't be any pressure left in it. You do not want to just take the lines off the ac and have the Freon leak out, it is toxic and if you aren't careful you could even get frostbite from the gas
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