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Old 03-27-2016, 07:11 PM   #1
71CHEVYSHORTBED402
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How to clean exterior Evaporator Core

I'm asking...ha!......

Seems water, degreaser, a brush and blow dryer are the ticket, but I thought to ask before I do something I shouldn't. Thanks.
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Old 03-27-2016, 08:56 PM   #2
F.A.A.benny
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Re: How to clean exterior Evaporator Core

That's one way to do it
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Old 03-27-2016, 11:42 PM   #3
SS Tim
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Re: How to clean exterior Evaporator Core

GM has a really great evaporator dip cleaner we used for problem cars that was not only a cleaner but a anti-growth protective coating as well. Try you local dealer for more current information and what it would cost you.
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Old 03-28-2016, 04:06 AM   #4
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Re: How to clean exterior Evaporator Core

The first thing I do is use compressed air to blow out as much of the crap in between the fins as possible.
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Old 08-11-2017, 10:06 PM   #5
lugnuts09
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Re: How to clean exterior Evaporator Core

What's the best method of cleaning this? Trying to overhaul the A.C system and replace the heater core.
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Old 08-11-2017, 10:55 PM   #6
HO455
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Re: How to clean exterior Evaporator Core

There are lots of coil cleaning products out there. Here is a list from Grainger.

https://www.grainger.com/category/co...leaner&sst=All
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Old 08-12-2017, 08:30 AM   #7
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Re: How to clean exterior Evaporator Core

When I see an oily spot, like on the upper right corner of Lugnuts evaporator, I think "leak".
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Old 08-12-2017, 10:49 AM   #8
lugnuts09
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Re: How to clean exterior Evaporator Core

I've never really worked on an a.c. system before. It hasn't been hooked up since before I bought the truck. They even bypassed the heater core. I sure hope it's not a leak. All of your input is greatly appreciated.
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Old 08-12-2017, 05:24 PM   #9
F.A.A.benny
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Re: How to clean exterior Evaporator Core

Quote:
Originally Posted by lugnuts09 View Post
I've never really worked on an a.c. system before. It hasn't been hooked up since before I bought the truck. They even bypassed the heater core. I sure hope it's not a leak. All of your input is greatly appreciated.
It should flushed and pressure tested. I would not install an evaporator without pressure checking. I know some guys do take that risk but these evaps can look brand new from the outside and be corroded from the inside. Never know for sure until it's pressure tested
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Old 08-12-2017, 05:26 PM   #10
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Re: How to clean exterior Evaporator Core

Also I'd remove the expansion valve to flush and pressure check
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Old 08-12-2017, 06:59 PM   #11
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Re: How to clean exterior Evaporator Core

What type of shop can I get that done at?
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Old 08-12-2017, 07:59 PM   #12
F.A.A.benny
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Re: How to clean exterior Evaporator Core

Quote:
Originally Posted by lugnuts09 View Post
What type of shop can I get that done at?
Not sure but if you can't find one, you can send it to me..I do this all the time
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