Ram 4th Generation DS A/C Evaporator Coil Cleaning

Because of low HVAC air flow and a musty smell, I wanted to inspect the A/C evaporator coil under the dash. I found the coil caked in mud and nearly plugged. The video will go through the steps to inspect and clean the coil without having to disassemble the dash to assess the coil. The cleaning restored the air flow and the smell is much better.
Total time for the project was a little over an hour.
Check out my other videos on this truck where I put a new frame under it because of accident damage.

[@txjackace]

Did this today. Works so much better. More than double the airflow. Beats the hell out of taking out the dash. Thank you for your vid.

[@aaronmast6000]

Did this yesterday, totally worked. Sure beats taking the dash apart. Thank you for the video.

[@markweigenant7437]

Your time lapse editing is improving with each video. I enjoy your comments like about the speed control module and it having been replaced. I was very surprised by how well the dirt was removed by the cleaner.

[@ironicallyengineered2486]

Thank you very much!

[@johnathanl7672]

Very informative.. thanks so much for the video. I have the same year model truck and this helped me tremendously!

[@dptp9lf]

My truck is an old farm truck as well... been putting off the inevitable but your video has motivated me... LOL

[@xipingpooh5783]

Excellent work

[@radicalttc]

Great video, I have the same problem. I did hear about a no rinse coil cleaner. Nu- Calon I think was the name.

[@josephpuchel6497]

Hey you probably going to experience blend door problems with all that gummy dirt. Nice video

[@523crazyj]

Doing mine tomorrow. So stupid on rams part to not have a filter in place

[@twintwo1429]

My 2002 dodge 1500 is old enough that I don't worry about depreciation or rigging stuff up. I get it done the quickest and cheapest way possible. Body is in good condition and every thing works.

[@CaptainLou94]

Does air from the blower flow through this evaporator coil before the heater core? The air flow when on heat doesn’t seem as strong as when it’s on cool.

[@DSGB2199]

The things we have to do to dodges.. all cuz they cheaped out on a filter. Wonder if you could plastic weld the gaps back up?

[@ericatube1983]

Where did you fund this truck??

[@heavyflippingrandmasboifir669]

Not a car....it’s a truck...lol... liked the video...

[@ianmcleod5649]

Define car

[@jeSuperfly]

Did you notice a change in temp on a/c? I'm about to attempt the same on my dodge. I suspect mine is clogged to the point of not only choking the flow but also not being able to cool the air as it should.

[@ironicallyengineered2486]

Yes there was a huge improvement in air volume and temperature regulation. Before I would run the fan on 4 and it couldn't keep up. Now I keep it on 1 and it's cold in the truck. The truck was always musty smelling before too... That's gone. Make it easier on yourself and get the cleaner specifically for cars that has the flexible extension hose.

[@dakirk1000]

Excellent👍🇨🇦😁

[@BurgaBea_Stro]

I have an 06 mega cab, had my A/C vacuumed and recharged, the compressor took the charge kicked immediately but it engages and disegages while running, the shop told me it was an electrical issue, what could be the case, the compressor is getting power, I was thinking the gap maybe a little to wide now, any input guys?

[@technoviking007]

Need to know what both sides of pressure are doing before making a guess

[@joeroe2839]

Mega cab has a sensor inside the evaporator fins in 3rd gens they take a crap givin false readings to the ac compressor..big thing on 3rd gwns

[@BurgaBea_Stro]

@joeroe2839 thank you didn't know that, that's why the shop said it was an electrical issue, is their a way around it or just have to keep replacing it?

[@joeroe2839]

@@BurgaBea_Stro replacing it would be the way to go and be done w it

[@maxpain7197]

Ya, really not cool with cutting holes in my AC on my truck but to each their own. Couldn't have just sprayed through where the blower fan hole was?

[@agilliam1980]

I fear what mine looks like. 12 and never been cleaned. Got it as second owner and the air pressure is low. Ugh. I don’t have rubber type floor so I’d have to pull the carpet.

[@redwolf2826]

Put down a trash bag and a towel

[@tacroom12]

Spraying in there with a hose didn’t hurt it any? I’m about to do this on my 2012

[@ironicallyengineered2486]

@tacroom12 with the blower motor out the only thing in there is the plastic housing and the aluminum evaporator. Just don't don't go crazy with the water and overfill the housing. It has a drain but can only drain so fast.

[@ironicallyengineered2486]

@tacroom12 with the blower motor out the only thing in there is the plastic housing and the aluminum evaporator. Just don't don't go crazy with the water and overfill the housing. It has a drain but can only drain so fast.

[@redwolf2826]

Cleaned mine and the improvement wasn’t that noticeable

[@meandkg]

can you do this without drilling or dremmeling any holes? I am thinking to just use the evaporator drain hole instead of cutting, what do you think?

[@ironicallyengineered2486]

The evaporator drain hole is at the bottom of the drain pan and probably won't work very well. Your best bet would be to remove the blower and go in that way. You can't get to the left side of the coil very well because of a baffle, however. But if you have a can of coil cleaner with a long hose you can possibly fish it up far enough. The next issue would be getting the water hose in far enough to rinse it.

[@wesleywhittington8499]

And a wet vac will help.

[@mattbirch93]

Might be able to access it from the blower motor resistor hole.

[@redwolf2826]

Yes. You can access that way. Just can’t see very well

[@garylozowski1419]

Great video ! I think I’ll remove the passenger’s seat to just to help access for my large frame.

[@williamhartlage2383]

Next time you cut plastic use lowest speed possible to prevent the plastic from melting.

[@WaymakerisChrist]

What kind of camera are you using?

[@ironicallyengineered2486]

An old GoPro with bad lighting. I have since purchased a new camera.

[@jameswaite8895]

What brand and model is the camera?

[@chrislegedza7878]

U must be nocturnal working in the dark lmao Wake up, get some light

[@miketaylor775]

Probably saved yourself 1,800.00.

[@ClaytonBigsby01]

Why the hell would you use a water hose instead of compressed air😂

[@ironicallyengineered2486]

@ClaytonBigsby01 Why the hell would you use compressed air and force the dirt further into the evaporator fins, blow it into the ducts, and blow it all over the cabin? If you watched the video, you would have noticed that the HVAC unit has a condensate drain, so almost all of the water runs out of the firewall onto the ground...

[@gsc512]

Why doesn't anybody just take a flex tube zip tight it to their boroscope and spray the coil down??? 😅

[@maxpain7197]

Why didn't you just go up through the drain. Their is a bunch of KZbin videos on it. Did it to my 2011 cummins worked great, pretty much cleans it from the inside out.

[@tacroom12]

How did you do this? I really don’t wanna cut up my box assembly

[@maxpain7197]

@tacroom12 Drive around with your AC on until you see water on your driveway where it is leaking. Find the drain. Their is a guy on KZbin that does it. You will just buy the AC cleaner that has a hose with it. Feed it up through the drain. It's pretty easy. You should be able to find him on KZbin. He has alot of views. It's easy and works

[@StreetSweets]

Dodge is trash for this design. I’m about to do this to our 2500 🤦🏿‍♂️.

[@barrymarshall1324]

Maybe buy a real light so we can see what you are doing

[@willsrestorations]

MY QUESTION IS WHY DID YOU GO THROUGH ALL THIS CUTTING OUT THE AIR DUCT WHEN YOU COULD HAVE JUST USED DWD2 CLEAN AIR SYSTEM AND ALL YOU HAD TO DO WAS DRILL A 3/16 HOLE AND WHILE INJECTING THE DWD2 WITH THE FAN ON AND THEN LET IT SIT FOR 10 OR 15 MINUTES AND TURN THE AC BACK ON HIGH MAX WITH THE FAN ALL THE WAY UP AND YOUR EVAPORATOR WOULD HAVE BEEN SPOTLESS AS WE DO IN OUR SHOP ALL THE TIME. I'M SORRY BUT THIS SOUNDED VERY DISTURBING TO US. I KNOW WE DON'T CUT HOLES IN PEOPLE'S EVAPORATED DUCTS, BUT IF THAT'S YOUR CAR THEN THAT'S COOL BUT THERE IS A WAY EASIER WAY TO DO THIS AND YOURS IS NOT IT

[@fido3561]

Why didn't you make a video of this. You don't need to YELL. Must be your first time on line. How much do you charge for doing that?

[@willsrestorations]

@@fido3561 We charge 179 if it is straightforward and we use dwd2 product. We don't have time to make defective videos like this. Fido boy

[@ironicallyengineered2486]

My apologies that the video soooo disturbing that you felt the need to reply in all caps. Your method may work for a system that only has a light amount of dirt accumulation. But when you have a situation like mine where the evaporator is completely clogged all the way through with dirt and no air is moving (even on high fan) then simply spraying some cleaner on the coil is not going to do anything. You have to get in there with some water to force the dirt out of the coil. Cutting a small access hole in the box and covering it over with some Aluminum tape is also not going to hurt anything. The coil is clean and it's blowing cold, forceful air. So I'm happy with it and I didn't get screwed out of $180 to have a shop do it.

[@willsrestorations]

@@ironicallyengineered2486 dwd2 will remove completely plugged evaporators and heater coils when used properly you just leave it in the system for an extra 15 minutes and they come up absolutely spotless so I don't know what you're talking about. Your process of cleaning the evaporator was a little extreme and not necessary, if that works for you then that's fine but hopefully nobody watches this video and follows your suggestions cuz they were ridiculous as most KZbin videos. You have been inducted into the KZbin defective club where you and your fellow members can discuss ways to be smarter. GOOD LUCK

[@willsrestorations]

@@fido3561 YEAH OKAY FIDO, NOW YOU'RE HEARING PEOPLE SCREAM IN A POST, PERHAPS YOUR DOCTOR HAS NOT ADJUSTED YOUR MEDICATION IN QUITE SOME TIME

[@bigbuckdown1631]

Do not do this!! It's just as easy with these trucks to pull the dash and whole box to replace the evaporator and add a cabin air filter afterwards.

[@ironicallyengineered2486]

Well it took 30-45 min and about $5 to clean it this way and it works like new. I suppose you could pull the dash... And probably the seats... And drop the column... And remove the center console if you have one... And the evaporator box and replace the evaporator. Oh don't forget now you have to suction and refill the A/C system. Sounds like a 30 min job too.

[@skipwilliam5639]

so 30 minutes or 12 hours? Hmmmm no thanks no one cares if there is a piece of tape on the unit after its cleaned. Why do all that work? What does a garage charge for that? 1200?

[@wlombardo31]

Imagine telling others what to do with their property.