A/C Rehab & Repair - Ford F250 7.3 Powerstroke | Max A/C Mod & Cleaning Evap Core 

I may have missed it, but did you take a BEFORE temp reading? thanks again

I did this when I first bought my truck. Then I removed the refrigerant, installed propane, with a touch of air duster, and installed a smaller office tube. Flammable and crazy sounding? Yes. I don't recommend it. However, it's frosty no matter the temp outside. It could be 114, and you gotta turn it down! 😂 Makes my.lady mad sometimes as it's too cold! I know it sounds crazy, study this on Google a bit, it really works.

You saved me days without a truck and several hundred dollars! Thanks for the informative video. It took me A couple of hours to perform the cleaning of the coil and resealing the cover. What a difference!

Dude you where so jolly and such a treat to watch and listen to!! Great quality in explaining

Mine is a 01 Excursion, here we go, front and rear! Thanks for the help

Have been putting these service mods off on my 7.3 all year! Thanks for sharing! Absolutely going to knock these out soon! -Dave, Lenoir City, TN

Going to give that evap cleaning a try on my '06. It looks pretty much the same as your unit - love that Ford changed very little sometimes over the years. The '06 Lariats come with the vac water valve already so I'm good there. Excellent vid! TK!

In addition to this modification - check your condenser coils condition - a lot of the system depends on the air flow though the coil. I have a 2nd generation F250 that has a great design where someone put a house hold screen in front of the condenser before I bought the truck and road rash and bugs are kept out and wow it sure saved the entire system and my A/C runs at near 32 degrees that's {Fahrenheit}to you guys down south even on hot days where we get up to 36 degrees Celsius in 100 mile house up here in Canada - because the air flow is not abstrucked. Maybe give that a try and put a house hold screen in front of your condenser coil - but if its plugged and damaged then start again with a replacement condenser. The other thing is the input pipe to the evaporator is near the exhaust manifold and really should be covered with insulation of some sort so that the heat doesn't affect the refrigerant going to the evaporator and you get max cooling.

Excellent video and great ingenuity! Reminds me of the farmer ingenuity that's becoming rarer and rarer. Definitely gonna have to try this on my '99!

I took a 99 down to Guatemala when I retired last year and its pretty warm on a daily basis, definitely working on these suggestions ASAP. I've installed the riffraff filter and the PHP hydra so far....amazing improvement. Thanks for the videos bud...keep them coming.

It's better to drill a hole in the box near the OUTFLOW side of the evaporator and blow air through the core to try and blow the stuff stuck in the inflow side back towards the fan-hole. I like to spray Purple Power on both sides to soften the crud first - wait a while - then spray water from outlet-to-inlet, then finish with compressed air.

YEARS ago over on the old FTE website they did this using a Ranger valve. (Not sure what application your valve is) I did this on MY L99 and Boy, it made a difference!! Back then they/we were accessing the vacuum lines behind the glovebox door. They said we could use either the RED vacuum line that would CLOSE the valve on ANY setting on the left side of the "off" setting OR the WHITE line that would only close the valve on MAX A/C. I did the RED line and honestly hardly ever use the MAX setting.

Excellent Scientific Advancement! I'm bout to do the same thing, Your channel Rocks! Thanks for the great video!

Good trick adding the rubber hose extension to the air line in conjunction with the angled tubing. Might do the same, thanks.

So glad I found your channel. I got a 2002 F350 7.3L and am in dire need of changing out the AC condenser, Compressor etc and get it working again. I will make sure to clean out the evaporator coil, do the heater valve mod like you showed. Thank you

Just replace your Evap core. It's not that big or expensive a job, and they will eventually start leaking on you anyway. Helps a lot with flow. Glad I did mine awhile back. Now I have pretty much a completely new system.

Absolutely helped my F250 v10 with its ac issues. Subscribed….. appreciate the video.

So glad I found your channel, very clear and concise! I have a 2000 F250 and plan to do many of the upgrades (mods) you do. One thing on the AC video, you say you washed off the heater core with a water hose but you didn't show this. If this can be done where does the water drain. Thanks

Awesome video. Been wanting to clean my evap core, definitely going to try this first.

Badass video man! This helped me out on my own truck for sure, appreciate this video!

I’m just going to put two ball valves in, turn one to block heater core, the other to circulate. $25. It’s what c3 corvettes came out with

Doin this mod my self on my 2001 thanks for the info dude

Thanks for this video, my air has been cool then warm then cool . Recharged the coolant with the same result BUT I keep hearing the max air door open and close , I know this now after your video, so I will be looking into the vac hose for leaks.

You just helped me. I did the fan and the speed controller and my next item was the evap. Didn’t even think to check the panel inside for air leaks. For sure I’m doing the bypass too.

at 11:51 you can see the holes in the hinge that will allow you to access the bottom two screws that are pretty tough to get to without using the holes. 1/4 " extension will fit.

Excellent video. I'm chasing a musty and humid smell that just started. Seems to be draining so the evap coil is the next suspect.

I'm doing this this weekend. Thanks for the great video. But you forgot to show us the blown out and finished condenser. But thats ok.

I am learning a lot of great 7.3 tips from your videos. Keep it up!

Great video I just traded my uncle my gmc 06 pickup for his 07 6.0 diesel because he is to old to have it and ac doesn’t hardly blow I’m going to try your deal before I bring it to a ac tech thanks again for your time

Worked great for my 7.3 thanks for the mod video

The best video I seen so far thank you

Awesome video man. Very well explained! This video helped out me a lot!

Well hell. I thought something was wrong. . . When the compressor and coolant tested good, I thought I was losing my mind.

Heck, I was hoping that this would be an easy day. Hell no, better be ready to work all day if not all weekend. 😮

I did this and had pretty good luck with a brush that had a good angle to it. I also did use some hose and a blow gun plus a vacuum cleaner. I used an inspection mirror to monitor my progress. It definitely helped my airflow. I've been using a special environmentally friendly freon that mixes with just about anything. An 8 ounce can was equal to 21oz of 134a. It's worked flawlessly for over 15 years and blows extremely cold. Now it blows way better. Thanks for your video. It made my day. I do need to get a new AC wiring harness though as mine is very brittle and has lots of electrical tape bandaids keeping the shorts at bay. Where can we get this wiring harness ? Make it from scratch with connectors with pigtails?

That’s good information I’ve got the same problem with my truck going to look into it thanks

Thank you for the video, got the mod done and it works amazingly.

I looked at my 2006 and the factory already did the mod. I could also tell the 2006 was factory modded because the cold is the same as my modded 2000.

I do this to my truck. Did you use the hose and where did the water go? Out the bottom drain? I will try a vacuum inside first to suck as much stuff out before using compressed air. Glad it made a difference.

Going to give this a try on my new (to me) ‘99 F250!

thanks, think I'll be doing this for my 2001 f250 SD

Thank you. Will hit this this weekend.

Great video, I will be doing this on my 2002 f-250.

question where exactly is the fresh air intake for the AC? it doesnt appear obvious without taking the cowling off. thanks

extreamly helpful

I can’t work to do this🤙🏽thank you so much for this video🙏🏽my truck needs this badly😅 99f250 crew cab 4wd

Awesome video sir I will be doing this

Thank you it helps me a lot

Thank you I save couple dollars I did it by myself

Could you blow out the evaporator from inside the cab? Great video! Thanks!

HI, we have been going through our ac on our 1999 f250 7.3. Appreciate your mod info which we may be attempting. We have gotten the unit working but the bowl that houses the blower fan is not draining and darn if we can find where the tube drains to the outside to try and clear it, even after trying to clear off the road grime. Would you possibly be able to give us an idea where to look more precisely than the info that I have been able to find: through the firewall near the passengers side wheel well? Love your channel that you for all of the information that you share. We are new to owning a diesel so the channel has been a big boost in our learning curve. Thank you

Instead of blowing it out could I make a nozzle for shop vac and suck that mess out ?

I'm gonna have to try this, my 99 7.3 if it isn't on max you might as well not have it on and recently after a 2 hour drive on a 100 degree day about an hour and a half in it would start blowing warm air for a few minutes then switch back to cool very annoyed about it.

Thank you

Just subscribed to your channel. You have great content. 😎🤙

Wow, cool!

Thank you so much

Of the two things you did which one do you think did the most good?

Thanks for the great video.

excellent vid and info thanks sir

Appreciate the very helpful videos on the 7.3. My 1999 F-350 A/C blows ice cold but randomly shuts off and blows warm air. If I turn off and let it sit for 2-3 mins it usually will blow cold again… sometimes it’ll work all day without issue and other times only 2 mins. Could this be a vacuum issue?

I have 2003 ford f20 5.4 GAS, did this diesel truck have a blower resistor ? think i barely see the connector there. If your talking the EVAP. I think you should have taken out the blower resistor off first and used that hole to spray anything on the evaporator. The blower resistor is usually pretty rusty to begin with, any more water or whatever could melt it or corrode it even more, which can lead to connector and blower motor fail, LATA.

Thanks. Curious why you didn't blow out the evaporator core from inside the truck when you had the cover off...

I have a 2001 f250 7.3 and already have the max air mod down which helps when on Max AC, i also have washed Cleaned/washed out the evaporater coil. The air just doesn't blow cold with normal AC on. What temps are you seeing with normal AC on?

Hi, I have a 2002 F250 V10, AC is very cold on warm days but if its really hot or I am towing in hot weather the fan blows warm air, If i switch it off for a while while driving and turn it back on its cold for a while then warm again, is it freezing up ? Thanks Gary

Great video thanks

Great video thank you so much for the information. Quick question does the 2003 F350. 7.3 L powerstroke have a cabin air filter ??

Just paid about 30$ for the valve at Oreillys

Ok. On my 97. That actuator is not only max ac. But normal and vent. Also the actuator by the fan blower is your vent door. Dose the same thing on the same settings. Why go through the fire wall when you can go right there about 6 in away??

Wonder if the core cleaner you use for your home ac would help clean these

Awesome video man, I’m doing it to my 7.3 E 350 van. At night my vent temperature is 25 . I also have a 6.0. Do you know if the 6.0 comes with it from the factory or do I need to do the mod?

If my 2000 ford f350 7.3 powerstroke AC goes out, do I need to replace the whole system since they no longer use freon or can they still use the current ac unit and ad the new standards substance?

Does all this also pertain to a 2002 f250 7.3 ?

Great editing and content good job

Did you end up spraying water through it also? If so did it all drain out properly?

Sir thank you for this video. When u spray cleaner and water in there will it all drain out of the condensation line?

Stupid question. Did it help your air flow a little as well mine blows cold but only feel it about a foot from the vent makes it rough to drive daily lol

I just did this job and the previous owner had the hoses from the water pump and passenger head switched at the core opposite of the way u have it in the video. Smh. Does that matter? And The part of the valve w the arrow is coming from the top of the water pump.

Hello. Great video. Thank you!. Couple of questions. This valve seems to be out of stock at Amazon, what other valve would you recommend? brand and perhaps, part number. What tuner would you recommend for my 99 F250, automatic, 4x4. There seem to be a bunch of options, all with different reviews. I am looking for better shifting, maybe better performance and readings would help. I almost never tow with it. Thanks again.

Where does the water go after you rinse the evap core? do you have to use a wet vac or does it drain by itself?

Great video. Very helpful. I have to wonder though if the process would have been better/easier if you left the interior cover off the unit before taking off the fan/blower. That way you could have put a wet/dry vacuum cleaner hose where the fan was and used the compressed air from INSIDE the cab to blow the dirt, etc. towards the vacuum cleaner hose. Seems like it would be a much, MUCH better way to unclog the nooks and crannies -- without making a mess. Would also probably make water optional.

Hey just wondering what size weather stripping was it 1/4 in and what size vacuum like and what fittings when moving I threw out my extra stuff I had it all to Tia

Where does the condensation drain from? Mine will cool off pretty good then get hot. Will work for the first 5 minutes then won't work at all.

What is the refrigerant charge amount on these? Anyone? I have a 99 and 32oz gets me about 58 going down the road with 100deg weather. Cool but it won’t freeze you out. I have a complete brand new everything system also.

I have something weird going on with my 2000 f250 ac works fine when started then after a while usually when truck is turned on and off shortly after runny the ac for a while the mode switch doesn't work and defaults to windshield vents. Blend door actuator maybe?

Does this work on 3gen dodge Cummins

Mine is blowing out the defroster now ? After I installed this

Does it matter what side u put the lines

I plugged the hose to the valve and still same results? My air pump runs doesn't turn off so is that a leak?

Does the orientation of the lines in relation to the valve matter?

where would I get the vaccum line and t fitting?

What kind of truck is it.?

Hello!! I did this conversion, however, I started having problems with pressure. Now my defrost barely blows on the drivers side, and will not push heat on the passenger side. When I disconnect the T-valve under the dash, I feel nothing. It doesn't suck or blow. My vaccum pump however does work, as I have disconnected the right tube when looking at it from the top, standing on the passenger side of vehicle. I don't know what to do but remove the conversion for sake of pressuring? All online info only pertains to defrost on, I cannot find any information on defrost minimally working. Also, if there was a leak on a line somewhere wouldn't the pump stay activated because it cannot reach 15psi? I'm lost...send help.

👍🏻

How did you get the panel to slide back on the heater core ? I was able to remove it fine, for whatever reason I’m struggling to get that tab to slide over the bracket

Question will this also work on a 2008 6.4 - both cleaning and adding the water control value- sorry another question how did you get the shop vacuum hose in did you go in the air vent itself? Thanks for all ur support

Will this also work on a 2004 6.0 powerstroke?

Hi, good video......my A/C is nice and cold but when its really hot it blows warm, if i switch it off for 10 mins and put back on its cold again, any ideas would be appreciated........Gary

Ok I tried your jumper to get the compressor to cycle it worked I got a can in it but I heard a hissing coming from in front of radiator that ac looking radiator had a hole rubbed in it from a cooler in front of it. Help lol

It blows on ac but when I turn to max ac it goes to defrost??