Questions on replacing AC system
More Turbo
Joined: Sep 2018
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From: UT
Lead Driver
Joined: Oct 2005
Posts: 6,129
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From: Ponca City, OK
Yeah mine had like cottonwood fluff or something caught in the orifice and like you asked, how the hell does that crap end up in a sealed system. You got me beat on the evaporator though. That dude is nasty. Just think, you've been breathing that crap. That should give you the warm fuzzies, or was that a fever. Either way you were a ticking clock looking to be patient ”0” somewhere.
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Cargo Master
Joined: Sep 2015
Posts: 2,860
Likes: 365
Yeah mine had like cottonwood fluff or something caught in the orifice and like you asked, how the hell does that crap end up in a sealed system. You got me beat on the evaporator though. That dude is nasty. Just think, you've been breathing that crap. That should give you the warm fuzzies, or was that a fever. Either way you were a ticking clock looking to be patient ”0” somewhere.
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Cargo Master
Joined: Sep 2015
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on edit: Uglypitbull did you use the stock size orfice tube or a slightly smaller one to make the air cooler? How did it work out for you?
Hotshot
Joined: Jul 2008
Posts: 12,782
Likes: 2,142
From: N.GA Mountains
I’ve put the 38639 orifice in every system I’ve had open for 15yrs now. Yes, under some conditions the evaporator will freeze up on MAX AC ‘with low fan’ setting. You need more air moving across this COLD coil to keep it from freezing up. It hurts nothing to freeze, but when the air stops moving through the evaporator - the cab isn’t being cooled.
More and more ‘MOTORCRAFT’ branded parts appear to be made by different manufacturers. The last Motorcraft water pump I bought had ‘made in china’ on it....
More and more ‘MOTORCRAFT’ branded parts appear to be made by different manufacturers. The last Motorcraft water pump I bought had ‘made in china’ on it....
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Cargo Master
Joined: Sep 2015
Posts: 2,860
Likes: 365
I’ve put the 38639 orifice in every system I’ve had open for 15yrs now. Yes, under some conditions the evaporator will freeze up on MAX AC ‘with low fan’ setting. You need more air moving across this COLD coil to keep it from freezing up. It hurts nothing to freeze, but when the air stops moving through the evaporator - the cab isn’t being cooled.
More and more ‘MOTORCRAFT’ branded parts appear to be made by different manufacturers. The last Motorcraft water pump I bought had ‘made in china’ on it....
More and more ‘MOTORCRAFT’ branded parts appear to be made by different manufacturers. The last Motorcraft water pump I bought had ‘made in china’ on it....
FTE Leadership Emeritus
Joined: May 2014
Posts: 27,355
Likes: 5,951
From: Lake Hartwell, GA
My evaporator looked the same way. Absolutely amazing how it was still working.
As for the parts not fitting together properly. Maybe I missed it, but did you verify you received the correct part and part number? Not sure if there is a number printed on the evaporator coil anywhere.
I know you are in FL and the weather is getting hot, perhaps you could clean and flush the old evaporator and reuse it as a last resort if @uglypitbull doesn't have any advice for you.
It seems that even the reputable parts suppliers are turning into a let down more each month that goes by.
As for the parts not fitting together properly. Maybe I missed it, but did you verify you received the correct part and part number? Not sure if there is a number printed on the evaporator coil anywhere.
I know you are in FL and the weather is getting hot, perhaps you could clean and flush the old evaporator and reuse it as a last resort if @uglypitbull doesn't have any advice for you.
It seems that even the reputable parts suppliers are turning into a let down more each month that goes by.
FTE Chapter Leader
Joined: Jan 2005
Posts: 13,135
Likes: 4,732
From: Henderson, NV
Have you ever had any trouble putting a orfice tube in? Both my old orifice tube and new orifice tube slide right in my old evaporator but neither one of them will fully seat in my new evaporator tube. The tube on the EVAP doesn't look bent or anything, I took it directly out of the box and carefully installed it
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Fleet Owner
Joined: Jun 2004
Posts: 25,090
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From: Rio Rico, AZ.
@Kwikkordead which part of the orifice tube were you talking about trimming? Not sure I see anything that I could actually trim but open to suggestions
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Cargo Master
Joined: Sep 2015
Posts: 2,860
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My evaporator looked the same way. Absolutely amazing how it was still working.
As for the parts not fitting together properly. Maybe I missed it, but did you verify you received the correct part and part number? Not sure if there is a number printed on the evaporator coil anywhere.
I know you are in FL and the weather is getting hot, perhaps you could clean and flush the old evaporator and reuse it as a last resort if @uglypitbull doesn't have any advice for you.
It seems that even the reputable parts suppliers are turning into a let down more each month that goes by.
As for the parts not fitting together properly. Maybe I missed it, but did you verify you received the correct part and part number? Not sure if there is a number printed on the evaporator coil anywhere.
I know you are in FL and the weather is getting hot, perhaps you could clean and flush the old evaporator and reuse it as a last resort if @uglypitbull doesn't have any advice for you.
It seems that even the reputable parts suppliers are turning into a let down more each month that goes by.
Thread Starter
|
Cargo Master
Joined: Sep 2015
Posts: 2,860
Likes: 365
I will compare the old and new evaps once I pull the new one out but I did briefly put them side by side before installing the new one and they looked the same, also the new evap fit perfectly in the EVAP case on the truck. I'm at a loss, I guess the only thing I can do is pull it out and trade it in which means I have to miss work tomorrow as I got the part from a commercial parts house that isn't open on Sunday.
Hotshot
Joined: Mar 2014
Posts: 10,750
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From: Douglassville, PA
I will compare the old and new evaps once I pull the new one out but I did briefly put them side by side before installing the new one and they looked the same, also the new evap fit perfectly in the EVAP case on the truck. I'm at a loss, I guess the only thing I can do is pull it out and trade it in which means I have to miss work tomorrow as I got the part from a commercial parts house that isn't open on Sunday.
FTE Chapter Leader
Joined: Jan 2005
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From: Henderson, NV
Taxes. Don’t forget taxes. Oh and death also.
Banned
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The good news is you'll be pretty sharp on how to take apart the A/C system and put it back together when it finally gets ironed out. You open up the can of worms sometimes and the rabbit hole goes deeper than you thought it would. I just went through that with the exhaust system on mine. (Man do I hate exhaust systems...)
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
The good news is you'll be pretty sharp on how to take apart the A/C system and put it back together when it finally gets ironed out. You open up the can of worms sometimes and the rabbit hole goes deeper than you thought it would. I just went through that with the exhaust system on mine. (Man do I hate exhaust systems...)