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2009 F150 AC debris flush (any suggestions) #4661589
02/10/18 05:47 AM
02/10/18 05:47 AM
Joined: Feb 2003
Posts: 7,693
Jupiter, Florida
Cujet Offline OP
Cujet  Offline OP
Joined: Feb 2003
Posts: 7,693
Jupiter, Florida
My 2009 F150 4x4 Supercrew AC compressor destroyed itself. Clearly, the low pressure lines are chock a block full of metallic debris/powder. Strangely, the high pressure side is visibly clean, although I'm sure it's also contaminated.

I've removed some lines for cleaning. But not yet the lines from the evaporator.

I'm concerned the evaporator is full of debris. I'll try various methods to flush it out, but I'd love suggestions. For those who don't know, the evaporator lines disconnect at the firewall. So I could fabricate something to flush from there.


People who count on their fingers should maintain a discreet silence.
Re: 2009 F150 AC debris flush (any suggestions) [Re: Cujet] #4661592
02/10/18 05:56 AM
02/10/18 05:56 AM
Joined: Sep 2013
Posts: 10,691
Indiana
dlundblad Online happy
dlundblad  Online Happy
Joined: Sep 2013
Posts: 10,691
Indiana
Some treat it as a heater core and gently flush it with compressed air and the citric flush solution while in the vehicle, but I've read it technically needs to be taken out. I would personally try avoiding the latter.

Hook a hose up to the bottom line and run it into a container so you can catch and see whatever debris you've flushed.

Last edited by dlundblad; 02/10/18 05:56 AM.

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Re: 2009 F150 AC debris flush (any suggestions) [Re: Cujet] #4661640
02/10/18 07:33 AM
02/10/18 07:33 AM
Joined: Feb 2003
Posts: 7,693
Jupiter, Florida
Cujet Offline OP
Cujet  Offline OP
Joined: Feb 2003
Posts: 7,693
Jupiter, Florida
That's a good idea. I'm not happy about wasting a week taking the dashboard out to replace the evaporator.


People who count on their fingers should maintain a discreet silence.
Re: 2009 F150 AC debris flush (any suggestions) [Re: Cujet] #4661701
02/10/18 08:55 AM
02/10/18 08:55 AM
Joined: Jun 2002
Posts: 12,648
The Motor City
Kestas Online content
Kestas  Online Content
Joined: Jun 2002
Posts: 12,648
The Motor City
Debris is usually flushed out of a/c parts using mineral spirits, and finished with lacquer thinner or alcohol.

Re: 2009 F150 AC debris flush (any suggestions) [Re: Cujet] #4661713
02/10/18 09:04 AM
02/10/18 09:04 AM
Joined: Jun 2003
Posts: 17,837
Deplorable in apple valley, ca
Chris142 Offline
Chris142  Offline
Joined: Jun 2003
Posts: 17,837
Deplorable in apple valley, ca
AC solvent and dry air is what we use. If it's as bad as you say every component under the hood must be replaced including the hoses.


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Re: 2009 F150 AC debris flush (any suggestions) [Re: Chris142] #4661758
02/10/18 09:49 AM
02/10/18 09:49 AM
Joined: Oct 2014
Posts: 12,585
Idaho
CT8 Offline
CT8  Offline
Joined: Oct 2014
Posts: 12,585
Idaho
Chris I am showing my age do people still install inline filters to catch the debris?


2015 Ford F150 2.7
2018 Ford F350 6.2
Re: 2009 F150 AC debris flush (any suggestions) [Re: Cujet] #4661799
02/10/18 10:15 AM
02/10/18 10:15 AM
Joined: Jun 2002
Posts: 12,648
The Motor City
Kestas Online content
Kestas  Online Content
Joined: Jun 2002
Posts: 12,648
The Motor City
I wouldn't be surprised if there was a filter (screen) just before the compressor inlet.

Re: 2009 F150 AC debris flush (any suggestions) [Re: Cujet] #4661842
02/10/18 10:54 AM
02/10/18 10:54 AM
Joined: May 2013
Posts: 152
Peace valley, Missouri
Fitter30 Offline
Fitter30  Offline
Joined: May 2013
Posts: 152
Peace valley, Missouri
There should be a screen entering side of expansion value or orifice that should stop anything large from entering evaporator. Replace condenser is a must and only use ac flush. Autozone has the flush and the tool(loaner program) to put it in.

Re: 2009 F150 AC debris flush (any suggestions) [Re: Cujet] #4661849
02/10/18 10:58 AM
02/10/18 10:58 AM
Joined: Apr 2014
Posts: 1,898
Spring,Texas
Bud_One Offline
Bud_One  Offline
Joined: Apr 2014
Posts: 1,898
Spring,Texas
Denatured alcohol is what we used to use to flush the lines. Maybe this will work in the evaporator.

Does your a/c have an expansion valve ?
If it does, you may need to replace it also.
We never had luck flushing those out.

Last edited by Bud_One; 02/10/18 10:58 AM.

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Re: 2009 F150 AC debris flush (any suggestions) [Re: CT8] #4661872
02/10/18 11:24 AM
02/10/18 11:24 AM
Joined: Jun 2003
Posts: 17,837
Deplorable in apple valley, ca
Chris142 Offline
Chris142  Offline
Joined: Jun 2003
Posts: 17,837
Deplorable in apple valley, ca
Originally Posted By: CT8
Chris I am showing my age do people still install inline filters to catch the debris?
not as much as they used to. The special hoses and tight quarters make filters hard to fit.

Last edited by Chris142; 02/10/18 11:25 AM.

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Re: 2009 F150 AC debris flush (any suggestions) [Re: Cujet] #4661875
02/10/18 11:26 AM
02/10/18 11:26 AM
Joined: Jun 2003
Posts: 17,837
Deplorable in apple valley, ca
Chris142 Offline
Chris142  Offline
Joined: Jun 2003
Posts: 17,837
Deplorable in apple valley, ca
I use ac flush followed by brackleaner


02 Wrangler carlube 5w30
87 F250 traveler 15w40
07 fjcruiser Chevron 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor 15w40
Re: 2009 F150 AC debris flush (any suggestions) [Re: Cujet] #4661892
02/10/18 11:36 AM
02/10/18 11:36 AM
Joined: Dec 2016
Posts: 7,191
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 7,191
Waco, TX
Originally Posted By: Cujet
the low pressure lines are chock a block full of metallic debris/powder. Strangely, the high pressure side is visibly clean, although I'm sure it's also contaminated.


Usually, it's the other way around: compressor dies and contaminates the high pressure side, requiring condenser replacement.

The evaporator almost never gets contaminated, unless the restrictor orifice is blown out.

Originally Posted By: Kestas
Debris is usually flushed out of a/c parts using mineral spirits, and finished with lacquer thinner or alcohol.


Yes, whatever will dissolve the oil used.


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: 2009 F150 AC debris flush (any suggestions) [Re: CT8] #4661894
02/10/18 11:37 AM
02/10/18 11:37 AM
Joined: Dec 2016
Posts: 7,191
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 7,191
Waco, TX
Originally Posted By: CT8
Chris I am showing my age do people still install inline filters to catch the debris?


That's the job of the receiver/dryer.


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: 2009 F150 AC debris flush (any suggestions) [Re: Cujet] #4662289
02/10/18 07:53 PM
02/10/18 07:53 PM
Joined: May 2012
Posts: 5,681
Fort Lauderdale, FL
DoubleWasp Offline
DoubleWasp  Offline
Joined: May 2012
Posts: 5,681
Fort Lauderdale, FL
We do a lot of "completely blown" systems in trucks. In Florida, in the [censored] trucks, it's real popular.

Condenser is gone. Don't bother inspecting or cleaning. Just toss that thing.

Orifice tube or expansion valve is gone. Toss it.

Toss the receiver/drier too.

Flush using AC flush (most auto parts stores have it in a can, which makes it easy), then finish by flushing with denatured alcohol, and then a lot of dry compressed air.

The hoses should be fine, so long as they don't have any "mufflers" or filters.


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Re: 2009 F150 AC debris flush (any suggestions) [Re: DoubleWasp] #4662602
02/11/18 08:30 AM
02/11/18 08:30 AM
Joined: Feb 2003
Posts: 7,693
Jupiter, Florida
Cujet Offline OP
Cujet  Offline OP
Joined: Feb 2003
Posts: 7,693
Jupiter, Florida
Originally Posted By: DoubleWasp
We do a lot of "completely blown" systems in trucks. In Florida, in the [censored] trucks, it's real popular.

Condenser is gone. Don't bother inspecting or cleaning. Just toss that thing.

Orifice tube or expansion valve is gone. Toss it.

Toss the receiver/drier too.

Flush using AC flush (most auto parts stores have it in a can, which makes it easy), then finish by flushing with denatured alcohol, and then a lot of dry compressed air.

The hoses should be fine, so long as they don't have any "mufflers" or filters.


Thank you for the input. The compressor discharge hose has a small accumulator/filter/canister on it. I'm sure it has debris inside. But I'm not sure what that canister really is. Maybe I'll cut it apart and find out.

The condenser has the R/D located on the inlet side, internal to the condenser.


People who count on their fingers should maintain a discreet silence.
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