AC system
Fleet Owner
Joined: Apr 2012
Posts: 27,307
Likes: 549
From: Spanaway
Your very welcome.
Let me know if I missed something or you need other info.
Also like I said U nay of uploaded some duplicates with s
different name on them. Lots of things to read. Some things
are very short 1 page things like most of the 412-00 stuff.
Let me know if I missed something or you need other info.
Also like I said U nay of uploaded some duplicates with s
different name on them. Lots of things to read. Some things
are very short 1 page things like most of the 412-00 stuff.
Hotshot
Joined: Jul 2005
Posts: 13,834
Likes: 25
From: Middle Tn.
Thread Starter
|
Senior User
Joined: Jul 2016
Posts: 457
Likes: 0
So new parts in regular AC works great. However, my AC short cycles on max ac. Any thoughts?? Replaced dryer, condensor, and orifice tube.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!
Joe Kucinski
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!
Michael S. Palmer
The Best F-150 Deal of Every Trim Level (XL through Raptor)
Joe Kucinski
Fleet Owner
Joined: Apr 2012
Posts: 27,307
Likes: 549
From: Spanaway
I had a reply all done and went and lost it.
I am not very well versed in A/C but it sounds like a pressure
issue going on. The system will shut down on a HIGH or a LOW.
Time for an A/C manifold gauge set and some knowledge.
You should be able to pull some DTCs from the system.
Most of the auto part stores can't read the Ford specific DTC set
very well if at all. The app for the ELM device FORScan should
be able to read any DTCs stored by A/C system faults. Also
if you have the EACT you can read some of the codes in it's display.
Found the info on the EACT self test.
https://www.ford-trucks.com/forums/1...nd-shakes.html
Originally posted by member RobertA from explorerforum.com
”Listed below is the EATC Module Self Test instructions that I followed. Also, if you don't have an
actuator from the dealer, I recommend to get one. The one that I got from Doorman did not work
for me nor for a colleague of mine.
By the way the DTC code that I got from running this test was 025, which is Intermittent Run - time
Fault for hte Blend door actuator. You might also get a DTC code of 024, which is Self-Test Fault for
the blend door actuator. If there is a fault a three digit number will be displayed where the temperature
is usually displayed on the ATC. Good Luck
• lThe EATC module self-test will not detect concerns associated with data link messages like engine c
oolant temperature or vehicle speed signals. A NGS tester must be used to retrieve these concerns.
• The EATC module self-test will detect concerns in the system control functions and will display
hard Diagnostic Trouble Codes (DTC) in addition to intermittent diagnostic trouble codes for concerns
that occur during system operation. The vehicle interior temperature should be between 4º-32ºC (40-90ºF)
when performing the self-test. If the temperatures are not within the specified ranges, false
in-car temperature sensor DTCs will be displayed.
• The self-test can be initiated at any time. Normal operation of the system stops when the self-test is activated.
• To enter the self-test, press the OFF and FLOOR buttons simultaneously and then press the
AUTOMATIC button within two seconds. The display will show a pulse tracer going around the
center of the display window. The test may run as long as 30 seconds. Record all DTCs displayed.
• If any DTCs appear during the self-test, follow the diagnostics procedure given under ACTION for each DTC given.
• If a condition exists but no DTCs appear during the self-test, refer to the Symptom
Chart Condition: The EATC System Is Inoperative, Intermittent or Improper Operation.
• To exit self-test and retain all intermittent DTCs, push the blue (cooler) button. The control
will exit self-test, retain all intermittent diagnostic trouble codes and then turn OFF (display blank).
• To exit self-test and clear all diagnostic trouble codes, press the DEFROST button. The vacuum
fluorescent display window will show 888 and all function symbols for one second. Then, the EATC
control assembly will turn OFF (display blank) and all DTCs will be cleared.
• Always exit the self-test before powering the system down (system turned OFF).
• Intermittent DTCs will be deleted after 80 ignition switch ON cycles after the intermittent condition occurs.”
I hope that this info helps you out.
If not I would find someone that knows more about A/C systems in automobiles.
I am not very well versed in A/C but it sounds like a pressure
issue going on. The system will shut down on a HIGH or a LOW.
Time for an A/C manifold gauge set and some knowledge.
You should be able to pull some DTCs from the system.
Most of the auto part stores can't read the Ford specific DTC set
very well if at all. The app for the ELM device FORScan should
be able to read any DTCs stored by A/C system faults. Also
if you have the EACT you can read some of the codes in it's display.
Found the info on the EACT self test.
https://www.ford-trucks.com/forums/1...nd-shakes.html
Originally posted by member RobertA from explorerforum.com
”Listed below is the EATC Module Self Test instructions that I followed. Also, if you don't have an
actuator from the dealer, I recommend to get one. The one that I got from Doorman did not work
for me nor for a colleague of mine.
By the way the DTC code that I got from running this test was 025, which is Intermittent Run - time
Fault for hte Blend door actuator. You might also get a DTC code of 024, which is Self-Test Fault for
the blend door actuator. If there is a fault a three digit number will be displayed where the temperature
is usually displayed on the ATC. Good Luck
• lThe EATC module self-test will not detect concerns associated with data link messages like engine c
oolant temperature or vehicle speed signals. A NGS tester must be used to retrieve these concerns.
• The EATC module self-test will detect concerns in the system control functions and will display
hard Diagnostic Trouble Codes (DTC) in addition to intermittent diagnostic trouble codes for concerns
that occur during system operation. The vehicle interior temperature should be between 4º-32ºC (40-90ºF)
when performing the self-test. If the temperatures are not within the specified ranges, false
in-car temperature sensor DTCs will be displayed.
• The self-test can be initiated at any time. Normal operation of the system stops when the self-test is activated.
• To enter the self-test, press the OFF and FLOOR buttons simultaneously and then press the
AUTOMATIC button within two seconds. The display will show a pulse tracer going around the
center of the display window. The test may run as long as 30 seconds. Record all DTCs displayed.
• If any DTCs appear during the self-test, follow the diagnostics procedure given under ACTION for each DTC given.
• If a condition exists but no DTCs appear during the self-test, refer to the Symptom
Chart Condition: The EATC System Is Inoperative, Intermittent or Improper Operation.
• To exit self-test and retain all intermittent DTCs, push the blue (cooler) button. The control
will exit self-test, retain all intermittent diagnostic trouble codes and then turn OFF (display blank).
• To exit self-test and clear all diagnostic trouble codes, press the DEFROST button. The vacuum
fluorescent display window will show 888 and all function symbols for one second. Then, the EATC
control assembly will turn OFF (display blank) and all DTCs will be cleared.
• Always exit the self-test before powering the system down (system turned OFF).
• Intermittent DTCs will be deleted after 80 ignition switch ON cycles after the intermittent condition occurs.”
I hope that this info helps you out.
If not I would find someone that knows more about A/C systems in automobiles.
Thread Starter
|
Senior User
Joined: Jul 2016
Posts: 457
Likes: 0
I had a reply all done and went and lost it.
I am not very well versed in A/C but it sounds like a pressure
issue going on. The system will shut down on a HIGH or a LOW.
Time for an A/C manifold gauge set and some knowledge.
You should be able to pull some DTCs from the system.
Most of the auto part stores can't read the Ford specific DTC set
very well if at all. The app for the ELM device FORScan should
be able to read any DTCs stored by A/C system faults. Also
if you have the EACT you can read some of the codes in it's display.
Found the info on the EACT self test.
https://www.ford-trucks.com/forums/1...nd-shakes.html
Originally posted by member RobertA from explorerforum.com
”Listed below is the EATC Module Self Test instructions that I followed. Also, if you don't have an
actuator from the dealer, I recommend to get one. The one that I got from Doorman did not work
for me nor for a colleague of mine.
By the way the DTC code that I got from running this test was 025, which is Intermittent Run - time
Fault for hte Blend door actuator. You might also get a DTC code of 024, which is Self-Test Fault for
the blend door actuator. If there is a fault a three digit number will be displayed where the temperature
is usually displayed on the ATC. Good Luck
• lThe EATC module self-test will not detect concerns associated with data link messages like engine c
oolant temperature or vehicle speed signals. A NGS tester must be used to retrieve these concerns.
• The EATC module self-test will detect concerns in the system control functions and will display
hard Diagnostic Trouble Codes (DTC) in addition to intermittent diagnostic trouble codes for concerns
that occur during system operation. The vehicle interior temperature should be between 4º-32ºC (40-90ºF)
when performing the self-test. If the temperatures are not within the specified ranges, false
in-car temperature sensor DTCs will be displayed.
• The self-test can be initiated at any time. Normal operation of the system stops when the self-test is activated.
• To enter the self-test, press the OFF and FLOOR buttons simultaneously and then press the
AUTOMATIC button within two seconds. The display will show a pulse tracer going around the
center of the display window. The test may run as long as 30 seconds. Record all DTCs displayed.
• If any DTCs appear during the self-test, follow the diagnostics procedure given under ACTION for each DTC given.
• If a condition exists but no DTCs appear during the self-test, refer to the Symptom
Chart Condition: The EATC System Is Inoperative, Intermittent or Improper Operation.
• To exit self-test and retain all intermittent DTCs, push the blue (cooler) button. The control
will exit self-test, retain all intermittent diagnostic trouble codes and then turn OFF (display blank).
• To exit self-test and clear all diagnostic trouble codes, press the DEFROST button. The vacuum
fluorescent display window will show 888 and all function symbols for one second. Then, the EATC
control assembly will turn OFF (display blank) and all DTCs will be cleared.
• Always exit the self-test before powering the system down (system turned OFF).
• Intermittent DTCs will be deleted after 80 ignition switch ON cycles after the intermittent condition occurs.”
I hope that this info helps you out.
If not I would find someone that knows more about A/C systems in automobiles.
I am not very well versed in A/C but it sounds like a pressure
issue going on. The system will shut down on a HIGH or a LOW.
Time for an A/C manifold gauge set and some knowledge.
You should be able to pull some DTCs from the system.
Most of the auto part stores can't read the Ford specific DTC set
very well if at all. The app for the ELM device FORScan should
be able to read any DTCs stored by A/C system faults. Also
if you have the EACT you can read some of the codes in it's display.
Found the info on the EACT self test.
https://www.ford-trucks.com/forums/1...nd-shakes.html
Originally posted by member RobertA from explorerforum.com
”Listed below is the EATC Module Self Test instructions that I followed. Also, if you don't have an
actuator from the dealer, I recommend to get one. The one that I got from Doorman did not work
for me nor for a colleague of mine.
By the way the DTC code that I got from running this test was 025, which is Intermittent Run - time
Fault for hte Blend door actuator. You might also get a DTC code of 024, which is Self-Test Fault for
the blend door actuator. If there is a fault a three digit number will be displayed where the temperature
is usually displayed on the ATC. Good Luck
• lThe EATC module self-test will not detect concerns associated with data link messages like engine c
oolant temperature or vehicle speed signals. A NGS tester must be used to retrieve these concerns.
• The EATC module self-test will detect concerns in the system control functions and will display
hard Diagnostic Trouble Codes (DTC) in addition to intermittent diagnostic trouble codes for concerns
that occur during system operation. The vehicle interior temperature should be between 4º-32ºC (40-90ºF)
when performing the self-test. If the temperatures are not within the specified ranges, false
in-car temperature sensor DTCs will be displayed.
• The self-test can be initiated at any time. Normal operation of the system stops when the self-test is activated.
• To enter the self-test, press the OFF and FLOOR buttons simultaneously and then press the
AUTOMATIC button within two seconds. The display will show a pulse tracer going around the
center of the display window. The test may run as long as 30 seconds. Record all DTCs displayed.
• If any DTCs appear during the self-test, follow the diagnostics procedure given under ACTION for each DTC given.
• If a condition exists but no DTCs appear during the self-test, refer to the Symptom
Chart Condition: The EATC System Is Inoperative, Intermittent or Improper Operation.
• To exit self-test and retain all intermittent DTCs, push the blue (cooler) button. The control
will exit self-test, retain all intermittent diagnostic trouble codes and then turn OFF (display blank).
• To exit self-test and clear all diagnostic trouble codes, press the DEFROST button. The vacuum
fluorescent display window will show 888 and all function symbols for one second. Then, the EATC
control assembly will turn OFF (display blank) and all DTCs will be cleared.
• Always exit the self-test before powering the system down (system turned OFF).
• Intermittent DTCs will be deleted after 80 ignition switch ON cycles after the intermittent condition occurs.”
I hope that this info helps you out.
If not I would find someone that knows more about A/C systems in automobiles.
Thread Starter
|
Senior User
Joined: Jul 2016
Posts: 457
Likes: 0
Real quick also "max ac" is just recirculation of cabin air yes? Where does it physically pull from? I wonder if I have an actual clog somewhere. And do we have a cabin air filter in these trucks and if so where or is there somewhere specific it draws air in I could clean? Just thinking of possibilities
Thread Starter
|
Senior User
Joined: Jul 2016
Posts: 457
Likes: 0
ok thanks. I just talked to my guy and it short cycles bad in max ac but no issues in ac so not a charge issue but we are gonna throw gauges back on it at lunch with it in high idle to check pressures just to be sure. I'm also just gonna replace the controls maybe that will help.