Truck reduced engine power
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Freshman User
Joined: Jan 2006
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From: Wisconsin
Truck reduced engine power
So I just went on a vacation pulling my horse trailer (first time leaving the state with this truck) and at about 5 hrs into the trip I had a message Reduced Engine Power and went from 70 on the interstate to 10 miles an hour and slowing rather quickly. I ended up shutting it off and restarting and it came back just like normal. I found the nearest ford dealer and they put the computer on it and it showed absolutely nothing, no codes and nothing wrong. The mechanic reset some things and we went on our way. Then I ended up getting a check engine light saturday. I found someone to read the code and it came up with P164A which is an O2 sensor, he was able to clear it and I put on probably 50 miles today and no check engine light. I have about a 10 hour drive back home. Still debating if I take it to ford near here if they will do anything now that it doesn't show a light?? I hate to chance getting broke down on the highway with a truck that will basically shut down like that?? It just doesn't make sense to me. Any input will be great. Thanks.
Senior User
Joined: Sep 2011
Posts: 305
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From: Colorado
You can thank the EPA, not Ford, for this insanity. All the manufacturers are still struggling to get reliability back into our diesels while meeting EPA standards. EPA mandated shutdowns on emissions sensor issues with some exemptions for emergency vehicles..
FTE Chapter Leader
Joined: Sep 2011
Posts: 63,191
Likes: 6,649
From: Great Falls, Montana
I have had: lack of power.....Forced power reduction.....Very low fuel mileage reading......fluctuating Turbo boost pressure.
Cure........
Stop. shutdown......wait 30 seconds.....restart.
I wait until the gauge pointers stop moving before starting.
Problem goes away. Talked with my service guy at the Ford dealer. He had heard the same from others. No suggestions other than what I did.
It's like rebooting a computer........Reboot the truck.
Cure........
Stop. shutdown......wait 30 seconds.....restart.
I wait until the gauge pointers stop moving before starting.
Problem goes away. Talked with my service guy at the Ford dealer. He had heard the same from others. No suggestions other than what I did.
It's like rebooting a computer........Reboot the truck.
5th Wheeling
Joined: Jul 2014
Posts: 41
Likes: 2
So I just went on a vacation pulling my horse trailer (first time leaving the state with this truck) and at about 5 hrs into the trip I had a message Reduced Engine Power and went from 70 on the interstate to 10 miles an hour and slowing rather quickly. I ended up shutting it off and restarting and it came back just like normal. I found the nearest ford dealer and they put the computer on it and it showed absolutely nothing, no codes and nothing wrong. The mechanic reset some things and we went on our way. Then I ended up getting a check engine light saturday. I found someone to read the code and it came up with P164A which is an O2 sensor, he was able to clear it and I put on probably 50 miles today and no check engine light. I have about a 10 hour drive back home. Still debating if I take it to ford near here if they will do anything now that it doesn't show a light?? I hate to chance getting broke down on the highway with a truck that will basically shut down like that?? It just doesn't make sense to me. Any input will be great. Thanks.
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Freshman User
Joined: Jan 2006
Posts: 47
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From: Wisconsin
My truck is a 2012, but my dealer said he had replaced several NOX sensors after the 2011's. After they reprogrammed the sensors it hasn't had a service light again, but it doesn't sound right now. Probably my imagination but when I take it in again I'm going to have them check the sensor and some other stuff. Thanks, Don.
FTE Chapter Leader
Joined: Sep 2011
Posts: 63,191
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From: Great Falls, Montana
Thanks for the up-date Don.
FYI: I just finished a 2500 mile trip towing a 42ft 5th wheel at 17K Lbs. Montana to central Oregon to coast of Oregon to North coast of Oregon to North central Washington to Montana (Great Falls)
The truck did GREAT !! pulled like there was no tomorrow. Home to home avg 9.7 mpg calculated. (dash said 9.9 mpg)
Early on after getting my truck, had sensor problems. Replaced and a new program. Life has been good.
FYI: I just finished a 2500 mile trip towing a 42ft 5th wheel at 17K Lbs. Montana to central Oregon to coast of Oregon to North coast of Oregon to North central Washington to Montana (Great Falls)
The truck did GREAT !! pulled like there was no tomorrow. Home to home avg 9.7 mpg calculated. (dash said 9.9 mpg)
Early on after getting my truck, had sensor problems. Replaced and a new program. Life has been good.
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FTE Chapter Leader
Joined: Sep 2011
Posts: 63,191
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From: Great Falls, Montana
Yep it does.........Dak
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