Reduced engine power light coming on - Ford Powerstroke Diesel Forum
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post #1 of 19 Old 03-24-2012, 02:39 PM Thread Starter
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Reduced engine power light coming on

So my reduced engine power light has been randomly coming on. Appears to only do it on highways? Came on today while I was towing on the highway. If I shut it off and restart it when i stop goes away but comes back when I get back on the highway. Any ideas? Still feels the same

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post #2 of 19 Old 04-13-2012, 03:59 PM
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Originally Posted by salnazzaro View Post
So my reduced engine power light has been randomly coming on. Appears to only do it on highways? Came on today while I was towing on the highway. If I shut it off and restart it when i stop goes away but comes back when I get back on the highway. Any ideas? Still feels the same
I've had the same happen a few times, it appears to have stopped since I changed both of my fuel filters. Could be coincidence.
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post #3 of 19 Old 04-13-2012, 06:50 PM
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Mine was doing that to it ended up needing one of the thermostats replaced. Hope this helps.
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post #4 of 19 Old 04-13-2012, 07:49 PM Thread Starter
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On thanks the info, I'll have my mechanic change the fuel filters because I'm due for them I think and I'll see what he says about the thermostats. Thanks!

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post #5 of 19 Old 04-15-2012, 08:47 AM
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I'd think you would have a dtc stored in the PCM that would give a clue about what is happening

Gun control is like trying to reduce drunk driving by making it tougher for sober people to own cars.
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post #6 of 19 Old 04-15-2012, 10:22 AM Thread Starter
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All my codes are for the tuner, losing communication and all that

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post #7 of 19 Old 04-16-2012, 09:38 AM Thread Starter
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Truck goes in Wednesday for a new thermostat and new fuel filters so we'll see what happens. Hopefully this does the trick!

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post #8 of 19 Old 04-21-2012, 04:03 AM Thread Starter
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Well my mechanic didn't want to do the thermostats due to the fact of removing the egr so I guess I'll have to do them when I do my egr delete. Fuel filters were done and the light came on this morning still on my way to work

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post #9 of 19 Old 04-21-2012, 02:57 PM
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Yup, mine came on with a nice hard run on my way to work this morning too. Damn... I think mine is coming on from "overboost"... doesn't really happen until my boost needle is buried. Never happens in normal driving.
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post #10 of 19 Old 04-21-2012, 04:44 PM Thread Starter
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Mine happens alot when I'm on highways for some reason, I don't really accelerate hard but the boost needle is buried at 40psi getting up to speed or passing. It's been doing it alot lately, it used to be every once in a while.

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