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I have a 2005 F350 5.4L3V that feels like it is losing power…

Customer Question
Hi- I have a...

Hi- I have a 2005 F350 5.4L3V that feels like it is losing power when accelerating from a stop. There may be a misfire.

Mechanic's Assistant: How old is the transmission? Have you checked the fuel filters?

It is original to the truck

Mechanic's Assistant: Are you fixing your F350 yourself? What have you tried so far?

I havent tried anything yet

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

I dont think so

Submitted: 8 months ago.Category: Ford
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Answered in 4 minutes by:
11/18/2017
Ford Mechanic: Kenny Z., Ford Senior Master Tech replied 8 months ago
Kenny Z.
Kenny Z., Ford Senior Master Tech
Category: Ford
Satisfied Customers: 6,021
Experience: Auto Trans, Drivability and Electrical Specialist
Verified

Hello, my name is***** and thanks for your question.

How many miles on the truck? Does it only happen from a stop or will it act up when accelerating at cruise speeds also?

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Customer reply replied 8 months ago
Hi Kenny, I'm sorry I forgot to post the mileage. 190K . The majority of the times is from a stop. My concern is with the lack of power if I'm towing my dump trailer I'm afraid it would not make it up a hill.
Ford Mechanic: Kenny Z., Ford Senior Master Tech replied 8 months ago

When the lack of power happens does it feel like it is misfiring at that time?

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Customer reply replied 8 months ago
To be honest I do not know what a misfire feels like. I guess my description would be it feels like it is missing therefore I would assume that is a misfire. As I Am accelerating to 30 miles and faster it feels "choppy" if that makes sense .
Ford Mechanic: Kenny Z., Ford Senior Master Tech replied 8 months ago

Reid,

That sounds just like a misfire. The spark plugs on these 3V engines are notorious for misfire under load. I would get them changed out and reevaluate.

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Customer reply replied 8 months ago
Do the coils need to be replaced at the same time?
Ford Mechanic: Kenny Z., Ford Senior Master Tech replied 8 months ago

No, usually just the plugs.

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Ford Mechanic: Kenny Z., Ford Senior Master Tech replied 8 months ago

Did you need any further assistance?

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