Question about 2008 Ford F 450 Super Duty

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My 2008 ford f 450 losr power while driving and want go over 75 mph

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The following are the general instructions on the start of diagnosing any electronically controlled engine or transmission problem.

The engine and the automatic transmission (transmission control is only for automatics, engine is still computer controlled no matter the transmission type) in this vehicle are computer controlled and in most cases when a fault occurs a fault code is stored in the memory of the computer control module. There are exception to this, such as the Mass Airflow Meter and fuel pressure problems. What must be done is to have all the basic testing done such as a scan of the system for fault codes as well as a check with a live data scanner tool for engine functions that are not within range of normal, a trained technician is required to know what is correct and what isn't, then based on careful diagnostics done from a factory repair manual the correct part is replaced or the wiring repaired or the computer replaced (known as the PCM), which is very rarely the problem. Other basic checks must be done as well such as mechanical problems with the engine as well as engine state of tune and mileage on the engine. The transmission can have mechanical issues as well such as no gear engagement at all or a failed pump or other pressure related problems. Also engine mechanical problems can and do cause many drive-ability related problem such as rough idle and other symptoms.

Posted on Oct 26, 2012

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Posted on Jan 02, 2017

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SOURCE: I have shuttering vibation when driving at 60 to 75 mph

There is a recall per my dealership. I have a 2004 F150 that was just doing the same thing this past week. I changed all four tires, alignment, etc. with no results. Finally found out that there is a recall for the emergency brake cable system. Even if the brakes were not on it would vibrate and would seem like I had a flat tire. My truck is in the shop today being fixed and I will know more when I pick it up if there is any additional problems as a result of this. So far, I need to pay to have new rear breaks. Good luck!

Posted on May 07, 2009

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