Skip the auto shop - Our mechanics make house calls

Q: Lost power driving in traffic

asked by on

I have a 2012 Ford F-150 XLT Ecoboost 3.5L V6, automatic transmission, with 47,000 miles. I was merging into traffic with a very short merge area, and traffic was going at speed behind me when I went to accelerate. At this point it felt like I lost power to the engine. Then when I attempted to get more power, the check engine light started blinking and the engine started shaking. This was after a very heavy rainfall and driving for a couple hours, if that helps. I was able to get the car home, but what happened there?

A: This model year F-150 engine has had a few ...

This model year F-150 engine has had a few concerns that relate to the problem you are having. The first step in diagnosis is to verify if problem only happens during wet, damp or humid conditions. YourMechanic will then need to scan the computer power train module for codes. If codes P0304 through P0306 are present with or without P0430 then TSB(Ford Technical Service Bulletin) 13-81 dated August 5th 2013 will have to be performed. This TSB checks the part number for the charge air cooler. If the part number is BL34-9L440-AE, then the TSB does not apply and normal ignition diagnosis applies. Otherwise an air deflector needs to be installed, and if engine code P0430 was present, then the left exhaust catalyst replaced. There is one other TSB that may apply, TSB 14-0180 dated September 26, 2014. It calls for testing the PCM for misfire codes P0300 through P0306 that indicate misfiring of cylinders, which might be due to carbon tracking on spark plugs and the boots for the coils. If any of these codes are present and the TSB 13-81 is completed, then all spark plugs will need to be removed and inspected for carbon tracking on plugs, boots and coils. The TSB calls for replacement of all spark plugs and boots, then clearing codes and road testing to verify the concern was fixed.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Car not starting after replacing parts

You have thrown a lot of parts at this issue. The problem may be with the ignition key. When cranking, take note of the instrument panel. See if the security light is flashing or if the odometer shows ---------- where...

Q: Do I need to replace the rotors on my 2012 focus EVERY TIME I has pad replaced?

You should not have to replace the rotors every time the pads are done. You should use a fine sand paper to clean surface of rotor so it can seat into the new pads. You will need to replace the...

Q: How do I remove the rear camera?

The rear camera helps you reverse your vehicle effectively. The camera is located to the left of the tow hitch, and can be removed with these steps. Open the tailgate. Locate the rear camera harness, placed between the...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...