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?

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 1,000 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
  1. Home
  2. Questions
  3. Lost power driving in traffic

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: Transmission problems

Hello. From what you describe it would appear that your vehicle is experiencing serious transmission issues. Delayed engagement accompanied with shaking is a common sign that the transmission may be worn. If the transmission clutches, the torque converter, or the...

Q: How do I use the Uconnect voice training system?

If your Uconnect is having a hard time recognizing what are saying, then you can use the voice training feature. This will help your Uconnect system recognize your voice. You can turn on the voice training system in four different...

Q: How do I properly wash my truck?

Your truck will need to be cleaned regularly. To ensure proper results, do not use any non-recommended car wash or towels. To clean your 2012 Ford F-150. Rinse your vehicle with lukewarm water. Spray off the underbody and clear...

Related articles

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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...