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?
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: Q: How do you open the trunk?

Your car’s trunk offers the single largest amount of storage space anywhere in the vehicle. It’s important that you’re able to access it easily, as well. While you can certainly use the key to unlock and open it, there’s an...

Q: I'm getting 8.9 mpg in the city and around 12 mpg on the highway.

Hello. If they replaced your piston rings and the problem has persisted, then it is likely that the problem was not related to the piston rings. Most fuel issues are related to engine performance or fuel system problems. A tune...

Q: Shaking noise when the truck idles, worse when it first starts

(Answer assuming it is a 5.4 Triton Engine) This complaint is one of the most common I have heard over and over again for the Ford F-series trucks with the 5.4 Triton engine and covers many other years besides just...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
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...