Q: Truck running rough over 55 MPH.

asked by on

I have over 140,000 miles on my truck. The Engine light is on and it starts running rough when driving over 55 MPH. I have never had a tune-up performed on it.

I would have a technician come scan the codes on the computer and perform a tune up as well. Your spark plugs are recommended to be replaced at 30,000 miles. I would also replace your fuel filter as well. They have been known to clog up damaging the fuel pump and restricting flow to the injectors.

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. Truck running rough over 55 MPH.

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: When start out driving when accelerate does good to 2000 rpm and then when go to accelerate more it drops off and have to let off

Hello. From what you describe, it would appear that your vehicle is experiencing some sort of engine performance issues. Problems accelerating under load can be caused by many things. A few common causes are issues with the ignition, engine management,...

Q: Car making rattling sound

The problem is likely the catalytic converter deteriorating. This happens over time, and the catalyst will rattle around inside the steel housing. The noise is loudest at start up or while revving the engine. With the engine off and cooled off,...

Q: Fuel burns and car jumps when stopped

Whatever is causing your car to run rough is probably also causing it to drink gas. Look under the hood for any vacuum lines that may be off or in bad condition. It's surprising how many problems you can solve...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.