Skip the auto shop - Our mechanics make house calls

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.

A: I would have a technician come scan the cod...

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?

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: My 3 year old water pump is leaking. Is it covered under warranty?

Whether Pep Boys should warranty the water pump or not is only dependent on the warranty details. I can say that most warranties from repair shops are for twelve months and 12,000 miles. You will need to refer to the...

Q: 4 wheel drive will not engage 2010 Ford F150 4WD

Hello - it sounds like the 4WD-High actuator is not successfully engaging High-range as expected. There are many possible causes, bad servo actuator, transfer gear mis-alignment, transfer shift fork wear. For assistance, I would recommend transfer case inspection by a...

Q: My car hesitates and I have to press on gas hard for it to kind of smooth on out.

Typically, what you are describing is due to an engine management fault(s) and such faults occur in ignition system components, the fuel system, and/or the air induction system. A possible first approach is to just simply make sure that the...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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...