Skip the auto shop - Our mechanics make house calls

Q: I have a code P0171 and needs repairs.

asked by on

Loss of power and rough Idle and shaking and vivration How is this fixed

My car has 165000 miles.
My car has an automatic transmission.

Hi there. The code P0171 is caused by the engine getting too hot and not having enough fuel to burn. Check the fuel injectors, fuel pressure, and the fuel pump to see if they are working properly. Since the vehicle is running rough and shaking, then the fuel injectors are not working and are either not plunging or have something in them that is plugging them up. I recommend replacing any injector that is not spraying. If you need further assistance with your engine running rough, then seek out a professional, such as one from Your Mechanic, to help you.

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: Electrical or transmission problems with Hummer

Hi there. This vehicle is known for having a history of electrical issues. From the symptoms you are getting it sounds like a bad ignition switch or a failing body control module. Most of the time it is the ignition...

Q: Electrical issues with the gauges, interior lights, and rear wiper blade.

Hi there. When it comes to multiple systems and the electrical circuits malfunction, there is a power and ground issue. Check the battery cables and clean them with a tooth brush and baking soda with water. This will clean off...

Q: door lock problem

Hello. There is a computer that controls the door locks and the warning light that you see. It is known as the Body Control Module. Something has likely gone wrong with this module, which may or may not be repairable....

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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.