Skip the auto shop - Our mechanics make house calls

Q: Car running rough

asked by on

I don't think my car is running right. There is a warning light that comes on saying Restricted Performance, and my car runs rough when it does.

A: When your engine computer sees a problem wi...

When your engine computer sees a problem with a major sensor or sees that an engine is misfiring, the computer will turn on the restricted performance statement with a red or amber light. The problem may be one of several, and may limit RPM’s to less than 3000. I recommend you seek a mobile mechanic, such as one from YourMechanic, to come and test your vehicle for you. The computer will need to be scanned for any warning lights and any codes diagnosed.

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: Is it a Good Idea to Get Oversized Wheels and Tires for My Car or Truck?

Your vehicle was initially designed with a specific wheel and tire combination that the manufacturer of the vehicle felt was best suited for safety and performance. Many times, the wheels and tires that come with a vehicle may seem too...

Q: Car misfires when the weather is cold and while idling

Hello. Thanks for writing in about your 2000 Lexus SC400. It may be necessary to replace all of the ignition coils in addition to having the ignition coil wiring inspected for damage in order to determine why your engine is...

Q: Car runs rough and shuts off - 1990 BMW 750iL

Without some additional symptoms, this is hard to say. If the car runs smoothly when warm, this would reflect a "cold start" problem with the engine. If the transmission shifts harshly either cold or hot, the transmission may need repair...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...