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.

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!
  1. Home
  2. Questions
  3. Car running rough

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: Will a after market performance chip increase my horse power? Will it pass smog?

If you live in California or any jurisdiction that regulates these aftermarket products, the first thing to check is whether the California Air Resources Board (CARB) has "registered" or "approved" the product. If no approval exists, particularly in California, that...

Q: Gas not making it to carburetor or fuel pump

A fuel pressure test will have to be conducted to see if enough fuel pressure is making its way to the fuel injection system. If not, the problem could be a bad fuel pump or a power to the fuel...

Q: My car has a duel fuel system and it sometimes runs rough

This is a common problem with duel fuel conversions. When you start the car, be sure it warms up on gasoline/petrol. Oftentimes, what happens is the LPG fuel conversion kicks in later while still running on petrol/gasoline, essentially fueling the...

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...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...