Q: Engine power reduction

asked by on

After being in a stop position, like at a stop sign, when I accelerate my Impala, it lunges forward. Now, the car's 'Check Engine Light' is coming on, plus a message: 'Reduced Engine Power'. I have tried restarting my car, but it doesn't always work. Sometimes I have to drive with reduced power/speed. What is causing these problems?

There are several different things that could possibly be causing this issue. One of the more likely causes would be a fuel or ignition problem causing the transmission to react differently than if the engine were running normally. The Check Engine Light always comes on quickly when one of these issues exists. It is also quite possible that a catalytic converter could be failing, causing the same issue.

My best recommendation would be to get multiple opinions. YourMechanic offers mobile mechanics that will come to your home and inspect your vehicle’s loss of power condition. This could be another way to generate a second opinion. A full inspection of the fuel, ignition, and exhaust systems is recommended for best results in the diagnosis of this issue.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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. Engine power reduction

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: Secondary coil replacement for a 2007 ES 350 Lexus

Hi there. That code is set when the primary or secondary circuit for the specified coil has failed. If you are not experiencing any drivability concerns, then it is most likely that the circuit has not failed to the point...

Q: Loss of power like misfire under any load

Hello. To start, you mentioned that you had switched out the fuel injectors. Have you checked the fuel pump and filter? Being 16 years old, the vehicle may be struggling due to lack of fuel pressure. The Check Engine...

Q: When driving under 40 mph my car has started to sound like something is stuck in the engine.

Our mobile experts are well-equipped and ready to assist you with your vehicle's concerns. A noise while driving can be several things like a wheel bearing, a worn belt, or some other failing component of the vehicle. It is not...

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...
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...