Skip the auto shop - Our mechanics make house calls

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?

A: There are several different things that cou...

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 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: Check engine light

You would need to list all the codes you received so we could help you isolate the problem. You may have a more major issue that needs to be diagnosed. I recommend having a mechanic come and diagnose the Check...

Q: Car losing power after warming up.

Hello, from your description on how it loses power then shuts off. I believe that you have fuel pump that is failing. A fuel pump is an electric pump, mounted inside the fuel tank, and as the pump runs it...

Q: Car lunged backward 10 feet in parking lot

My suggestion is to have a dealer look into it and see if they have a fix or even verify the cause of the complaint. You may have an active recall for your vehicle for the acceleration problem and the...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...