Q: Car begins to decelerate and lose power as im driving.

asked by on

After driving a little my car begins to jerk and lose power to the engine. I was pressing the gas all the way down but my car was only going around 5 mph. Also at very slow speeds it cuts off completely amd i have to re start my car. Any advice will help. Thank you

My car has 180000 miles.
My car has an automatic transmission.

Hi there. The most common cause of this on your car is either a restriction in the exhaust caused by a failing catalytic converter, or a fuel system issue. Low fuel pressure will cause this and that would typically be due to a failing fuel pump. I typically start by testing the fuel pressure when this is occurring to see if it is falling off. If it is then the fuel pump is more than likely failing. If not then I check the backpressure form the exhaust to see if it is restricted. If it is then the converter needs to be checked and replaced. I have also seen the turbo fail on this vehicle and cause this, but that is not as common. If you would like to have this power loss and stalling problem checked out, consider YourMechanic, as a certified mechanic can come to your home or office to [diagnose why it is losing power] https://www.yourmechanic.com/services/loss-of-power-inspection

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Car begins to decelerate and lose power as im driving.

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: how much shop time is listed to replace a convertible on a 95 chrysler lebaron

Hi there. Replacing a convertible top is really dependent upon the experience of the mechanic and the shop where the service is being completed. In most cases, the service will take anywhere from 4 to 8 hours of shop time,...

Q: Car not starting after radiator hose blew off

There may be a number of reasons that may cause the car not to start that may be connected to the radiator hose blowing off. If the hose blew off while driving, this suggests the car may have been overheating...

Q: Car makes clacking noise.

With these symptoms it sounds like you have two different problems. Firstly, the clacking noise on deceleration is most likely the turbo control valve flapping, which may have a bad valve. The noise when pressing on the brakes means that...

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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.