Car Not Accelerating

Weak acceleration, poor engine performance, and reduced fuel economy can all be signs of a problem with the mechanical system in your Fiat. If your Fiat starts to exhibit symptoms such as sluggish acceleration or rough idling, it may be time for a visit to the mechanic. Even before you book an appointment for service, however, you may be able to get a sense of what's wrong with your car. These top four explanations may be the cause of your vehicle's concerns.

Dirty Oxygen Sensor or Mass Air Flow Sensor

The engine relies on a few different sensors to help maintain and maximize its performance capabilities. Two sensors that are critical to the engine's performance are the oxygen and airflow sensors. The oxygen sensor makes sure that the engine receives an adequate amount of clean and filtered air to help the car perform at its best. The mass airflow sensor ensures that the engine has the proper mix of air and fuel to help your vehicle run smoothly and efficiently. If either of the sensors becomes covered with dirt or debris, they can impair the engine's ability to perform at its peak, affecting its acceleration.

Malfunctioning Throttle Position Sensor

The throttle position sensor, commonly abbreviated as TPS, is a small component that is easy to overlook in the engine. The TPS regulates how much fuel the engine receives, and its main role is to make sure that the engine has adequate supplies of fuel at all times. If the sensors break or get dirty, the engine won't run as smoothly. You may notice changes in the car's acceleration and the way that it runs in general. A broken TPS should be replaced by a mechanic as soon as possible.

Clogged Fuel Filter

The fuel filter is a vital component in maximizing the health of your car's engine. The fuel filter helps bring clean air into the engine. It traps airborne pollutants and contaminants to keep them from harming the engine. Over time, a dirty fuel filter lets the contaminants into the engine's mechanical system, which eventually significantly impacts the car's performance.

Dirty Air Filter

The air filter plays a similar role in ensuring that the engine has enough clean and purified air to run correctly. The air filter traps harmful debris and possible contaminants to prevent dirty air from reaching the engine. The air filter may need to be cleaned if the car's engine starts to suffer.

To schedule an appointment for service, contact our dealership today.


FIAT of Scottsdale

16301 N. 78th Street
Directions Scottsdale, AZ 85260

  • Studio: 855-874-5199

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