Q: Q: Slow acceleration

asked by on

All of a sudden car lost power would accelerate very slowly even when the peddal was pushed down all the way. I just changed the throttle body and mass airflow sensor I also changed a spark plug Coil.I don't know why its doing this

My car has 187000 miles.
My car has an automatic transmission.

Thanks for writing in about the acceleration issue with your 2007 Volvo S60. At first glance, I’d agree with you that the problem would be caused by the MAF sensor, as that’s what commonly causes the slow acceleration issues and can be a typical problem with many Volvos. However, it could be a problem with the throttle module located right under the intake manifold.

Restriction in air or fuel flow might also be causing this problem to occur. Changing the fuel and air filters might seem to be a simple solution, but in many cases this solves the problem. Keep in mind, I believe that the throttle modules on Volvo’s are warrantied for for 10 years or 200,000 miles - putting you barely under the warranty claim level. I’d call the dealership about the throttle module issue and see if your car is still covered. If not, contact a certified mechanic, such as one from YourMechanic, who can test drive and diagnose the acceleration issue in order to move forward with correct repairs.

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. Q: Slow acceleration

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: In traffic when accelerating, engine hits over-rev protection

Hello there, thank you for asking about your 1989 Dodge Ramcharger. Check the transmission fluid to be sure the transmission is not being starved of fluid while operating. Otherwise it sounds like there is trouble in the transmission valve body...

Q: Q: 2006 Volvo s60 2.5T and when accelerating it vibrates violently

Hi Christian. Thanks for the additional information. Based on what you've indicated, I would suspect that you have worn out wheel bearings causing the vibration, especially if you are experiencing the vibration reduces and when you make a turn. However,...

Q: Q: Car won't start

Hi Denise. Thanks for contacting us today. Typically, when you turn the key and get the clicking sound, it's due to one of three possible issues. Either the battery does not have enough cranking amps or cables are loose, an...

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...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.