So I just bought a 2009 Audi A4 Quattro, and all we did w...

Q: So I just bought a 2009 Audi A4 Quattro, and all we did was change the oil, and the car started shaking. What could be the problem

asked by on October 08, 2017

So we recently bought an Audi A4, and it needed a oil change. We changed the oil and the car started shaking, sometimes it runs good but other times it seems to lose power a bit. What could be the problem?

My car has 82700 miles.
My car has an automatic transmission.

Rough operation and loss of power on acceleration can be due to plugged fuel injectors, faulty oxygen sensors, fuel pump and/or filter, vacuum leaks, ignition system malfunctions, bad valve timing if the timing belt or chain is worn or skipped, blocked exhaust (e.g., catalytic converter fails or become clogged), a faulty airflow sensor or throttle position sensor, and so forth. To pinpoint the exact case will require an engine loss of power diagnostic. If you request that diagnostic, the certified mechanic will get this resolved for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

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

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

Weird Noise from Transmission

You did not mention if you have a manual or automatic transmission. The shift lock will make a click when pressing on brake and may be louder than normal and need to be replaced.

Rattling Noise coming from the Fan behind the radiator

The cooling fan clutch failure is a common problem with the B5 chassis A4 and VW Passat. When replacing the fan clutch, inspect the fan blade for any cracks as well. If any area of the blade looks suspect, replace...

car wont start and knocking noise

When you turn the engine over with the starter motor, if there is an unusual and marked noise, such as knocking, that did not exist before, that most likely signifies that something has broken. Is the car, by chance, out...

Related articles

Top 10 PZEV Cars for Eco-Friendly Drivers
Teddy Leung / Shutterstock.com The whole idea of a PZEV (that is, a partial zero-emissions vehicle), seems paradoxical. You’d think it’d have to either be zero-emissions or not in the category at all. But as contradictory as...
Understanding the Audi Service Due and Indicator Lights
Car symbols, or dashboard lights, are a car service reminder. The Audi Service Due light indicates when your car needs service.
The Best Used Cars to Buy If You're a Pizza Delivery Guy or Gal
If If you deliver pizzas, you want to be sure that your car is reliable and won’t break down. After all, you have hungry customers waiting, and you don’t want the pizza to get cold. You want low gas mileage,...