I just bought a 2007 Malibu LS 2.2L 4cylinders, with odometer 130K, and have replaced the air…

zhgx

I just bought a 2007 Malibu LS 2.2L 4cylinders, with odometer 130K, and have replaced the air filter, engine oil, oil filter, spark plugs, according to the records of maintenance left in the car. Just a few days ago, I got the second chance to refill the tank up fully and calculated the MPG of last half month, and the result shocked me with the little number less than 17. What's the wrong with this? This car runs smoothly but accelerates not fast enought.

Comments (3)

No. 1-3

ScottyKilmer

Editor

Aug 21, 2017

sometimes they go bad, BUT it's best to have a pro test them with his scanner data rather than guess with such an expensive part.

zhgx

Aug 21, 2017

It sounds good. Do I need to change the air fuel ratio sensor?

Anthony Zingale

Aug 21, 2017

Either a dirty Mass Air Flow (MAF) sensor or a dirty throttle can cause that. If that's the case, do this video. https://www.youtube.com/watch?v=NWCKvU2FmDc