Well, I would clean the MAF sensor next. Sometimes mpg lose is combo of small issues that build until the overall effect is noticed.Originally Posted by yeacashgpgt2002
Other items (that are easy to check)
1) PCV valve – just replace it they only cost $2
2) Proper tire inflation. 30 psi is the very least you want on a cold (not driven for an hour) tire, this would be the factory recommendation. I aim for 33 psi on a warm (recently driven) tire in the winter and 36 psi in the summer.
3) EGR – despite people hate of this emission control device, it actually improves mpg. I’d start by cleaning the carbon out of it.
