5.7 mpg loaded or empty

I cannot help your situation, only to add it is very bad to blow out air filter. replace with new when needed. blowing out especially with high pressure will only loosen up all the dust & particles & you will not get all of the dirt out, but your engine will suck it in. would like to see a oil analyst after 20,000 miles with a filter blown out.

 

Perhaps the software update is not helping?

 

Please post if you find out. Stoops Freightliner told me the same thing about the crap milage. I used to get over 7. Had an in-frame done last spring hasn't helped

 

I have a 2012 with d13 Eaton Trans getting 5.4 consistently. Taken to dealer 6 times and say nothings wrong or can't figure it out. I got pissed last time because they charged me and said problem solved. I called and said I didn't like being charged for services not performed like they said and that a $$hole had the nerve to call me a liar. So I called Volvo North American. Yeah that volvo dealer is not gonna be looking to good pretty soon. They said that they need to file an e-service ticket if they can figure it our and the engineers from volvo will either figure it out over the phone or come out and figure it out. But in the meantime any solutions to this terrible fuel mileage I would appreciate it. Also cleaned all fuel components and replaced all fuel lines and connectors! Thank you

 

I'm attaching a link to another thread. I haven't had time to read it thoroughly, but at a glance it looks like the same problem with a solution

 

Having a problem with copying. It's the same forum try searching "battle for fuel milage, 2007 century". It's from May 2013.

 

Sounds like they updated your software with a more Al Gore-ECO friendly version.......now you're paying the fuel mileage penalty.

 

Guys I am about to cut this truck up into pieces and send it back to volvo. My milage plummeted from yesterday to today.