09-01-2014, 09:37 PM
(09-01-2014, 09:14 PM)C.A.R. Wrote: When my MAF was left unplugged my MPG dropped to the low 40s. Not quite as low as you're experiencing but it could be a problem?
This, combined with lower ambient temperatures (diesels can lose 10-15% efficiency in the cold winter months in my experienced) might help towards resolving your problem?
The maf was replaced with a genuine one about 2 years ago and gets cleaned every service. I did check the electric connection just incase