Gutless 400 diesel doing crappy MPG

Podman · Post by **Podman** » Wed May 10, 2006 10:17 pm

I bought my mum a P reg 420d last year and I only just got informed that it does really crappy MPG. When I last drove it I thought it was a bit gutless so I decided to change diesel filter, air filter oil filter etc. Didn't seem to make any real difference to it. The bit that bothers me the most is nothat not only is it gitless but it does crappy mpg. Are there any common faults with the dervs that I could look for ?

Ti Rich · Post by **Ti Rich** » Wed May 10, 2006 10:34 pm

Take a trip over to Rover Ron's website for Rover diesel heaven!!!

http://45zs.info/

Lot's of fault finding stuff too!

C2K · Post by **C2K** » Wed May 10, 2006 10:42 pm

MAF sensor would be my first guess.

Podman · Post by **Podman** » Thu May 11, 2006 12:52 am

do they haev one on the d ??? it's teh mechanical non intercooled version I think