I have noticed that our Mondeo 130bhp seems to have poor MPG lately

Anyone know why? what it could be causing this?


Cheers Brian

 

Recently serviced?
Tyre pressures, this affects mine wildly!

 

anysmoke on start up, when you boot it?

 

Was serviced a few months ago, i havent checked the tyre pressures for a while actually i will do this, i did notice a bit off difference when i fitted 18's but its now getting worse it does smoke a bit when you boot it, but dont all Diesels


Brian

 

local runs ??

 

might be sticking EGR valve?

 

what about loading it up with some fat mates and go for a trip up the motorway

 

Will remove the EGR valve and give it a clean


Brian

 

if you can you might want to remove the plastic inlet and do that at the same time, even if theyre not your problem, by cleaning both you will improve the mpg anyway.

 

Whats the best stuff to clean them with???

 

What kind of MPG are you getting, compared to what you were getting?

 

Been told to use brake/carb cleaner

I was getting around 48mpg around town, but its now down to 35mpg


Brian

 

try changing your fuel filter too

 

The new figure seems more in line with my experience of the 130 brake Mondeo, ran 1 for 3yrs (135k miles) never saw more than 42mpg and it was constant motorway work not knocking about town.

 

At 70-80 on the motorway and being light on the throttle I have seen 48-50mpg consistently for the last 2 1/2 years

If you turd along at 90+ then yeah it goes down to about 43

 

Well i have just removed the EGR valve and gave it a good clean there was some build up of shit but not much, was gonna remove the inlet but i need the car tomorrow and got work tonight so will remove that and clean it in the next few days, going to replace the air and fuel filters to this week see if it helps


Brian

 

Where is that.....i havent open the bonnet yet but is it easy to get to and clean

 

Boost pipe? Had one go on mine, 2.2 diesel, mpg dropped down to 32, since its been sorted get about 38 round town and anything upto 55 on a run.

 

yes mate piece of pee

this is what it looks like and where:
http://images.google.co.uk/imgres?im...a%3DN%26um%3D1

 

Have a look here mate a guide on how to remove it, its very easy 2 bolts,2 nuts and a jubilee clip

http://fordwiki.co.uk/index.php/EGR_..._Clearout_TDCi



Brian

 

Update

I used the car last night for work i done 150miles and its now doing 53mpg thats sat at 70mph on the motorway and it droped down to 51mpg when i was going through town


Brian

 

Cheers boys...will do mine over the weekend

 

No worries mate


Brian

 

Hi mate i have a focus tdci 115 that is displayin similar symptoms. Was gettin 48 to 52 mpg then all of a sudden its dropped to between 37 and 43 no matter how i drive. What was it you did exactly? I know your engine will be slightly different to mine but any help would be greatly appreciated as i do nearly 3000 miles a month and its started costing me a fortune. Many thanks. Al

 

Also not knowing if this is related, my air con stopped working at all recently and i developed a horrible squeak on start up and shut off at the same time, which im thinking could be the pump seized or the belt loose but im not having any charging problems but do have a squeaky belt when its damp. Could this be causing extra drag on the engine and cause my mpg problem? Just ordered a haynes manual for the focus from thebookdepository.com last week but with the xmas post dont expect to get it before xmas. Again any help appreciated.

 

http://fordwiki.co.uk/index.php/EGR_..._Clearout_TDCi

 

excellent.

will give this a go on her Jag x-type, same engine and were getting low mpg from it.

looks easy enough to do aswell.

 

check the bottom pulley

steve

 

cleaned mine out on the Mondeo yesterday....reset the MPG to see how we get on......will let you know later.

Peice of piss to do, took about 15 minutes.....

 

just been on a 20mile run up the bypass to Coventry and it is showing 35mpg and rising fast.......

 

Nice one mate

Have done a few short trips in ours last few days poping to the shops etc and the lowest its dropped to is 45.8mpg


Brian

 

is that just town driving or motorway that you see 45mpg

 

Town driving mate on the motorway last week i got it upto 53mpg


Brian

 

did mine earlier on and the carbon that cae out of the egr valve!!

i HAD to do the inlet aswell as there was a very big build up in there to!
when it was off, the amount that was on the inside of the head,must of been 1mm think in carbon and the crap that come out of the inlet, i could not believe it,all that from a 50k milage car!

have taken it for a small run today but could see it slowly building up the mpg,have to do a few more miles first i think so it can start correcting its self.

thanks for the info on this lads.

 

You should be seeing 600 to a tank , change air and fuel filter and get the injectors checked to see if there all still in synk with each other , they might just want re-calibrating.

 

If you have put on 18" wheels you have to update the ecu that it know's that you have 18" now. Your ford dealer can do this.

 

Really never hear of that i fitted 18"s to mine about 6 months ago


Brian

 

No worries mate

I never removed my inlet manifold as run out of time, how did you get the plug disconnected the (grey white colour one in the middle)? only i couldnt get mine unpluged and didnt wonan break it


Brian

 

your sure?

the old mondeo uses pretty basic electronics and i was told it wasn't possible to change wheel size details?

re mpg, keep an eye on the temp gauge. when upto temp it should sit dead central and hardly ever move. theres a valve on the back of the waterpump which plays up, it's only about £10 and this creates too much flow around the systems when it breaks so the engine never gets upto temp!

 

Normaly it's possible i've did this on a few mondeo's and focus. It makes a diffrence in the speedo.