Does it start well / go well ?
does it smoke at all ?
brakes binding ?
tyre pressures ?
air filter condition ?
maf connected ?

 

Does it start well / go well ? Yep
does it smoke at all ? Nope
brakes binding ? Nope
tyre pressures ? Fine
air filter condition ?
maf connected ?

All fine until the last 2 as I've not checked. I assume MAF will be connected. I see MAF is quite a popular topic - may as well start reading up on it and the differences it makes!

 

Fuel return pipes a common thing to split. Check they are not leaking away your diesel!
If thats fine then maybe a poor MAF sensor?

 

when i first got my zr td it was doing only 35 mpg but that was down to many things that where, it was badely servised, cam belt was just about to break thank god i changed it the second i got the car home, the maf was compleatly gone a £30 off ebay sorted that and i had a split intercooler pipe and the waist gate valve was stuck on the turbo. btw this is why you never ever buy a car off ebay even if its cheep i got mine for 1300 top spec modle air con sunroof the lot but have spent at least 800 getting it running right. my advise would be take it off the road for a couple of days and put new maf in it, and a compeat servise it makes alot more diffrence then you would think.

 

i get 170 miles for £25 thats about 42-43 mpg,i do quite a few short journeys,starting to wish i had kept my corsa sxi dti 1.7 average was 57 mpg,for

 

same car i get 42-43 170 miles for £25,used to get 57 mpg in my corsa sxi dti 1.7,i do quite ba few short journeys and hardly any over 15 miles

 

What sort of journeys do you do mate?

 

Mainly town and some motorway driving. I put £60 in a couple weeks ago and it looks like I'm going to get less than 400miles again... I'll look into a new MAF then.

If I disconnect it, what will that prove? [No sarcasm please! ]

 

I'd say 40mpg isn't abnormal for mostly town/short journeys.

 

Yep, I would agree if you doing a lot of traffic, stop start malarky,

 

any how are you working out mpg?

City driving where the engine doesn't warm up will kill mpg.

 

Brim to brim. The most accurate method I can think of.



As I said before, I think I'm just more peeved by the fact my old Clio can do similar - if not better - MPG. Puts me off modifying the car as it will only get worse!

 

I find this with my petrol 1.1. I work til early in the morning sometimes, and drive back via empty country B roads at speeds 40-60 mph. When my engine is running 5th gear, 2k revs, at 1c outside air rushing in at 50mph it rarely gets fully warmed up properly on my 7 miles journey. I leave it to idle when I get home for 5 mins while I wait in car to ensure it is warm.

Colder engines naturally use more fuel due to the auto choke.

 

i now get bout 40 to 45 in town but on the open roads cruising at 70 (ISH) get about 55 mpg there not good for fuel round town.

 

My 45 hasn't been getting decent MPG since I bought it.
It's been averaging around 40mpg, sometimes less (as low as 35mpg) and I wasn't sure why. It was worse than that when I first bought it.

Few things that were at fault with mine:

- The intercooler hose was split. Replaced that.. significant improvement to both power and MPG.
- The MAF was dead.. replaced with a £35 cheapo one and saw minor improvement to MPG but major improvement to performance. However, the MAF has died again already as the cheapo one was rubbish so I'm going to replace with a decent one and apparently I should see better MPG with a decent quality working MAF.
- Major thing.. my clutch was slipping for around 3 months and I hadn't noticed until it became bad in low gears. I hadn't had the car long so didn't know any different and the slipping was gradual so the car seemed lacklustre when accelerating through the high ranges. I thought this was just how the car was. However, the clutch finally packed in completely last week and I've just got the car back with a brand new clutch fitted. The car drives like a different car.. so much smoother and more powerful and revs are much lower. I expect this to make quite a difference to my MPG so I'm looking forward to my new proper MAF arriving and getting the car running how it should be.
- I do 50% town driving and 50% dual carriageway driving so my MPG is expected to be lower because of all the stop starting I do on a morning.

Bear in mind I've had this car 6 months and it's never been right but all the issues were so gradual I was blissfully unaware. Once I've got my new MAF on I expect the combination of new clutch and MAF will transform the car and hopefully I'll see my MPG return to somewhere in the mid forties.
It's also having new belts next week.

 

How are you getting on now? Any improvement?

Filled up again yesterday - 38MPG. Horrible for a diesel. Whilst changing the clutch cable I discovered the airbox cover doesnt sit perfectly flush with the MAF and I imagine air escapes where they connect, could that play havoc with my MPG?

I'm going to try and source a replacement from a car breaker, the petrol 25/zr will have the same airbox cover wont they?

 

I discovered the airbox cover doesnt sit perfectly flush with the MAF and I imagine air escapes where they connect, could that play havoc with my MPG?

Probably, as the maf can't measure all the air gong into the intake.

I'm going to try and source a replacement from a car breaker, the petrol 25/zr will have the same airbox cover wont they?

Don't think they are the same. iirc, the filters are slightly different between petrol and diesel, so the airbox will be different too.

 

Probably, as the maf can't measure all the air gong into the intake.



Don't think they are the same. iirc, the filters are slightly different between petrol and diesel, so the airbox will be different too.

Gutted. I must have been in contact with 15 - 20+ breakers within a 20mile radius looking for SDI injectors with no joy. Most places either had petrols or nothing. The only diesel I encountered was a 45. Granted I can't take the injectors from that, but does the 45 diesel have the same airbox?

Thank you for your help

 

i think as long as its a l sereis diesel i think the air box is te same petrol will not fit as there is not the fitting for the maf it might be looking at freelander as well but not sure if they are the same.