OP
OP
ok, just worked out mpg accuratley using brimming as indicated by tris, and my mpg is 22.7! so there is something wrong, my dad's 2 litre 14 yr old toyota gets more than this.
suggestions?
suggestions?
Technical bad fuel economy punto
- Thread starter mzhussein
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Technical bad fuel economy punto
holy crap thats bad, i drive my 1.4 Fez hard and i still get 35mpg at least.
surely it cant be that low
OP
OP
191 miles, from 34 litres.....it is
suggestions??
suggestions??
25.5 mpg then?
I can certify that the punto 60 S Team (99) is definitely a 47 litre system, and that economy is down nearly half!
I suggest you start looking at the MAF sensor and ensuring all the pipes are sealed and all exist. Afraid my car is now at the garage for it's MOT so a real in depth look is impossible till Thursday at best! (It's there due to my uni timetable, so he has to have it for a day or 2 so I can pick it up again).
The only cold start valve I can see is in the airbox, and I don't have a pipe to direct heat off the manifold anyway
I suggest you start looking at the MAF sensor and ensuring all the pipes are sealed and all exist. Afraid my car is now at the garage for it's MOT so a real in depth look is impossible till Thursday at best! (It's there due to my uni timetable, so he has to have it for a day or 2 so I can pick it up again).
The only cold start valve I can see is in the airbox, and I don't have a pipe to direct heat off the manifold anyway
OP
OP
what is MAF sensor??? thanks
MAF stands for Mass AirFlow, it has a pipe coming off the back section of the airboxes and that pipe runs down the back of the engine, mine had a small split in it and when I changed the pipe for a new one the MPG rose some (was a hairline crack). The pipe has a stupid FIAT-jubilee clip on like the radiator hose at the bottom but nothing at the top and comes off the joint to the left where the thin pipe runs down on the left side of the air box assembly there.
Hopefully you understood that (and I remembered the pipes correct use!), if not I'l see if I have a picture, but I don't recall taking one!
OP
OP
ahhh i understand, but thoroughly confused as to where to find the pipe.....pictures would be ace! but if not ill post random pictures of that area, and if u see it yout can tell me..
https://www.fiatforum.com/attachment.php?attachmentid=48775&d=1219088293
https://www.fiatforum.com/attachment.php?attachmentid=48776&d=1219088293
That's the pipe with the split after it was exaggerated removing the pipe.
https://www.fiatforum.com/attachment.php?attachmentid=48776&d=1219088293
That's the pipe with the split after it was exaggerated removing the pipe.
OP
OP
i seeeee, i always wondered what that was, will check it tomrorow! btw what would happen if this was left disconnected at the air box?
try the water temp sensor if its broke it makes the over fuel had the same problem with my delta hf .
they are only about 10-12 quid the last time i bort one
luke
OP
OP
weres the water temp sensor? wouldnt i notice the temp gague bein funny tho?
If it is disconnected it would cause miss-fueling, arent sure about the temp sensor but there may be a couple; never had to fiddle with mine.
OP
OP
ima go have a peek at the MAF now, enjoy the snow where i am aswell....will take a pic aswell.
....will take a pic aswell.
it is usally in the area of the thermostate it should be a blue sensor... it has nothing to do with the gauge it tells the ecu when the engine is warm so it can adjust feuling for warm running if it is not reading currectly it thinks its on cold start and will use more fuel...
OP
OP
Ok, have gone had a look at MAF pipe, took pictures cos i cant see anything, any feedback, greatly appriciated.
Top
Bottom
Top
Bottom
OP
OP
will have a poke with reguards to this wen its a bit warmer, postively freeeezin atm
thanks
no obvious damage there then, though you appear to have a rubber pipe where i have a solid plastic one (top section, largest jubilee clip)
(top section, largest jubilee clip)
OP
OP
yeh, i guessed this wasnt meant to be lol, i saw it and it looks like a "pikey fix" might see if i can get a new one....but htis is just a breather hose innit?? not REALY important...ok so its not MAF, what next??? thanks
yeh, i guessed this wasnt meant to be lol, i saw it and it looks like a "pikey fix" might see if i can get a new one....but htis is just a breather hose innit?? not REALY important...ok so its not MAF, what next??? thanks
I'd be tempted to try some gas leak detector on such joints as that jubilee clip, but i arent sure it's suitable
Are you sure all the cylinders are firing? Sure we covered that earlier...
See if you can spot any damage to the plastic like cracks etc and when you get chance try a dual carriage way run as it may simply be all the stop/starting
