mpg Help

matt_vdub · Post by **matt_vdub** » Fri May 16, 2008 6:28 pm

my 1997 1.6 polo only does about 100 miles to 20 ltrs which is like 25 mpg which is urban dring but it idles fine and my temprature gauge works fine ie it stays at 90 C when warm never droppes or rises has passed mot tody fine on emitons is this normal ???? i thought about changing the temp sensor but it does eveything fine ie tickover and the gauge doesnt play up it has new plugs / airfilter

NOZ · Post by **NOZ** » Fri May 16, 2008 11:24 pm

my 16v does atleast 240-50miles on a full tank ie 40-45 litres so it may be slightly under what you should expect although i'm not sure what the 1.6's are like for juice. you could also check the lamba sensor which can also make a difference.

LeMeph · Post by **LeMeph** » Fri May 16, 2008 11:28 pm

crack in the exhaust manifold is a possibilty. My 1.4 dropped to around that much when i had a dirty, untreated, two inch fracture in it lol. So could be that.

Ive also found that resetting the ecu can sometimes lead you back to a decent mpg. Just take the battery off for half hour then plug it back in again. Though really you shouldnt have to do this very often if at all. Give it a try though it cant do no harm!

matt_vdub · Post by **matt_vdub** » Sat May 17, 2008 12:09 am

i'll try that the first joint in the exhaust the one directly joing to the manifold the bolts were loose and blowing ive tightend them up so will it have reset the mixture i'll try the battery thing tho

DRUE1 · Post by **DRUE1** » Sat May 17, 2008 5:50 pm

ive got a 1.4cl and i put Â£25 in and get over 200 miles so thats not bad at all

matt_vdub · Post by **matt_vdub** » Fri May 23, 2008 12:00 am

when the temp sensor is going people say about idleing problems my car has started idleing at 1500 evey now an then but if you restart the engine its fine ????

NOZ · Post by **NOZ** » Fri May 23, 2008 12:28 pm

Normal idle is at 1000rpm. If your car starts cold then it will idle slightly higher to begin with, which isn't a fault. My 16v idles around 900rpm when upto temp which i've been told is normal for the model.

How on earth you manage 200miles from Â£25

Surely it included motorway miles or something? I never managed that in my old 1.4CL nor my current 16v. I get 240-50 average from a full tank on town driving.