CarlT67 Posted April 12, 2007 Share Posted April 12, 2007 I have owned my supra now for about a month, so I have therefore been driving with a little heavier foot than normal. Taking this into consideration on the last two Tanks full, I have been averaging 13.5 and 13.8mpg. I’m not too worried about putting fuel into a car (hence buying a supra and not a Yaris) but thought this was extremely low for a N/A. Bearing in mind my friend who also drives an N/A gets far better mpg and doesn't exactly drive economically..! I have done some searching and found that old/dirty O2 sensors can be the issue but I was wanting to verify (cleaning or replacement), and that most N/As average at 18-20mpg. Additionally the car was in storage with some work being done on it for about a month before i bought it and its first run was the test drive. The car shows no evidence of power loss or running bad. Work that was done included removal and reinstallation of the induction, throttle body, HT leads, Rocker covers all for cleaning... So could this also have anything to do with the fuel consumption or cause the car an issue...? Thanks Carl Quote Link to comment Share on other sites More sharing options...
CarlT67 Posted April 12, 2007 Author Share Posted April 12, 2007 Additionally I visited Toyota and they want something like £290 for the pair...! So is there someone who can supply them cheaper? Thanks again Carl Quote Link to comment Share on other sites More sharing options...
edge Posted April 12, 2007 Share Posted April 12, 2007 Nic gets them. There is a group buy if you do a search. Think they are about £75 Quote Link to comment Share on other sites More sharing options...
Bob Posted April 12, 2007 Share Posted April 12, 2007 Give Nic (import pimp) a shout. ARe you running a standard fuel pressure regulator? Quote Link to comment Share on other sites More sharing options...
patrikbrunt Posted April 12, 2007 Share Posted April 12, 2007 ive had my supe a fortnight now and am also shocked at the poor economy... got 240km to the last tank... someone also said to me to try the o2 sensors. Quote Link to comment Share on other sites More sharing options...
dr_blackman Posted April 12, 2007 Share Posted April 12, 2007 I just worked my mpg out for the last 2 fill ups and it works out 23.6 and 24.9 which aint bad concidering there was quite a few blasts over the bank holiday period Much better since her service Quote Link to comment Share on other sites More sharing options...
dr_blackman Posted April 12, 2007 Share Posted April 12, 2007 Last tank lasted 311 miles Quote Link to comment Share on other sites More sharing options...
juanchan Posted April 12, 2007 Share Posted April 12, 2007 ive had my supe a fortnight now and am also shocked at the poor economy... got 240km to the last tank... someone also said to me to try the o2 sensors. 240km? If that was miles, it would seem about right for a tankful to me. I've had just over 300 miles from a tank with mostly motorway miles, but about 230 miles as a lowest so far in my 4 months of ownership. Quote Link to comment Share on other sites More sharing options...
Kranz Posted April 12, 2007 Share Posted April 12, 2007 ive had my supe a fortnight now and am also shocked at the poor economy... got 240km to the last tank... someone also said to me to try the o2 sensors. EEk I get 320 miles, and though tthat was poor I just bought a CW replacement O2 sensor but haven't fitted it yet, as the wideband may take its place Quote Link to comment Share on other sites More sharing options...
CarlT67 Posted April 12, 2007 Author Share Posted April 12, 2007 Thanks guys i will give him a shout...! Has anyone had this problem and fixed it with O2 sensors...? Quote Link to comment Share on other sites More sharing options...
ChrisSZ Posted April 12, 2007 Share Posted April 12, 2007 Stick them in lemon juice overnight - cleans them up like new and much cheaper than a new set (only really a temporary measure but....) Quote Link to comment Share on other sites More sharing options...
CarlT67 Posted April 12, 2007 Author Share Posted April 12, 2007 Give Nic (import pimp) a shout. ARe you running a standard fuel pressure regulator? Yes pretty sure i am, only engine mods done to my knowledge are apexi induction, and exhaust. Anyway of finding out? My last tank 315KM Before about 290KM Quote Link to comment Share on other sites More sharing options...
Kranz Posted April 12, 2007 Share Posted April 12, 2007 Stick them in lemon juice overnight - cleans them up like new and much cheaper than a new set (only really a temporary measure but....) I did this before the MOT. Previous year's readings for emissions were poor (high HC and a bit of CO) even though I had cats in. After leaving them dipped in Jif lemon juice overnight the MOT result was almost zero HC and CO. Give it a go! Quote Link to comment Share on other sites More sharing options...
CarlT67 Posted April 12, 2007 Author Share Posted April 12, 2007 I did this before the MOT. Previous year's readings for emissions were poor (high HC and a bit of CO) even though I had cats in. After leaving them dipped in Jif lemon juice overnight the MOT result was almost zero HC and CO. Give it a go! Will do defiantly, I will have to wait until tomorrow night to drown them, this would be a good temporary measure until I can source some new ones. Quote Link to comment Share on other sites More sharing options...
Havard Posted April 12, 2007 Share Posted April 12, 2007 Where would you find the O2 sensor? I got about 250 Miles from my last tank but it did last about 5 weeks and in the time I was on the road I was either pottering around town or going silly with the loud pedal. H. Quote Link to comment Share on other sites More sharing options...
ChrisSZ Posted April 12, 2007 Share Posted April 12, 2007 In the exhaust pipe - either end of the cat Quote Link to comment Share on other sites More sharing options...
Kranz Posted April 12, 2007 Share Posted April 12, 2007 Where would you find the O2 sensor? After the O1 and before the O3 sensors Edit: I'll get my own coat thanks Quote Link to comment Share on other sites More sharing options...
CarlT67 Posted April 12, 2007 Author Share Posted April 12, 2007 In the exhaust pipe - either end of the cat In the N/A I always thought the O2 sensors were both on the manifold viewable from the top, and the one after the cat was a Cat temp sensor..? Quote Link to comment Share on other sites More sharing options...
Nic Posted April 12, 2007 Share Posted April 12, 2007 The 2 oxygen sensors are mounted in each of the 2 manifolds, you can see the holes for them on this pic. http://img263.imageshack.us/img263/5214/11outen0.jpg Location on a tubular manifold ( ) http://img143.imageshack.us/img143/7632/dsc00305dl3.jpg http://img98.imageshack.us/img98/8473/p1030161sa4.jpg Quote Link to comment Share on other sites More sharing options...
Nic Posted April 12, 2007 Share Posted April 12, 2007 Fitting new O2 sensors may seem expensive (especially on an NA which needs 2), but they will pay for themselves in fuel savings very quickly. They will also make your car feel smoother and should give you a bit of extra power, as you won't be running so rich. Quote Link to comment Share on other sites More sharing options...
RobSheffield Posted April 12, 2007 Share Posted April 12, 2007 Wow, that tubular manifold looks lovely, if i was an NA owner looking for a lovely manifold like that, should i just PM you for prices? Quote Link to comment Share on other sites More sharing options...
Nic Posted April 12, 2007 Share Posted April 12, 2007 Wow, that tubular manifold looks lovely, if i was an NA owner looking for a lovely manifold like that, should i just PM you for prices? Funny you should ask that Sir, I'm organising a group buy of them this very moment. You could pm me yes, or alternatively you could could click this link. http://mkivsupra.net/vbb/showthread.php?t=104891 quick hide Rob before we get into trouble :hide: Quote Link to comment Share on other sites More sharing options...
Guest FKARichie-Supra-R Posted April 13, 2007 Share Posted April 13, 2007 ouch that mpg is low... Quote Link to comment Share on other sites More sharing options...
Thorin Posted April 13, 2007 Share Posted April 13, 2007 Wow, that tubular manifold looks lovely, if i was an NA owner looking for a lovely manifold like that, should i just PM you for prices? Funny you should ask that Sir, I'm organising a group buy of them this very moment. You could pm me yes, or alternatively you could could click this link. http://mkivsupra.net/vbb/showthread.php?t=104891 quick hide Rob before we get into trouble :hide: Quote Link to comment Share on other sites More sharing options...
ChrisSZ Posted April 13, 2007 Share Posted April 13, 2007 Wow, that tubular manifold looks lovely, if i was an NA owner looking for a lovely manifold like that, should i just PM you for prices? :rlol: Blatant:Pling: Quote Link to comment Share on other sites More sharing options...
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