THE ANIMAL Posted May 10, 2011 Share Posted May 10, 2011 hi everyone, got n/a sup jap auto, what is the normal fuel consumption ? mine is doing 18 to the gallon, put £30.00 (22litres) gets me 89 mile thats it, im keeping to the speed limits im not booting it, ive cleaned 02 sensors with the lemon juice, ive got a set of ngk iridiums grade 6 on the way to put in, car as only done 5000 in the last 6 years and plugs haven't been changed so im hoping that might make a difference, anyone got any other ideas or real figures for fuel consumption, thanks. p.s car as only done 83,000 miles cheers. Quote Link to comment Share on other sites More sharing options...
johnny g Posted May 10, 2011 Share Posted May 10, 2011 Your O2 sensors might still be buggered... Get it to a dyno and have the AFR's checked. Are your leads OK? Quote Link to comment Share on other sites More sharing options...
Rob_Mitchell Posted May 10, 2011 Share Posted May 10, 2011 i never thought about changing my o2 sensors lol my fuel bill is bad but i thought it was the norm, plus i dont poodle about Quote Link to comment Share on other sites More sharing options...
adam1983 Posted May 10, 2011 Share Posted May 10, 2011 I would have thought its all dependant on what your using it for. Is it around town or on the motorway? I thought read somewhere that normal mpg was around 19-20 Quote Link to comment Share on other sites More sharing options...
THE ANIMAL Posted May 10, 2011 Author Share Posted May 10, 2011 leads look ok there is no misfire or idling issues car still pulls ok and starts first time Quote Link to comment Share on other sites More sharing options...
THE ANIMAL Posted May 10, 2011 Author Share Posted May 10, 2011 I would have thought its all dependant on what your using it for. Is it around town or on the motorway? I thought read somewhere that normal mpg was around 19-20 both round town and motorway !!! Quote Link to comment Share on other sites More sharing options...
Rob_Mitchell Posted May 10, 2011 Share Posted May 10, 2011 not the best for around the town, so thats prob the answer there Quote Link to comment Share on other sites More sharing options...
RobD Posted May 10, 2011 Share Posted May 10, 2011 Probably the 3 litre engine mate it all depends on how you drive, o2 sensors could be the problem, try resetting the ecu also! Quote Link to comment Share on other sites More sharing options...
THE ANIMAL Posted May 10, 2011 Author Share Posted May 10, 2011 Probably the 3 litre engine mate it all depends on how you drive, o2 sensors could be the problem, try resetting the ecu also! ok, think i get it put on the dyno see whats happening. Quote Link to comment Share on other sites More sharing options...
stevie_b Posted May 10, 2011 Share Posted May 10, 2011 (edited) Other people have had only limited success (if any) with the lemon juice trick IIRC. Your car should achieve low to mid 20s mpg, nudging into the upper 20s if driven gently and adding sedate motorway driving into the mix. It sounds like you need to bite the bullet and buy those O2 sensors. ok, think i get it put on the dyno see whats happening. You don't need a dyno. The ECU has a certain amount of self-learning built into it, to manage the fuelling. If it's learned to overfuel due to knackered O2 sensors, it'll still probably be overfuelling. Disconnecting the battery for a few minutes is all you need to do to get it to re-learn. If that doesn't help, it's time to push your credit card over the counter at Mr T's in exchange for two O2 sensors. Edited May 10, 2011 by stevie_b (see edit history) Quote Link to comment Share on other sites More sharing options...
THE ANIMAL Posted May 10, 2011 Author Share Posted May 10, 2011 Other people have had only limited success (if any) with the lemon juice trick IIRC. Your car should achieve low to mid 20s mpg, nudging into the upper 20s if driven gently and adding sedate motorway driving into the mix. It sounds like you need to bite the bullet and buy those O2 sensors. yeah think its looking that way, might just put it on the dyno first see whats happening, but thanks for the advice. Quote Link to comment Share on other sites More sharing options...
stevie_b Posted May 10, 2011 Share Posted May 10, 2011 You beat me to my edit. See my post above. Quote Link to comment Share on other sites More sharing options...
THE ANIMAL Posted May 10, 2011 Author Share Posted May 10, 2011 You beat me to my edit. See my post above. ok stevie_b i will try that later, thankyou for your advice & help !! Quote Link to comment Share on other sites More sharing options...
THE ANIMAL Posted May 15, 2011 Author Share Posted May 15, 2011 Probably the 3 litre engine mate it all depends on how you drive, o2 sensors could be the problem, try resetting the ecu also! how do i reset the ecu ?? Quote Link to comment Share on other sites More sharing options...
adam1983 Posted May 15, 2011 Share Posted May 15, 2011 Disconnect the battery for a few minutes then reconnect. Simples Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted May 15, 2011 Share Posted May 15, 2011 A few minutes with a scope on the diagnostic socket will show if the O2 sensor(s) needs changing. Lemon juice is for the table in the restaurant, not fudging oxygen sensors that you think may be dead (they usually aren't, anyway). Quote Link to comment Share on other sites More sharing options...
Havard Posted May 15, 2011 Share Posted May 15, 2011 The auto around town will be a killer. I have just done the Dragonball and got 25 to the gallon with long periods of gentle driving on the motorway. OK there was a bit of hooning but I reckon I would have got about 27 at best. My last £35 I put in before the Dragonball got me just 90 miles as I never saw a motorway in that time. I reckon that is about 15 Mpg..!! May be worth getting the 02 sensors checked. H. Quote Link to comment Share on other sites More sharing options...
cje001 Posted May 15, 2011 Share Posted May 15, 2011 My TT BPU gets 22mpg mostly town driving but not too much crazyness.. Quote Link to comment Share on other sites More sharing options...
THE ANIMAL Posted May 15, 2011 Author Share Posted May 15, 2011 ah that easy... thanks Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.