BlownCorona Posted October 9, 2012 Share Posted October 9, 2012 So after reading a bit of the rotory viva repower thread and various fuel economys. it got me thinking, actually i had already been thinking, that my turbo charade is possibly not being as economical as it should be. i just ran a full tank though it, ~35 litres, and returned 300kms. meaning about 8.5 km/l Does anyone know what i should expect from a car like this? i know o2 sensor wear out and cause economy issues. there is also a sensor in my exhaust, either egt or o2 (or maybe something else, but its a pretty thin probe like one) that i cant find a plug in the loom for what so ever. Thoughts? Quote Link to comment Share on other sites More sharing options...
bubblegoose Posted October 9, 2012 Share Posted October 9, 2012 take a look down at the right hand side of the drivers floor, foot look too heavy? my mrs car has nearly twice the frugleness when she drives than when i drive and thats both our 'normal' driving Quote Link to comment Share on other sites More sharing options...
BlownCorona Posted October 9, 2012 Author Share Posted October 9, 2012 im pretty aware that this is a contributing factor, just wanting to make sure that its 'within spec' as its been a long time since ive owned a pretty economical fuel injected car its still a shit load cheaper to run than the corona Quote Link to comment Share on other sites More sharing options...
snapper Posted October 9, 2012 Share Posted October 9, 2012 is that round town, highway, or a mixture of both? I think most cars have a fuel tank large enough to provide a range of around 650kms on a trip with moderate-to-frugal driving. who knows if the engineers at daihatsu provided a larger tank into the charade when they slapped a hairdryer in under the hood? Quote Link to comment Share on other sites More sharing options...
phtmbl Posted October 10, 2012 Share Posted October 10, 2012 from what i can remember back when we were running aroung in the model before that one with the same engine that was getting real high kpl, 10 liter would get us at least 130k Quote Link to comment Share on other sites More sharing options...
BlownCorona Posted October 10, 2012 Author Share Posted October 10, 2012 i can get about 100km from 10L but i could *probably* drive a little more eco friendly, i dont know. might price up a new O2 sensor and chuck it in anyway, any other things that could cause economy to rise? Quote Link to comment Share on other sites More sharing options...
0R10N Posted October 10, 2012 Share Posted October 10, 2012 8.5km/litre doesn't sound right at all. it's not a 1:1 comparison I know, but even my supercharged MR2 returns between 11-13km/litre mixed town and open road driving (recently did a trip out of town which got me 500km from 35 litres, and I don't nana it) with that said, a lot of the smaller turbo cars don't get great open road economy due to lack of torque, gear ratios, and the tiny turbo being on boost all the time. Do you have a boost gauge plumbed in? Keep an eye on manifold vacuum at cruise speeds - if you're close to 0mmHg on the gauge, that won't be doing wonders for economy at all. also unsure if these cars are super sensitive to the O2 sensor being faulty or not. Quote Link to comment Share on other sites More sharing options...
BlownCorona Posted October 10, 2012 Author Share Posted October 10, 2012 ive got a good boost gauge, usualy about 15"hg on the gauge, and around town i really have to want the boost to get it, not much happens on accident. that 8.5 was purely from town driving. Quote Link to comment Share on other sites More sharing options...
japawagons Posted October 10, 2012 Share Posted October 10, 2012 If your 8.5L/100 Km is based completely off around town driving then I don't think you have anything to worry about, I think that seems like a very reasonable figure... Quote Link to comment Share on other sites More sharing options...
snapper Posted October 10, 2012 Share Posted October 10, 2012 the car weighs what, 800kgs, and has 3 tiny cylinders... it's like your new g/f is a petite size 8, but you take her out for drinks and dinner and she devours a chinese banquet, and is drinking a jug for every schooner you put down. and then has a vindaloo on the way home. you'll be wondering if she has worms... or a pair of nads. I used to drive a G11 NA for work back in the late 80's, it was one of our pool cars and used to get a hammering. seemed happier in third at 100kph, nobody drove it with a light foot, and it still seemed to take going to the petrol pump as a slight on it's character - a wowser car at the bowser. the gtti owners club provides the following specs wrt fuel economy (with my conversions added) for your model: Urban: 37.2 mpg (7.6l/100km) @ 55 MPH: 54.3 mpg (5.2l/100km) @ 75 MPH: 37.3 mpg (7.6l/100km) so yes, your figures seem very slurpy - 8.5km/l is 11.7l/100kms (or 25 miles per your imperial gallon). you'll be wanting to figure out where your girl is throwing that extra 5 litres for each 100kms. is she throwing it down her trousers, or into the plant on the bar? I'd guess a wideband is going to give you lots of info - surely in this case it's going to be way-rich, or a fuel leak? Have you done the basics - air filter, vacuum leaks, fuel lines good, all sensors functioning as expected? Plugs leads and coil in tip-top spec? The gtti oc has some essential downloads - including a troubleshooting manual for the CB-80. check out http://www.gttioc.com/index.php/article ... ifications hope that helps cheers! edit: do download the manual (assuming its for your engine), I'd expect that working your way through that with each of the checks should see you suss the problem. Quote Link to comment Share on other sites More sharing options...
bubblegoose Posted October 11, 2012 Share Posted October 11, 2012 are they fitted with an air flow meter? best tune up ever is getting theat cleaned and re-calibrated also if there is an air intake temp sensor check that, when they fail it can tell the ecu its fucking freezing and will crank the fuel up Quote Link to comment Share on other sites More sharing options...
yoeddynz Posted October 13, 2012 Share Posted October 13, 2012 Attach I think most cars have a fuel tank large enough to provide a range of around 650kms on a trip with moderate-to-frugal driving. Not mine! I dream of such figures! I have attached a small balloon to my right foot and it has not helped. But 8.5L doesn't seem too bad for town driving? And Orion- 500 Kms on a 35 litre tank from your SC mr2! Wow.. I never got that from mine. I used to drive from Blenheim to Chch and see if I could do the trip without the little green SC dash light coming on just to be super cheap. Quote Link to comment Share on other sites More sharing options...
BlownCorona Posted October 14, 2012 Author Share Posted October 14, 2012 i have downloaded both manuals related to my car from the gttioc, such usefullness. i will check out those sensors for sure! 8.5 is great for a turbo. but if i can acheive more/some systems are failed, i would like to fix them. Quote Link to comment Share on other sites More sharing options...
Testament Posted October 14, 2012 Share Posted October 14, 2012 Wait a second - are you acheiving 8.5L per 100km - or is it 8.5 km per Litre? the first would seem approximately right for the gtti around town with relatively normal driving/alot of short trips etc. but 8.5km per litre would be awful for that thing or mean that your are thrashing its panties off all over the show. Quote Link to comment Share on other sites More sharing options...
BlownCorona Posted October 15, 2012 Author Share Posted October 15, 2012 umm, the 300kms achieved divided by the 35 litres used = 8.5 kms per liter yeah? its a pain as currently the car is away in bits getting painted so i cant check over things at the moment. Quote Link to comment Share on other sites More sharing options...
BlownCorona Posted October 15, 2012 Author Share Posted October 15, 2012 also i was driving it nicely, hardly ever on boost. around town, mostly short trips (under 30 mins) Quote Link to comment Share on other sites More sharing options...
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