izat 1 Posted February 26, 2015 Report Share Posted February 26, 2015 helpppp!!!! less than 11 mpg my golf vr6 1993 24v 2.8the mechanic used the co probe and said that the car should do 14 to 15 mpg and from the searches i did vr6 sshould do between 20 to 27 mpg what should i do? Link to post Share on other sites
Bealieboy 1,625 Posted February 26, 2015 Report Share Posted February 26, 2015 Get it on a diagnostic. Perhaps one or two sensors have gone bad.Does it run like a pos? Or maybe you are driving in heavy traffic? Link to post Share on other sites
VR6CABBS 1,311 Posted February 26, 2015 Report Share Posted February 26, 2015 Get it on a diagnostic. Perhaps one or two sensors have gone bad.Does it run like a pos? Or maybe you are driving in heavy traffic?Or with a lead boot. Lol. Bealieboy 1 Link to post Share on other sites
izat 1 Posted February 26, 2015 Author Report Share Posted February 26, 2015 in fact i like the noise ut makes but does my way of driving drop the avrg mileage by about 60% ? Bealieboy 1 Link to post Share on other sites
Bealieboy 1,625 Posted February 26, 2015 Report Share Posted February 26, 2015 in fact i like the noise ut makes but does my way of driving drop the avrg mileage by about 60% ? If you're giving it the "who's your daddy" all over the place then I would expect very poor gas mileage, easily as low as your getting, and if you're sat in traffic, that will affect economy too. I average around 30mpg with mixed driving and 16-18mpg on short journeys. VR6CABBS 1 Link to post Share on other sites
izat 1 Posted February 27, 2015 Author Report Share Posted February 27, 2015 well i'de like to get 18 mpg am getting only 11 mpg Link to post Share on other sites
Bealieboy 1,625 Posted February 27, 2015 Report Share Posted February 27, 2015 I'm at a loss then fella, I don't know how to help with so little info about the car or journeys you're doing Link to post Share on other sites
Mk3highline 287 Posted February 27, 2015 Report Share Posted February 27, 2015 What spec is the car what ecu etc Link to post Share on other sites
izat 1 Posted February 27, 2015 Author Report Share Posted February 27, 2015 i drive mostly in city some of the time i drive agressivly flat out no tuning done just a motor replaced like 8 months ago not new motor thoughits 2.8 liter 24v my car is 1993 but 24v was issued in later years so there might be something wrong or something missing since the woring harness is for an older engine emissions test passed btw the value was 0.5 on 20000 rpm Link to post Share on other sites
Mk3highline 287 Posted February 27, 2015 Report Share Posted February 27, 2015 Is it a golf? Where are you from?I'm running similar set up and I easy get 150+ on half tank of fuel more if I take it easyLet us know what ecu is in the car obd1 obd2 We need more details if you're can get themIt will pass emissions as the ecu can adapt for part throttle but when your driving fast it will be overfueling it's coc offEven then it's not straight forward to swap engines so go ask the garage who did the work Bealieboy 1 Link to post Share on other sites
izat 1 Posted February 27, 2015 Author Report Share Posted February 27, 2015 i went today and asked the previous owner he is not sure if the engine is 24v or 12 v tomorrow i will ask the mechanic who did the swap my car is obd1 and am almost sure that the ecu is the stock ecu and everything is except the cold air intake filter but am sensing that it is some electric problem cause it looks messed up in the engine bay cut and taped wires :/ Link to post Share on other sites
Mk3highline 287 Posted February 27, 2015 Report Share Posted February 27, 2015 Looks same as my engine bay lolHave you got a picture of the engine Link to post Share on other sites
izat 1 Posted March 1, 2015 Author Report Share Posted March 1, 2015 .. Link to post Share on other sites
Swivelonit 119 Posted March 1, 2015 Report Share Posted March 1, 2015 A gallon is smaller in the USA so you will get less (I am assuming you are in the USA because we don't have Gas here), my 24valve did about 25 mpg when it was on the road, this was after replacing Lambda sensors and a few other bits and pieces Central VW sorted out for me. Bealieboy 1 Link to post Share on other sites
izat 1 Posted March 4, 2015 Author Report Share Posted March 4, 2015 after all it is a 12 valve 2.8l and with driving it like a gentleman it doeas like 4 to 5 km per liter last night i noticed a new issue that on idle the rpm rises to 1100 and lower to 800 rpm randomly even when i press the throttle down to a steady position the rpm shakes up and down Link to post Share on other sites
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