1. Welcome to TRD Forums! A community for Toyota, Lexus, and Scion Enthusiasts. To enjoy all the benefits of the site, we invite you to signup.

Engine Weird Fuel Economy on my car....

Discussion in 'Powertrain' started by ghoztrider, Mar 15, 2005.

  1. Offline

    ghoztrider New Member

    Message Count:
    935
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Suburb of Philadelphia, PA
    Weird Fuel Economy on my car....

    I'm getting ~230 miles on my tank right now with very easy driving. Its all city driving. I live in the suburbs so no highway running for me. I run it to just before the light turns on so i'm guessing its 11 gallons since 13 gallons is the full tank.

    I get 20.9mpg. Thats way below average. I have a 2000 automatic corolla with a ram air intake and a trd muffler. I stopped warming up my engine. I'm running 89 gas right now. I stopped using 93 cause it gave the same or worse fuel economy.

    Any suggestions?
    I replaced the spark plugs about 5000 miles ago. I have 45k on my car. I think its either my MAF sensor on my intake or my spark plugs are bad or something. I can't check cause its insanely cold here in philly so i gotta wait.

    Another thing is when i turn on the car in the morning and pull out a minute later and i stop. The car feels like its about to shut off. But i waited and waited and it doesnt' stall but the rpm just drops extremely low i can hear it. But as soon as it warms up just a minute of driving later it doesn't do it anymore.

    Maybe something is wrong with my pistons or something. I should be getting near 300 on my tank.
  2. Offline

    Vamp Gunmetal 2001 Corolla S

    Message Count:
    1,756
    Likes Received:
    21
    Trophy Points:
    588
    Location:
    Rosedale, MD
    Vehicles:
    Gunmetal Grey 2001 Corolla S
    It's all the stop and go city driving that kills your milage. If you drove on the highway, you would have better gas milage.
  3. Offline

    Denver Rolla 98 impreza

    Message Count:
    2,887
    Likes Received:
    0
    Trophy Points:
    588
    Location:
    Lakewood, CO
    yeah but 20 mpgs thats a little insaine. I drive all city an get 35.
  4. Offline

    Phozenstone New Member

    Message Count:
    1,315
    Likes Received:
    0
    Trophy Points:
    0
    35!!!??? that is almost impossible man, the dealer and toyota say that on the tags on the new vehicles but there isnt really anyway to hit that much unless u go a constant 50mph until your tank goes dry.
  5. Offline

    Vamp Gunmetal 2001 Corolla S

    Message Count:
    1,756
    Likes Received:
    21
    Trophy Points:
    588
    Location:
    Rosedale, MD
    Vehicles:
    Gunmetal Grey 2001 Corolla S
    I get 30-32.
  6. Offline

    ghoztrider New Member

    Message Count:
    935
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Suburb of Philadelphia, PA
    This sucks there has to be something wrong wit my car. With hard driving i get around 200 miles per tank. There has to be something wrong with my car
  7. Offline

    Vamp Gunmetal 2001 Corolla S

    Message Count:
    1,756
    Likes Received:
    21
    Trophy Points:
    588
    Location:
    Rosedale, MD
    Vehicles:
    Gunmetal Grey 2001 Corolla S
    Stop and go and driving in the upper RPM range a lot will kill your milage fast. I have a 4 speed auto, so when I highway drive, I'm in the overdrive gear sitting around 2K.
  8. Offline

    ghoztrider New Member

    Message Count:
    935
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Suburb of Philadelphia, PA
    I don't do highways. I drive in all milage range. Most i hit here is 55 for about 3 minutes on this one road. Then the rest is around 40-45mph. Speed limit around here is 35 and 45. So where it says 35 i go 45, Where it says 45 i go 55 usually
  9. Offline

    Denver Rolla 98 impreza

    Message Count:
    2,887
    Likes Received:
    0
    Trophy Points:
    588
    Location:
    Lakewood, CO
    thats what I calculated it at about 3 months ago. it was probly just a fluke but thats what the calc said
  10. Offline

    ghoztrider New Member

    Message Count:
    935
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Suburb of Philadelphia, PA
    What does running to lean mean? It gets too much gas in the engine and doens't use it all? And that fouls out spark plugs?
  11. Offline

    vortex Well-Known Member

    Administrator
    Message Count:
    4,110
    Likes Received:
    48
    Trophy Points:
    748
    Location:
    Westminster, CO
    hehe I get on average 25-27 in city and 29-32 on the highway... and I'm boosted... wtf?

    However... there have been a couple times that I've gone through a tank of gas (prior to going turbo) that I would get a tank that I'd only get 25mpg on when my average was 29/34.

    I've also wondered during that "aeration" process that so often happens in a pump if you're really getting what you're paying for. hehe *ponder*
  12. Offline

    fastrolla96 speedbumps..yum

    Message Count:
    813
    Likes Received:
    0
    Trophy Points:
    38
    Location:
    Oklahoma
    I don't know whats wrong either cause I have the same problem. I only get around 230 driving around the city and sometimes highway. Not only is my stupid engine eating gas like crazy, but also oil. I was like over a quart less when I changed it and the freaking oil light came on. Time for a swap. ;)
  13. Offline

    Cuztomrollaz98 MAD VLAD!

    Message Count:
    6,665
    Likes Received:
    0
    Trophy Points:
    38
    Location:
    Littleton, CO.
    I dk what I get but it's extremely low... only in 1 week on the Corolla I put almost 80 bucks on gas.... man I dk what's going on but the car is killing me.. even my Talon puts out better gas mileage and it's turbo'd wtf??? any suggestion on that one?
  14. Offline

    sddynamix Taybo Masta

    Message Count:
    300
    Likes Received:
    0
    Trophy Points:
    16
    Location:
    La Jolla, CA
    lemme know what you find out, i have the same car, 2000 Auto 4 Spd and i noticed that lately my car's been getting REALLY crap ass gas mileage (22 mpg) and I changed my plugs/pcv valve about 3000 miles ago, stock airbox w/k&n, and trd muffler.

    76k on my odo though.
  15. Offline

    ghoztrider New Member

    Message Count:
    935
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Suburb of Philadelphia, PA
    As soon as it gets warm i'm checking my spark plugs. 40's outside right now is kinda low. My hands go knumb
  16. Offline

    RexPelagi VDub

    Message Count:
    852
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Canton, Ohio.
    Anyone from 2k3corolla.org will remember me. I got 17-19 mpg on 87 with my 2003 corolla. So dont complain. I definitly had it worse. BTW thats stock.
  17. Offline

    sddynamix Taybo Masta

    Message Count:
    300
    Likes Received:
    0
    Trophy Points:
    16
    Location:
    La Jolla, CA

    I think its more of a concern than a complaint. At least mine is, 20-22 mpg is like 70% of the fuel efficiency that the vehicle should have, which would indicate a problem somewhere, that will probably compound with time as most car problems do.
  18. Offline

    ghoztrider New Member

    Message Count:
    935
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Suburb of Philadelphia, PA
    Maybe automatics just suck as they age. Cause my friends nieghbor just got a 87 honda accord coupe 5 speed. He gets ~300 miles with some what hard driving. Manuals kick ass but they are annoying i think. But i'd take a manual if i had a chance.

    PS: that car has 150k on it
  19. Offline

    JLee TD05 3SGTE

    Message Count:
    1,810
    Likes Received:
    5
    Trophy Points:
    588
    Location:
    NH
    I get ~32mpg mixed city/highway. New PCV valve..old air filter (K&N in need of cleaning)..I have over 160k on the car at the moment..
  20. Offline

    Bulletproofswordsman JDM Oroku-Saki

    Message Count:
    2,086
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Cape Coral, FLorida
    does ne1's fuel gauge needle jump, i dont mean centimeters either, i mean wehn i stop i can actually see the needle come up as if i was re-filling the car and when i go i can see the needle go down, sometimes it goes down as much as half o one of the "bars"
  21. Offline

    ghoztrider New Member

    Message Count:
    935
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Suburb of Philadelphia, PA
    I guess i'm pretty stupid or stupid but wat is the PCV valve? How does it look like? What does it do? Is it easy to replace?
  22. Offline

    Phozenstone New Member

    Message Count:
    1,315
    Likes Received:
    0
    Trophy Points:
    0
    damn man, i only get like 250 for my entire tank, i do both highway and stopngo driving.
  23. Offline

    rice cracker VVT-i's Cracker

    Message Count:
    319
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Sacramento, CA
    Check your oil and plugs. Those are both common reasons for low gas mileage, or kilometerage if you're a crazy canuck :p

    I'm getting about 26mpg but my oil pan was leaking so the level was low and I've got my snowboard rack on so...
  24. Offline

    ghoztrider New Member

    Message Count:
    935
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Suburb of Philadelphia, PA
    I just did an oil chance. So i should be getting good mileage. This sucks!

    can anyone tell me about PCV Valve from by previous post?
  25. Offline

    vortex Well-Known Member

    Administrator
    Message Count:
    4,110
    Likes Received:
    48
    Trophy Points:
    748
    Location:
    Westminster, CO
    hehe thats actually my average... 250-270 :) but i do a lot of city driving myself with some highway tossed in there.
  26. Offline

    Cuztomrollaz98 MAD VLAD!

    Message Count:
    6,665
    Likes Received:
    0
    Trophy Points:
    38
    Location:
    Littleton, CO.
    shit I changed my oil and plugs about like 2 weeks ago man I dk what the problem should be though but my rolla is just breathin gas in and out man I drive to work which is like less than 3 miles and it marks empty so I dk wth is goin on with that car lol...... *sigh* damn.... I guess I'll check into the whole PVC valve too...
  27. Offline

    Rolla95 Rollin' Out y0

    Message Count:
    2,981
    Likes Received:
    0
    Trophy Points:
    488
    Location:
    Deptford, New Jersey
    my friend use to have a 94 corolla 1.6L with 190,000 on the odo and he got about 30mpg, i have a 95 corolla 1.8L with 130,000 and i get like 27-28, wtf is with that shit, lol...i only have .2liters more, lol and less milege
  28. Offline

    statik New Member

    Message Count:
    1,121
    Likes Received:
    0
    Trophy Points:
    0
    Yeah, check the PCV valve, it should be clean and free moving inside. Make sure the filter on your air intake is clean, not too oily.
    When's the last time you've cleaned your fuel injectors or checked your fuel injection system? Could be dirty injectors or fuel rail. Could also be something going on with your emissions control system.

    You should just get it scanned. It may be the quickest way to find out exactly what the problem is.
  29. Offline

    Cuztomrollaz98 MAD VLAD!

    Message Count:
    6,665
    Likes Received:
    0
    Trophy Points:
    38
    Location:
    Littleton, CO.
    well if something was to be wrong with my emissions they would've told me at the emissions test place since I had mine done not less than a month ago too.... I'll probably add one of those fuel cleaning additives to see how that works and check the PVC valve which I've never worked with so I have no idea where it sits or what it looks like so I dk lol and we as for the air filter is brand new too, spark plugs are new too, and fresh oil and tranny fluid (if that affects which I don't think it does) but well pretty much the car is up and running good but maybe is the fuel system or the PVC.... I hope
  30. Offline

    ghoztrider New Member

    Message Count:
    935
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Suburb of Philadelphia, PA
    what does a PCV valve do and where is it and how does it look like?

Share This Page