1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

theres some things wrong with my car, dont know if is normal

Discussion in 'Diagnosis/Help' started by SIK_162, Aug 10, 2011.

  1. SIK_162

    SIK_162 Well-Known Member

    here are the things wrong with my car:

    the speedo is 20km too fast, would that be the ECU, coz the engine was changed by the previous owner

    there is NO TORQUE in 1st, when i put it in 1st and floor it, it takes about 6-8sec to get to 5000rpm

    the gears are grinding, i have to use force when putting it into 1st and the clutch is all the way down and when going from 3th to 2nd it's hard too, and reverse is hard to find it sounds like its in but its not then i have to put it in neutral then try again and use more force
     
  2. eNtraxGT88

    eNtraxGT88 Well-Known Member Donated!

    Re: theres some things wrong with my car, dont know if is no

    speedo: tire size will affect it, or there's a little adjuster inside when you take apart the cluster, after taking out the gauge face, to the left of the mileage counter, there's a little lever you can adjust.
     
  3. LionTR

    LionTR Well-Known Member Donated!

    Re: theres some things wrong with my car, dont know if is no

    Wow, I didn't know that.
     
  4. Thaifighter

    Thaifighter Well-Known Member

    Re: theres some things wrong with my car, dont know if is no

    Oh snap! I was about to ask that! lol thanks! :D

    Like what eNtraxgt88 said, the overall size of your wheels can alter the accuracy of the speedometer and acceleration.

    Check this website out. ;)
    http://www.miata.net/garage/tirecalc.html
     
  5. SIK_162

    SIK_162 Well-Known Member

    Re: theres some things wrong with my car, dont know if is no

    im mostly worried about my torque lol
     
  6. Seank90

    Seank90 Well-Known Member Donated!

    Re: theres some things wrong with my car, dont know if is no

    does it sound like its misssing? it might need a serious tune up or the clutch could be slipping
     
  7. jwagner162

    jwagner162 Well-Known Member Donated!

    Re: theres some things wrong with my car, dont know if is no

    im going with sean on this.....clutch time.

    -yes overall tire/wheel size will effect torque. but sounds like maybe something else.
     
  8. ST165-2765

    ST165-2765 Well-Known Member Donated!

    Re: theres some things wrong with my car, dont know if is no

    The overall diameter of the tire will make a slight difference in the speedometer but not 20km. I'm guessing you mean 20km fast when your
    going 100kph and say 10km fast when your going 50kph it should be proportional to the speed your going assuming you don't change
    gears.

    The ECU will not effect the speed on the speedometer the speedometer is strictly a mechanical device. The speedometer
    does however generate a speed pulse signal that it sends to the ECU but that shouldn't effect anything.



    Somethings definetely wrong with your engine, I'd be guessing timing but it could be anything 1 dead spark plug or who knows
    what else
    Torque really doesn't have anything to do with the tranny except to deliver the power from the engine to the wheels. If your engine
    had torque and the clutch was slipping then you'd get to 5000rpm in a couple of seconds you just wouldn't go anywhere since the
    clutch can't deliver the power to the wheels
    So no torque = engine problem



    Try bleeding your clutch line to the slave cylinder and tighten up all the connections you may have a small leak or some air
    has got in the line, also check your tranny fluid level 20+ year old cars and old axle seals so who knows how much tranny fluid
    is left.
     
  9. Stig

    Stig ST162 Guru Donated!

    Re: theres some things wrong with my car, dont know if is no

    Speedo - all Toyota's over-read by 7%. Yours sounds like the tyres are too low.
    What size tyres you running? No you can't adjust it and it could also be the spring
    has been weakened, try another speedo and compare

    Torque - Cam or distributor timing out? Filters blocked? Plug gaps out? (1.1mm)

    Box - Bleed clutch, replace gear oil with 80w/90
     
  10. eNtraxGT88

    eNtraxGT88 Well-Known Member Donated!

    Re: theres some things wrong with my car, dont know if is no

    I don't know about other markets, but the canadian ones i've seen, both the GT (190km/h) and GT-S (240km/h) ones are the same speedo (637 revs = 1km). there's a lever where it adjusts. i played around with it and now i've put a 240km/h gauge face on a originally 190km/h gauge and the speed is right, verified by gps.
     
  11. LionTR

    LionTR Well-Known Member Donated!

    Re: theres some things wrong with my car, dont know if is no

    Are you referring to this little lever?:

    [​IMG]

    My speedo overreads more than 10%, I guess because of the different final gear ratio, can you tell me which way do I have to adjust it and with what amount?
     
  12. eNtraxGT88

    eNtraxGT88 Well-Known Member Donated!

    Re: theres some things wrong with my car, dont know if is no

    yes sir! that arm goes behind the spring, and if you see to the right of the spring, it will move that arm to adjust the tension of the spring.

    overread = move the arm down, the arm on the right will move up causing the spring to tighten up a little

    DISCLAIMER: I had to play around with this for a good hour or so. DO MICROADJUSTMENTS and verify with a GPS. That adjusting arm is VERY sensitive. Also try to NOT TOUCH the spring itself. One little nick on it will also change the speed reading.
     
  13. LionTR

    LionTR Well-Known Member Donated!

    Re: theres some things wrong with my car, dont know if is no

    Wow that was quick :) I edited my previous post, can you tell me which way and what amount?
     
  14. eNtraxGT88

    eNtraxGT88 Well-Known Member Donated!

    Re: theres some things wrong with my car, dont know if is no

    edited my post as well.
     
  15. LionTR

    LionTR Well-Known Member Donated!

    Re: theres some things wrong with my car, dont know if is no

    Thanks! I'll try it out :)
     
  16. SIK_162

    SIK_162 Well-Known Member

    Re: theres some things wrong with my car, dont know if is no

    tyre size is 205/45/R17

    i have a new high-flow filter probably done 1000km

    how do i bleed the clutch???


    my tyre size is 205/45/R17

    i got a new high-flow filter it's probably done 2000km

    how do i bleed the clutch
     
  17. LionTR

    LionTR Well-Known Member Donated!

    Re: theres some things wrong with my car, dont know if is no

    Your tyre size is a bit bigger than OEM, so that should make the gauge underread a bit, not overread. Problem is elsewhere.
     
  18. ST165-2765

    ST165-2765 Well-Known Member Donated!

    Re: theres some things wrong with my car, dont know if is no

    If you know how to bleed your brakes then bleeding the clutch is pretty much the same
    [​IMG]
     

Share This Page