Page 1 of 2 1 2 LastLast
Results 1 to 10 of 11

Thread: WON'T REV

  1. #1
    Senior Member
    Join Date
    Dec 2008
    Name
    Jason
    State
    QLD
    Location
    Broadbeach
    Country
    Australia
    Posts
    398

    Default

    Would any body have an idea of why my car wont rev?

    I've got a jdm 4age with computer, the rev limiter is 7800 but when it gets to 7200 the car bogs down and wont rev any more. It makes a really weird sound too

    Any ideas would greatly be aprreciated

    cheers

  2. #2
    Senior Member
    Join Date
    Jan 2009
    Name
    Ian
    State
    WA
    Location
    NOR
    Country
    Australia
    Posts
    564

    Default

    timing out?

  3. #3
    Oldschool Member
    Join Date
    Mar 2005
    Posts
    224

    Default

    Are you sure the rev limiter is set to 7800... my 4age in my 86 doesn't like revving over 7000... any more and it loses power and feels like its really struggling. Perhaps yours is bouncing at 7200 eg thats where the limiter is set?

  4. #4
    Veteran slide86's Avatar
    Join Date
    Nov 2008
    Name
    Huw
    State
    SA
    Location
    Hills
    Country
    Australia
    Posts
    3,526

    Default

    JDM 4age rev limiter should be around 7700rpm-7800rpm

  5. #5
    Oldschool Member
    Join Date
    Mar 2005
    Posts
    224

    Default

    if you have a stock 4age your car will make crap all power and be really struggling above 7000 rpm... why rev it higher if its bad for it and doesn't make any power...


    this is assuming the motor is stock, my apologies if it isn't

  6. #6
    Senior Member
    Join Date
    Dec 2008
    Posts
    700

    Default

    why are you trying to rev it past redline?

    power band finishes at about 7000. its probly stopping you from going any further for a very good reason. and if it is making strange noises....stop revving it so high

  7. #7
    Senior Member
    Join Date
    Dec 2008
    Name
    Jason
    State
    QLD
    Location
    Broadbeach
    Country
    Australia
    Posts
    398

    Default

    the whole head has been done and has bigger pistons with a balanced bottom end.

    it should want to rev and the limiter is definitely 7700

  8. #8
    Veteran
    Join Date
    Dec 2008
    Name
    Rob
    State
    Victoria
    Location
    Moorabbin
    Country
    Australia
    Posts
    4,255

    Default

    most sliding in a 4age is done between 5,000 and limiter, it should want to pull to redline

  9. #9
    Senior Member
    Join Date
    Dec 2008
    Name
    Jason
    State
    QLD
    Location
    Broadbeach
    Country
    Australia
    Posts
    398

    Default

    it's not that it doesn't want to pull, its haulin ass, then busts out with this shit

    it did the exact same thing tonite at about 6000rpm, feels like the brakes have just been jabbed and makes a weird sound, it will do the exact same thing in any gear or even neutral (when ever it feels like it)

    i disconected tvis, trottle position sensors to see if it made a difference but it still does it.

    any suggestions??

  10. #10
    Senior Member ae86 slide's Avatar
    Join Date
    Jan 2009
    Name
    Jason
    State
    NSW
    Location
    Gold Coast
    Country
    Australia
    Posts
    788

    Default

    get a 20 valve like mine ha ha ha! then it will rev all the way to 8000

Page 1 of 2 1 2 LastLast

Similar Threads

  1. Replies: 24
    Last Post: 19th June 2011, 04:59 PM
  2. Car won't rev past 4000rpm - JDM bigport
    By Course_Out in forum Technical - Questions
    Replies: 11
    Last Post: 21st November 2009, 02:22 AM
  3. engine runs rich and won't rev
    By --Redwork-- in forum Technical - Questions
    Replies: 4
    Last Post: 1st March 2009, 10:03 PM
  4. Engine won't rev over 4000rpm
    By LeviNafey in forum Technical - Questions
    Replies: 28
    Last Post: 7th August 2007, 10:16 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •