stuck in gear

Discussion in 'Technical' started by johnnyc, Dec 22, 2010.

  1. johnnyc

    johnnyc Member

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    hi guys,

    i keep getting stuck in either 1st or reverse gear usually while parking (on low revs)... car stalls and gear comes out normally otherwise i need 2 hands to force it out of gear when stuck....

    what is happening and what must i do to stop this?

    cheers

    johnnyc
     
  2. ezzupturbo

    ezzupturbo JDMAutomotive

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    how far off the floor does your clutch relise? you clutch could do with some adjustment or needs replacing
     
  3. johnnyc

    johnnyc Member

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    hey mate,

    its a brand new clutch. just done a twin plate back to a single plate, fiddled with it heaps and adjusted it heaps with all new parts.

    when u say adjust the clutch, from which point should i look at?

    cheers

    johnny
     
  4. ezzupturbo

    ezzupturbo JDMAutomotive

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    the adjustment on your pedal box. if the clutch is relesing right on the floor its going to be hard to get out of gear when your not moving.
     
  5. Vader

    Vader Just another guy

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    Clutch fluid?
     
  6. Lewis

    Lewis New Member

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    jsut asked my dad he has a garage that build gearboxes manual and automatic, he said if its only 1st and reverse it gets stuck in it could be synchro they can get bured up on the gears as first and reverse are on the same shaft.
     
  7. johnnyc

    johnnyc Member

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    sychro hey??? ive yet to try that thanks heaps! ive adjusted the crap out of the pedal box, throttle position, clutch master pin and etc.... guess ill give the synchro a crack. thanks again mate!

    on another note, my cold start is out of wack now having fiddled so much with all the adjustments. i need to rev the thing upon cold start to avoid engine cutting out, i thought it was a simple adjustment back to how it was but even doing so it still doesnt kick into cold start mode but rather just sits on normal revs ggrrrrrr
     
  8. Vader

    Vader Just another guy

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    Ideally you need a consult cable to do this easily.

    You have to adjust your TPS to give an output of 0.45v (in reality, 0.44v is the best you will get) at idle.

    Then make sure it is normal operating temperature (run around the block a couple of times), turn off your AC, lights and stereo, and then adjust your IACV to give between 750 and 850 RPM, again at idle.

    That's all the adjustments done. If she still runs rough, clean your CTS plugs and throttle bodies.

    Oh yeah - the synchro's are inside the gearbox - not adjustable. You can replace them, but only if you know the inside of a gearbox well. Basically replacing your synchro's is overhauling your gearbox.
     
  9. tassuperkart

    tassuperkart Its a lie I tell you!

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    It really does sound like a bleeding issue to me.
    No amount of adjustment will have a permanent effect if there is any air in that pesky system.
    Bleeding them is a complete arse due to an overly conmplicated system design. There is NO reason in hell the cluch hydraulics should be difficult to bleed but they are in this instance.
    Dont forget to pay very special attention to the 8mm steel "pipe to nowhere" with a bleed nipple just ahead of the drivers side strut tower.
    Also, unbolt tyhe slave cylinder, use some kind of "G" clamp arrangement to keep the piston in place and bleed it hanging straight down with the bleed nipple poet uppermost.

    The "pipe to nowhere" is about 1 meter of 8mm ID bent steel pipe connected to a T-piece down at the chassis rail and terminates up ahead of the high side strut tower with a metal block and a bleed nipple which is slightly lower than the pipe itself!!!!!!.

    My advice to all is to remove that uselees "pipe to nowhere", block off the T-piece it bolts into or just have a single braided line made up to replace the entire stupid setup from master cylinder to slave.
    UAS sell one for 80 odd dollars ready to go or your local hydraulics outfit could do it with some samples of the ends required to connect the the MS and slave.

    Your bleeding issues becomes a whole lot simpler once these changes are made.

    L8r
    E
     
  10. johnnyc

    johnnyc Member

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    Hi Dave,

    thanks for the insight however after adjusting idle to your recommended 750 and 850 RPM, my cold start struggles to kick in meaning on colder days i have to actually physically hold the accelerater peddle down to stop the engine from cutting out. surely thats not normal hence i jacked it up to an idling of 1050 to avoid having to hold the peddle down... hmmm your thoughts?

    cheers johnny

     
  11. Vader

    Vader Just another guy

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    You need to clean your IACV. That is what adjusts the idle to compensate for Air Conditioner etc.

    However, did you use Consult when you adjusted the idle? You can't just adjust it. Did you adjust the TPS first?
     
  12. revhead

    revhead New Member

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    if it was a twin plate back to a single that could be your problem did u check both thicknesses of both clutches side by side,,no adjustment will make any diff ,if the clutches r 2 different sizes
     
  13. dazza300zx

    dazza300zx New Member

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    I had a kennedy clutch in enother car i had it was new and failed in about 200kms.
    just because it's new don't mean it can't be it.
     
  14. revhead

    revhead New Member

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    dead right ,
    being a mechanic i find a lot of faulty parts its just how it is today
     
  15. Jeff TT

    Jeff TT Member

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    Ok well this suggests the clutch is not clearing, it could be a fluid/air/cylinder issue as when parking or slow manovering you have your foot on the clutch longer than when driving and changing gear normally.

    Here maybe your problem, did you change the release bearing carrier when the clutch was changed? reason been a twin plate clutch unit is taller and so has a shorter bearing carrier, a single clutch with the wrong carrier fitted will soon after fitting experience clearance issues due to the lever and bearing position been too far back, this gives late bearing engagement and extended slave cylinder movement both of which rob you of active clutch pedal stroke action.

    Jeff TT
     

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