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Thread: Anyone good with manual transmissions?

  1. #1
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    Arrow Anyone good with manual transmissions?

    I'm a decent mechanic, I know my way around the garage but when it comes to transmissions I am clueless...

    My problem(s) are this:

    1) I have very little clutch - in other words the petal is about 90% released before it engages. Once in a great while I will have to "pump it" to engage (this has only happened twice over a few months)

    2) When I am in neutral I get an interesting type of "rattle" noise unless the clutch is engaged then it's nice and quiet like it should be. When I kill the engine (in neutral not engaged) it's even worse and can definitely be pin pointed to the transmission area...

    Fluids are fine, not burnt or low... Any clues/suggestions? I am hoping to avoid taking it a shop and take care if it myself if possible... I've got cold beer in the fridge if anyone local has the knowledge and time!
    '08 Grand Cherokee Limited: "Yeah, it's a Hemi"
    '01 Wrangler 4.0L: Upgraded tunes & aftermarket bumpers is just the beginning...
    '92 Z28 Camaro 'Vert: Under Construction...



    "And so, my fellow Americans: ask not what your country can do for you - ask what you can do for your country. My fellow citizens of the world: ask not what America will do for you, but what together we can do for the freedom of man."
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  2. #2
    Senior Member HillBillE's Avatar
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    I'm guessing this is on your Wrangler?

    Sounds like either the throw out bearing, or the pressure plate.

    Either way, the tranny will have to come out.

    Both are an easy fix, and it's best to do the whole works while it's apart anyway.

    ie:
    Resurface flywheel,

    Replace clutch disc and pressure plate,

    Replace the throw out bearing,

    Inspect the slave cylinder - look into replacing if it's an internal style.


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    Quote Originally Posted by HillBillE View Post
    I'm guessing this is on your Wrangler?
    Yes it is... I'm hoping it's simpler than that - I've been reading up on transmissions and they look to be pretty straight forward but I have never been in one so I am very nervous about trying... Recently had the one in my Camaro rebuilt and it cost me an arm & a leg - I really want to avoid going through that again...
    '08 Grand Cherokee Limited: "Yeah, it's a Hemi"
    '01 Wrangler 4.0L: Upgraded tunes & aftermarket bumpers is just the beginning...
    '92 Z28 Camaro 'Vert: Under Construction...



    "And so, my fellow Americans: ask not what your country can do for you - ask what you can do for your country. My fellow citizens of the world: ask not what America will do for you, but what together we can do for the freedom of man."
    - John F. Kennedy (1917-1963) Inaugural Address, January 20, 1961 -

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    Got Beer airforce26yrs's Avatar
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    I agree with hillbille, sounds like the throw out bearing or pressure plate. Even if you think it is inside the tranny it still has to come out to fix, to take the tranny apart.
    I'm Mike, make sure you spell it right, because I do not want to get the wrong A$$hole in trouble.

    If you do not have time to do it right the first time, how do you have time do do it over?

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    MODERATOR warrior's Avatar
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    Also as Hillbillie sez.
    check the input shaft bearing on the tranny, The pilot bushing on the flywheel,
    And while you at it re-tork the flywheel.
    If you don't give up---You will never fail.



    8th Combat Engineers (Sapper) (Vietnam 66)


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    This is really sounding like something I need to take into the shop...

    From my research (and correct me if I'm wrong please) it should be shifting HARD when the Throw Out Bearing is having problems - other than the few "pumps" I had to give it shifts very smooth, both up & down...

    I really don't want to dump $1K+ into the tranny right now - I'm trying to save for a lift and tires...
    '08 Grand Cherokee Limited: "Yeah, it's a Hemi"
    '01 Wrangler 4.0L: Upgraded tunes & aftermarket bumpers is just the beginning...
    '92 Z28 Camaro 'Vert: Under Construction...



    "And so, my fellow Americans: ask not what your country can do for you - ask what you can do for your country. My fellow citizens of the world: ask not what America will do for you, but what together we can do for the freedom of man."
    - John F. Kennedy (1917-1963) Inaugural Address, January 20, 1961 -

  7. #7
    Senior Member HillBillE's Avatar
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    Quote Originally Posted by mister_hudson View Post
    This is really sounding like something I need to take into the shop...

    From my research (and correct me if I'm wrong please) it should be shifting HARD when the Throw Out Bearing is having problems - other than the few "pumps" I had to give it shifts very smooth, both up & down...

    I really don't want to dump $1K+ into the tranny right now - I'm trying to save for a lift and tires...
    When the throw out bearing first starts to go bad, or the pressure plate 'fingers' start getting weak/wearing, it will still shift fairly smooth.

    Once they go completely, shifting gets hard to impossible.

    Warrior brought up good points also, with the pilot bearing/bushing and the mainshaft bearing.

    Other than the mainshaft bearing, all the other components are outside the tranny case, between the engine and tranny.

    If it does turn out to be any of these:

    Pressure plate,
    Throw out bearing,
    Pilot bearing (or bushing)
    Clutch disc
    Flywheel

    Then the tranny doesn't even have to be opened.

    Unfortunately, being a 4WD, most shops will charge a lot in labor, becuase they have to drop the T-case and tranny

    Labor and clutch may run you near the $1K mark.

    Isn't there a Ft. Hood Chapter? Should be someone down there who can help turn some wrenches

    Pretty easy job at the hobby shop, and if it does turn out to be the tranny itself, you can save some cash by taking it out yourself, and then having it rebuilt.


    As long as the people remain armed,
    government knows that it cannot rule over the people by force.
    Those who stand in defiance of unconstitutional laws
    do so out of duty, honor, oath and love of country.


    "Certified Jeep Junky!"


  8. #8
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    Quote Originally Posted by HillBillE View Post
    When the throw out bearing first starts to go bad, or the pressure plate 'fingers' start getting weak/wearing, it will still shift fairly smooth.

    Isn't there a Ft. Hood Chapter? Should be someone down there who can help turn some wrenches
    Thanks for clarifiying! That makes perfect sence...

    Sounds like I might have to buy a few cases of and call the local MJ to the rescue...

    Thanks for the tips everyone!
    Last edited by mister_hudson; 06-25-2010 at 11:43. Reason: Brain works faster than my fingers..
    '08 Grand Cherokee Limited: "Yeah, it's a Hemi"
    '01 Wrangler 4.0L: Upgraded tunes & aftermarket bumpers is just the beginning...
    '92 Z28 Camaro 'Vert: Under Construction...



    "And so, my fellow Americans: ask not what your country can do for you - ask what you can do for your country. My fellow citizens of the world: ask not what America will do for you, but what together we can do for the freedom of man."
    - John F. Kennedy (1917-1963) Inaugural Address, January 20, 1961 -

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