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GM / General Motors: '86 Olds Calais hydraulic clutch problem...

  1. #1
    Cory
    Guest

    '86 Olds Calais hydraulic clutch problem...

    I'm looking at an '86 Olds Calais with the little 4 banger and 5 speed. It
    grinds when you put it in reverse, less severely when you pump the clutch a
    little. You can also sometimes feel the clutch dragging in forward gears
    when the pedal is to the floor.

    Before I buy the car I want to try bleeding the clutch and ensuring the
    fluid is full. What type of fluid does this car take for the clutch? I would
    guess DOT 3 brake fluid, but I want to be sure first. Also, what is the
    procedure for bleeding a clutch (I would assume it's the same as bleeding
    brakes, but want to be sure) and where are the valves on this car to bleed
    it? Also, is there any way that if after bleeding and filling the clutch
    hydraulics the problem is still there that I can identify if it's the slave
    or master cylinder? The master cylinder ought to be quite easy to change,
    but what is involved in changing the slave cylinder? Thanks a lot for any
    information.

    Also, the shifter is kind of hard to get into and out of gear. It's not
    smooth and easy to shift like my Prelude is. What may be causing this? Is
    there anything in the shift linkage that may need to be tightened up and/or
    greased?

    Cory



  2. #2
    shiden_kai
    Guest

    Re: '86 Olds Calais hydraulic clutch problem...


    "Cory Dunkle" wrote
     

    This will most likely be a waste of your time.....you have some
    sort of hydraulic problem that will not be be resolved by
    bleeding.
     

    Just use regular brake fluid for the clutch. If you can find the slave
    cylinder,
    (it should be toward the front side of the transmission) there should be
    a bleed screw on the slave cylinder itself. The best way to bleed clutches
    is to have an assistant push the clutch pedal to the floor, then you crack
    the bleed screw and allow the pressure plate to do the work of pushing
    the slave cylinder piston back in it's bore.Then tighten the bleed screw
    "before" your assistant releases the pedal....release the pedal...check
    your fluid level and adjust...then repeat.
     
    slave 

    On a vehicle that old....it's not a good idea to replace the master
    or slave by themselves. It's best to just replace them as a set...and
    in fact, often GM only sold them as a set. If the slave is an external
    slave...(which I believe it is on that year of car)...then the slave is
    actually easier to change then the master. Two nuts and off she
    comes.
     
    and/or 

    It would be a mistake to try to compare the shift qualities of
    a Honda Prelude and a shitbox like the Olds Calais.

    Ian



  3. #3
    Cory
    Guest

    Re: '86 Olds Calais hydraulic clutch problem...


    "shiden_kai" <com> wrote in message
    news:xdCvb.454026$.. 

    I'm pretty sure it's just old/dried/cracked seals in one or both of the
    cylinders which are leaking and don't hold pressure. I'd rather use a
    logical process of elimination first though, to be sure I'm not wasting
    money on parts I don't need. This car is strictly a beater. I will be
    getting it for $250 and I should it end up costing me more than $500 I'm
    gonna try to get rid of it for whatever I've got in it so far. I had the
    same idea about the Prelude, but unfortunately that needs several hundred
    dollars worth of parts now, so I'm looking fora replacement econo-box. The
    main idea here is cheap. This car is from the original owner who ordered it
    from the factory (not drive off the lot) and I know has taken good care of
    it. He parked it 1-2 years ago.. When he parked it everything was working
    well and it had passed inspection without a hitch. From my preliminary
    inspection the only things I see that it needs fixed are the clutch issue,
    and possibly a new set of front brake pads which is no big deal as they are
    only $15-$20.
     
    bleeding 
    bleed 
    clutches 

    Sounds easy enough... Very similar to bleeding brakes.
     
    change, 
    any 

    As I said, the idea with this $250 car is cheap. I want to put as little
    into it as possible. If my fiance wasn't going to be driving it too I'd say
    to hell with the clutch and just shift without it. Anyway, the slave
    cylinder appears to be external, as I remember seeing it on the transmission
    and I also saw pictures of the both cylinders when I priced them online. If
    there is any way to be sure which one is the problem it would be great as I
    hate to spend $125+ on parts for an econo-box/beater if I don't need to.
    That's more than I'd like to spend to 'get it running', but if I see nthing
    else wrong with the car it's probably worth it.
     
    Is 

    I would think that one should be able to shift into and out of gear easily
    on any properly functioning transmission+shifter, even if it is a little
    sloppy. I doubt the car would have sold too well if it shifted like it does
    now when new. Now that I think about it though a big part of the problem may
    be that the clutch drags a bit, which could make it a little difficult to
    get out of gear.

    Cory



  4. #4
    shiden_kai
    Guest

    Re: '86 Olds Calais hydraulic clutch problem...


    "Cory Dunkle" wrote
     

    Your method sounds like it will be logical....but in the long
    run it's not. Often the cheap way of fixing things ends up
    being the most expensive. Even if you do figure out which
    one is the culprit, replacing one is never a good idea in
    the long run, as you risk cross contamination from the old
    part to the new. And this is even if you flush the brake fluid
    right out. This is one of the reasons that GM either recommends
    replacing slave/master as a set, or they simply only sell them
    as a set.
     
    say 
    transmission 
    If 

    nthing 

    Well, I certainly can't fault you for not wanting to spend any
    money on a beater. I have the same philosophy with my own
    beaters (all I've personally driven for 20 years). But certain
    systems on the car often cannot be cheaped out on.
     
    does 
    may 

    Obviously...get the clutch working properly and then see how it
    compares. But I've been working on GM vehicles for over 20
    years....and GM shifting qualities on their front wheel drive cars
    has always been marginal. Even when new.

    Ian




 

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