Hi I have a saab900 turbo16 covertable 90 and a problem with the clutch once you push it seems to work but then looses pressure and even if the pedal is all the way down the car start to roll help?
"Two_Possible_Causes_of_your_problem">Two Possible Causes of your
My experience is with a SAAB 900 convertible, not a 90...so I'm not
sure how much this answer will help you, but maybe someone else can
improve on it. There are two things I can think of that may be part
of your trouble, one if your clutch linkage is a mechanical cable,
the other if you have a hydraulic clutch setup. First off, the good
news is I doubt you have a true clutch/pressure plate problem...as
when a clutch wears out the engagement moves higher in the pedal
travel, not lower. So you probably do not need a full 'clutch job'.
Now the bad news. The first situation described below doesn't
EXACTLY fit your description but is what happened to me with my 95
SAAB Turbo Convertible:
It has a MECHANICAL clutch linkage. If yours is similar, if you
have someone push the clutch pedal while you look at the top of the
engine, you will see where a cable attaches to an arm that comes
out the driver side of the transaxel and moves the arm it is
attached to as the pedal is pushed and released.
These mechanical cables are not adjustable...and stretch over
time, resulting in incomplete disengagement of the clutch even when
the pedal is fully depressed. So the car will move when it is in
gear even with the pedal depressed...and shifting gears will often
cause a grinding noise or be physically hard to do. Other tech
boards will talk about either buying a new cable and putting double
washers on it, or buying an aftermarket cable that is adjustable. I
fixed mine (about 10,000 miles ago) by taking a 'fender washer',
cutting a notch through it, bending it into a half circle, and
dropping it over the clutch cable between the 'arm' and the 'ball
end' of the cable...essentially shortening the length of the
overall cable and bringing shifting action back into normal
The second possibility, that sounds more like what you
described, is if your SAAB has a hydraulic linkage. (I think some
years SAAB used a hydraulic clutch linkage, I have had other
vehicles with this setup, but I have not worked on a SAAB hydraulic
linkage so my comments are 'generic'.) When you have a hydraulic
setup there are two hydraulic piston/cylinders involved...one (the
'master' cylinder) controlled by the clutch pedal, then hydraulic
lines to the transmission bell housing, where a 2nd (the 'slave'
cylinder) is moved by the hydraulic fluid and moves the clutch disk
in and out.
The workings are essentially the same that brake lines use. If
you are low on hydraulic fluid the slave cylinder will not be moved
enough to fully release the clutch, causing the condition you
describe. There must be a reservoir of hydraulic fluid...if it is
low put more fluid in it. (One of my old cars shared the same
hydraulic fluid as the brakes...hopefully that isn't the case, as
I'd really rather lose a clutch than my brakes!) If putting fluid
in takes care of the trouble, GREAT! ... But why was it low? It
will tend to go down a bit as the clutch itself wears*...but more
likely is there is either a leak somewhere that would have to be
fixed...or you have a 'leaky cylinder', which in turn would have to
be rebuilt or replaced. If it is a 'leaky' master cylinder if you
"pump" the clutch a few times it might work fine for a few minutes
and then the fluid would leak past the seals and it would start to
have your gears engage again.
I suspect the latter description, of a leaky clutch cylinder,
most closely matches your description and is probably the trouble.
Again, I have not worked on a SAAB setup like this...so all I can
do from here is wish you the best of luck with it.
- one last possibility...the car I had that shared one hydraulic
reservoir for brakes and clutch, had the clutch line come from
halfway up the reservoir while the brakes were fed from the bottom
of the reservoir. So as my hydraulic fluid dropped in the resevior
(due to normal wear of brake pads and rotors) my clutch had
operational problems due to low fluid even though the cause was
worn brakes! Actually this was a good setup as having a misbehaving
clutch is a lot better than misbehaving brakes. Easy to fix by just
adding fluid...there wasn't any leak at all in my system. It is
NORMAL for hydraulic fluid to drop as brakes wear and in and of
itself is not a big problem unless you let your brakes wear all the
way down. So if those Swedish Engineers set the SAAB up the same
way, just adding fluid might be all you need!