Clutch Master and Slave Cylinders...other mild clutch issues - Focus Fanatics
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Old 04-26-2014, 10:50 PM   #1
jj93egt
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Clutch Master and Slave Cylinders...other mild clutch issues

I purchased an 02 ZX3 about 2 months ago. It has been rock solid reliable on some awful commutes.

As with any used car, I am noticing a few issues.

If the vehicle is left for a few hours or days the clutch pedal feels low and disengagement is right off of the floor. If I pump the pedal a few times, everything is fine.

There really is no pattern to when it will do this. It can be fine if left alone for 5 days, or start acting up after 10 minutes of driving.

It is not really too bad, but when severe traffic starts, it can be a real nuisance to have to pump the pedal every 20 feet for 60 miles.

I assume that the master or slave is bad. If so, do you all replace them in sets? I usually do that on my other vehicles.

Also, will any store brand do? I love buying from Advance Auto Parts and using their codes to save bucks, but one some vehicles (like my DSM) your mileage may vary.

Also, I notice something if I floor the gas pedal. Say I am at 2,000 RPM in 5th gear and floor it, the RPM will rise about 300 RPM very quick and then fall back, then rise at a more linear rate. To me that always spelled slipping clutch. It doesn't rise 1,000's like other slipping clutches I have encountered. Additionally, the vehicles maintainence logs show the clutch was replaced not too long ago and the previous owner advises that it was as well.

I googled around and I have found some posts indicating that this is normal for this drivetrain. Is that true, or is my clutch slipping a bit? If it is slipping, could it be related to the hydraulic issue?

I am more curious than anything. This Focus will not see hard times. All I have in mind for it is fuel efficiency and being a daily driver. If the clutch is slipping, I am sure that it will take an awful long time to manifest itself further under my foot.

Thoughts?

Thanks!!


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Old 04-26-2014, 11:15 PM   #2
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Sounds like the Master Cylinder on the clutch pedal is going out, they are known to do that. I'd replace that and then see if your still having clutch slipping issues. Some will say only use OEM, I used a Autozone one in my other focus and it works just fine, what brand you use is up to you. Most of the time they are all made by the same company (Luk makes most clutch parts for our cars).
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Old 04-27-2014, 12:38 AM   #3
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^^^ Yup - my Autozone replacement was an Luk identical to the factory Luk that was leaking (find drips inside, and onto the clutch pedal arm is usually the first sign of problems).

Slippage could be from the pumping it up to compensate for the master cyl. issue. Slave should have been replaced with the clutch, needs trans removal to replace as it surrounds the transmission shaft to push on the Clutch in these.

Always check for leakage if there is any hydraulic issue, line is very short between the master & slave so that part is easy. Leakage from the Slave comes out the weep hole at the edge of the trans. bell housing by the engine. Also easy to check.

luck.
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Old 04-27-2014, 12:52 AM   #4
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Thanks very much. I certainly hope it is not the slave based upon what I am seeing here. Too many other projects going on to consider pulling the tranny to get to it.
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Old 04-29-2014, 10:41 AM   #5
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Depends how cheap you are. I replaced my leaking master cylinder with the one from my parts car...with 394k kms on it. I soundly cursed the clips holding the pipes on, and their ridiculous location, but once I got those to let go, it was a fairly simple replacement. I've put 100k kms on it since, with no issues.

My first clue that I had master problems was my foot slipping off the pedal from the leaking fluid. Check your floor mat--you may have a small leak that's just hiding.
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Old 05-01-2014, 12:37 PM   #6
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Quote:
Originally Posted by Leora83 View Post
Depends how cheap you are. I replaced my leaking master cylinder with the one from my parts car...with 394k kms on it. I soundly cursed the clips holding the pipes on, and their ridiculous location, but once I got those to let go, it was a fairly simple replacement. I've put 100k kms on it since, with no issues.

My first clue that I had master problems was my foot slipping off the pedal from the leaking fluid. Check your floor mat--you may have a small leak that's just hiding.
Thanks for that. I am VERY cheap but not globally any more. The further away from a part being a pain to replace the cheaper I get. :)

I'll try your suggestions.
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