If slave master cylinder is bad, will that cause the car not to hold when parked in gear?
Car had new slave cylinder put in and fixed again under warranty recently. When Mom drove 2 weeks ago lost power(not motor). I looked. and drove car and could't find any problem. 1 week later same loss of power. I checked car and wong drive. Just rolls like in neutral when in gear. Transmission shop over phone says clutch. Could a fault slave master cylinder cause car not to hold when parked in gear or not have any power to transmission. Do we have them fix warranteed sleeve. again. Or does it sound like needs clutch.
My car has 120000 miles.
My car has a manual transmission.
Experienced mechanics share their insights in answering this question :
From your explanation of the situation, it sounds to me like your vehicle may need a new clutch. If you are in gear and the vehicle struggles to move and the engine speed increases, the transmission is slipping. A failure in the hydraulic part of the system may make it difficult to drive the vehicle or change gears. Consider hiring an experienced technician like one from YourMechanic who can come by and take a closer look at your slipping clutch and offer a more personal diagnosis.
How to Identify and Fix Common car Problems ?
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Engine revs increase without the car accelerating, particularly on hills. The bite point on the clutch pedal is very high. Gears are difficult to select. Gearbox crunches or jolts when a gear is selected.
If the master cylinder is leaking or failed internally, the clutch will not fully disengage the transmission from the engine when the pedal is depressed. As a result, getting the transmission into a different gear won`t be easy, particularly when the engine is running.
Yes it may cause problems. You could put stress on the transmission input shaft and gears, the engine crankshaft and the drive train of the vehicle. Some of these components could get broken.
Abnormal Clutch
A change in the clutch pedal is one of the best faulty clutch slave symptoms. If the pedal feels spongy, it may be an indication of a slave cylinder problem. The pedal may also stick to the floor when pressed, not allowing the clutch to properly disengage.
The classic symptom of a failing master cylinder is a brake pedal that “dives” or sinks slowly to the floor while pedal pressure is being applied. Another sign to look out for is any leaks around the master cylinder. If a seal is worn out, it may leak past the seal and onto the pushrod that attaches to the brake pedal.
Changing the slave cylinder is also recommended when replacing the clutch or removing the transmission. Replacing the clutch in isolation may lead to the need for further costly repairs shortly afterwards.
Sudden failure is most often caused by a broken or loose clutch cable, linkable or a failed hydraulic master/slave cylinder. There can also be leaks in the hydraulic line or even the disc could be contaminated with something like dirt or debris.
No resistance in the clutch pedal
If you press the clutch pedal and it feels extremely loose or has no resistance at all, it may indicate a problem with the master cylinder. This could be due to a loss of hydraulic pressure caused by a faulty cylinder.
If it`s “bad` it will cause the clutch pedal to sink to the floor. A clutch that “goes out” usually means it fails to connect the engine power to the wheels. It`s disk is worn out, and entirely the opposite of a clutch master cylinder that fails to “disengage” the clutch from the engine.
Assuming the clutch slave cylinder is leaking, I recommend replacing both. It could be that your vehicle`s lack of clutch hydraulic pressure is a failed clutch master cylinder.
If you need to replace the slave cylinder, the transmission will have to be removed from the engine to gain access to the part.
That said, there`s really no defined time period for clutch slave cylinder replacement – it`s not a part of your regular maintenance. Chances are that if you own your vehicle for long enough, or if you`ve bought an older vehicle, it`s not unreasonable to think that at some point, the slave cylinder will begin to leak.
Even if your clutch pedal is on the floor due to a bad master/slave problem, your car should still start. You can always have it in neutral so it starts freely. You must be sure it is not in gear if you suspect a hydraulic problem with your clutch.
A failed master cylinder can cause a low or spongy brake pedal but generally does not make any noises. If however you hear a loud hissing sound when the brakes are applied, the power/vacuum brake booster may have a vacuum leak.
Master cylinders should last between 70,000 and 110,000 miles. They could last forever, but they have rubber seals that wear out over time. A bad master cylinder compromises your vehicle`s stopping power.
In the case of hydraulic systems, there are three easily detectable symptoms that give early warning of root cause conditions. These symptoms are abnormal noise, high fluid temperature and slow operation.
Broken springs, overheating, and even a worn-out clutch disc can cause problems with the clutch pressure plate.
Your clutch uses brake fluid to transmit hydraulic pressure to activate your clutch. Brake fluid adsorbs water from the air meaning that over time this water can corrode internal metal parts such as the inside of the clutch master cylinder and clutch slave cylinder.
Clutch Master Cylinder ( CMC)
Replace the CMC if: The clutch pedal slowly sinks to the floor and does not return. There is a leak from the surface of the push rod coming out of the piston or from the connectors (Image). In such a case, the clutch master cylinder may also leak fluid inside the car.
“Riding” the clutch is the most common reason for premature clutch failure. Even the slightest pressure on the pedal will partially disengage the clutch, causing the release bearing, pressure plate and flywheel to overheat.
The most common issue for clutch master and slave cylinders is contamination of the hydraulic fluid or even the wrong type of hydraulic fluid being used. The smallest drop of contaminant, such as engine oil, gearbox oil, washer fluid or antifreeze can cause the rubber seals within the cylinder to swell up overtime.
Open the bleeder valve – Use a line wrench to open the bleeder valve to the slave cylinder. Place a drain pan under the slave cylinder to catch the brake fluid. Bleed the brake fluid – Leave the bleeder open and allow gravity to bleed the slave cylinder for one to three minutes.
To start the car, press down the clutch pedal, broken or not, and turn the key. The vehicle should lurch ahead unless it has an interlock ignition switch linked to the clutch. Crank the engine for a few seconds at a time until the vehicle lurches and continues to run.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
If slave master cylinder is bad, will that cause the car not to hold when parked in gear?
ANSWER : From your explanation of the situation, it sounds to me like your vehicle may need a new clutch. If you are in gear and the vehicle struggles to move and the engine speed increases, the transmission is slipping. A failure in the hydraulic part of the system may make it difficult to drive the vehicle or change gears. Consider hiring an experienced technician like one from YourMechanic who can come by and take a closer look at your slipping clutch and offer a more personal diagnosis.
Replaced clutch master and slave cylinder, but my car still won’t go into gear while running
ANSWER : If the hydraulics are working correctly, there are a couple of things that could be wrong with the clutch that would prevent it from releasing. Unfortunately, any of them will require removal of the transmission for repair.
At 191,000 miles, it could be that your pressure plate has failed and is not fully releasing, or it could be that the disk is severely worn and there is an accumulation of debris between the disk and the plate which would also keep it from releasing. Either of these would be corrected with a clutch replacement.
If you contact YourMechanic, they can send a technician to your home to evaluate your problem and help you figure out what to do next in order to avoid any unnecessary repairs.
What is the name of the clip that holds the slave cylinder line into the slave cylinder 1994 Ford Explorer
ANSWER : Hi there. The clip comes as part of the slave cylinder. The clip is called a quick release line clip. This is a plastic retainer that puts pressure on the line to hold it in place. Typically you cannot purchase this by itself.
Clutch not working after replacing slave cylinder and master cylinder
ANSWER : Hello. We will be happy to help you with your vehicle. It sounds like you have a problem with your throw out bearing. You would likely need to drop the transmission once again and check that the installation of the throwout bearing is proper. You may also try to peel back the boot around the slave cylinder to see inside of the transmission. By doing so you may be able to see possible damages on the throwout bearing. It will be a great idea to use a stethoscope before you take the vehicle back apart to help pinpoint exactly what portion of the transmission coming from. Another very important thing that you should check are your axle’s, make sure they are seated correctly inside of the transmission.
Car dealer says there is a slight noise in transmission,then says it’s the slave cylinder, does that cause a noise? 2003 Mitsubishi Eclipse
ANSWER : Hello – no, a slave cylinder will not create noise – clutch or transmission – on it’s own. Noise when the clutch is out, and the transmission is in neutral, is generally the transmission input bearing or countershaft bearings. Noise when the clutch is pressed can be the clutch throwout bearing or pilot bearing. I recommend a transmission inspection by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.
Car in park shifter will move through gears but wont shift through the gears its stuck in neutral have emergency brake on so it wont roll
ANSWER : From what you’ve described, it sounds like the shifter cable came off at the transmission or the shifter. I’d suggest checking the shift linkage on the transmission to see if the cable came off. This is due to the connector end bushing falling apart and not being able to hold the cable on any longer. Some cables have to be replaced as a whole and as with others the bushing can be replaced to fix the cable. I’d suggest contacting a certified technician, such as one from YourMechanic, who can come diagnose your shifting issue and make the necessary repairs to your vehicle. Good luck.
Gear selector cable/linkage loose, car will not start
ANSWER : Hi there – based on your description, I believe part of the gear selector cable/linkage is no longer anchored or connected. Besides the "free movement" of the shifter as you describe, it is also not registering properly with the neutral safety switch – which prevents engine start. I would recommend having a mobile, professional mechanic, such as one from YourMechanic examine your Saturns shifter mechanism. S/he will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.
my car gear is stuck in drive but the gear shift goes to park car is in acc postion wont crank or swicth to off to remove the key
ANSWER : Hi there, thanks for writing in.
It sounds like you most likely have a broken shift cable, or a failed shifter assembly. A failure of either part would allow you to move the shifter handle to park, while the transmission actually remains in drive. Because it could be either of these parts, I would recommend having a qualified professional, such as one from YourMechanic, diagnose your shift issue.
