Mk3 Scenic's floor-sponging brake pedal
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DJWilliams77
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On my 2014 1.5, this has recently begun to occur. Although the brakes have never been up to par with other cars, I've been driving it today and everything is fine. However, when I went to use it in the afternoon, I noticed that the pedal is very soft and goes all the way to the floor; in order to get pressure, I have to pump it. Is there a way to fix this?
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OriginalMark
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Is conditional.
I'll create a new thread specifically for this for you.
While you wait, make sure there are no visible leaks under the vehicle and that all fluid levels are checked.
Please confirm the vehicle. 1.5 is what?
I'll create a new thread specifically for this for you.
While you wait, make sure there are no visible leaks under the vehicle and that all fluid levels are checked.
Please confirm the vehicle. 1.5 is what?
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DJWilliams77
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The vehicle in question is a 2014 Scenic 1.5, and I appreciate you separating this topic.
I will check under the vehicle tomorrow for any obvious indications, but I believe I heard a hissing sound when I applied the brake while the engine was running. I will be able to confirm this tomorrow when someone is with me, even though the brake fluid level in the reservoir has not decreased.
I will also verify the 'Non Pressure' side and the seal, as I read about them in the other thread.
The car was purchased as an affordable daily driver with only 42,000 miles on the odometer. However, the brakes have never been up to par, failing to effectively stop the vehicle. The pedal feels firm and normal, as expected, but the braking performance is consistently subpar.
It had a sticking rear calliper on the left side, which the garage fixed, but it still sticks slightly and binds when reversing. On another thread, the operator mentioned that his sponge pedal needed "adjustment," so I'm wondering if the rear is also an issue.
Whatever the case may be, tomorrow I will thoroughly examine the area to spot any obvious signs.
Much obliged
I will check under the vehicle tomorrow for any obvious indications, but I believe I heard a hissing sound when I applied the brake while the engine was running. I will be able to confirm this tomorrow when someone is with me, even though the brake fluid level in the reservoir has not decreased.
I will also verify the 'Non Pressure' side and the seal, as I read about them in the other thread.
The car was purchased as an affordable daily driver with only 42,000 miles on the odometer. However, the brakes have never been up to par, failing to effectively stop the vehicle. The pedal feels firm and normal, as expected, but the braking performance is consistently subpar.
It had a sticking rear calliper on the left side, which the garage fixed, but it still sticks slightly and binds when reversing. On another thread, the operator mentioned that his sponge pedal needed "adjustment," so I'm wondering if the rear is also an issue.
Whatever the case may be, tomorrow I will thoroughly examine the area to spot any obvious signs.
Much obliged
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DJWilliams77
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veroguittar
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To check for brake fluid leaks, remove the rear electronic parking brake motors and set them aside. Just like you, I had the exact same problem for six months.
There was a tiny amount of brake fluid leaking out of one of my callipers through the handbrake screw and collecting in the motor housing. There was no obvious leakage or collection of fluid outside the motor because it was sealed shut.
There was a tiny amount of brake fluid leaking out of one of my callipers through the handbrake screw and collecting in the motor housing. There was no obvious leakage or collection of fluid outside the motor because it was sealed shut.
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DJWilliams77
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Now that I've taken out the problematic N_s rear motor, I see that the seal is dry, and I assume that the water dripping from the motor is the only problem. However, I did notice that the water tasted and flowed like brake fluid, so I'm not sure if that's the case.
I'll view it from the opposite angle...
Edit: The opposite side is extremely dry, so the calliper is definitely to blame.
I'll view it from the opposite angle...
Edit: The opposite side is extremely dry, so the calliper is definitely to blame.
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DJWilliams77
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DJWilliams77
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OriginalMark
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Additionally, a spongy sensation could be caused by air entering the system if fluid is being expelled.
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DJWilliams77
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I see your point.
Based on Mr. Mcginty's expertise and the fact that the opposite side is completely dry, I've concluded that it must be water.
It can't get any worse than this, so I'll just install the new Calliper (which I ordered) and see how things work. It should arrive on Thursday.
Sincerely, Mr. Mcginty, I am much obliged; I had been researching master cylinders and other options, but you may have spared me a great deal of time.
D-Dad, you deserve credit for turning it into a thread to attract attention.
Once the calliper is installed, I will return to verify if it has been fixed.
I appreciate it very much.
Based on Mr. Mcginty's expertise and the fact that the opposite side is completely dry, I've concluded that it must be water.
It can't get any worse than this, so I'll just install the new Calliper (which I ordered) and see how things work. It should arrive on Thursday.
Sincerely, Mr. Mcginty, I am much obliged; I had been researching master cylinders and other options, but you may have spared me a great deal of time.
D-Dad, you deserve credit for turning it into a thread to attract attention.
Once the calliper is installed, I will return to verify if it has been fixed.
I appreciate it very much.