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The most likely cause is the vacuum pump has failed.
press the brake pedal a few times with the engine off
keep your foot on the pedal and start the car
your foot should drop slightly
if it does not either the vacuum pump or the servo itself is faulty.
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∙ 8y ago
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Do you tell if you need to bleed the brakes?
Spongy brake pedal that can be pumped up to more solid pedal Brake fluid system has been opened for repair or part replacement Spongy brake pedal that can be pumped up to more solid pedal Brake fluid system has been opened for repair or part replacement
Peugeot 405 diesel failed the mot test because the brake pedal was solid you have changed the servo and the vacuum pump but it is still the same any help please?
I have exactly the same problem, when driving it is fine, just when the engine is at idle speed (stopped/verys slow) that it has an issue. did you get it sorted and what was it? thanks
Why does my Brake pedal pulse at low speeds?
This sort of thing is usually caused by brake rotor thickness variation or out-of plane condition. Other possible causes are ovaled brake drums, bent hubs, bent (solid) axles, improperly seated brake rotor or drum.
Why does the brake pedal seem very soft even though brakes work?
asuming the brakes are fine. what we have is servo assistance all cars have brake servo's these unit's aid the driver to operate the brakes because with out servo assistance you could not stop the car on your own. how ever if you must check your brakes turn the car off now pump the brake pedal after 3 or 4 maybe 5 pumps of the pedal it should become solid if it not then get them looked at. but lets say they are now with the pedal feeling solid hold the pedal down as hard as you can now start the car now as you start the car the pedal should go down pretty much all the way down this is the servo kicking in which is great but if the pedal does not go down the servo needs looking at. and this goes for all cars .
After a short distance 1990 Jaguar XJS brakes slowly apply until the wheels are solidly locked The brake pedal is solid After 30 minutes they are fully released again What is the problem?
overheating
Is diesel a solid liquid or gas?
diesel is a liquid fuel at the gas pumps.
Is diesel solid liquid or gas?
Diesel fuel is not a solid or gas, but rather a liquid. It is a common fuel source for large industrial equipment.
How to bleed brake lines 99 silverado?
The most common way to bleed brakes yourself is as follows. Get someone to help you. Make sure master cylinder is full of brake fluid, make sure all bleeder screws are closed, have a friend push the brake pedal about 5 times to build pressure and get them to hold the pedal down. While they hold the pedal down, you open bleeder screw and fluid should squirt out. close bleeder before your buddy lets off the pedal or else air will suck back in lines. repeat until a solid stream of fluid is present. you shouldn't hear or see any air bubbles coming out. if you do, continue until air gone.
What would make a Nubira not shift out of park even with brake depressed?
The brake light switch on top of the brake pedal. to temp. fix this if you are stuck some place.on the right side of shifter at the base of the console is a slot. find something solid that will fit down in side and there is a button to push down. as you push the button, depress shifter button and the shifter will release out of park.
How do you let the air out of the brake system?
If it has abs then that requires specific instructions. If it does not have abs the open the right rear bleeder first and have someone gently push the pedal down have step when you crack it open. Close it quickly before the pedal is released. Do this until you get a steady stream. Repeat this for the left rear then the right front then the left front. After all 4 then then repeat all bleeders one more time each. If you get steady stream from all four then your pedal should be solid. Don't forget to keep brake reservoir full of fluid during this procedure.
How do you bleed the lines on a Benz 300sd?
I assume you are trying to bleed the brake system, not the diesel injection system. Manually bleeding with two people is a simple procedure: WARNING: Never release the brake pedal when a bleeder valve is open !!! Fill the master cylinder reservoir to the top. There are two reservoir chambers, the rear is difficult to see and easy to empty out by accident. #1. With all the bleeders closed, have your helper pump the pedal three or four times then hold down the pedal. #2. Open the selected bleeder that's furthest from the master cylinder (Right rear on left hand drive cars). #3. Close the bleeder when the flow stops. #4. Have your helper release the brake pedal. #5. Repeat until solid clean fluid comes out, no air. #6. Re-fill the master cylinder reservoir to the top. #7. Repeat at the left rear, then the right front, and finally the left front. Make absolutely sure the reservoirs are full during this whole procedure, or you'll be starting over. Some 300SD have ABS and may require a brake pressure bleeder to flush all air from the system.
Can anyone suggest a 2013 diesel car?
Volkswagon has been a constant and solid provider for diesel vehicles for decades. But for a comprehensive comparison of diesel vehicles check out Edmunds (www.edmunds.com).
