Q: Problem of irregular idle anytime I apply the brakes, it quits Peugeot 307

asked by on December 28, 2016

My car is a peugeot,the engine revolution is not regular,it's being interrupted anytime i apply break.what can be the cause?
My car has a manual transmission.

Hi - from your description of symptoms, it sounds like the brake booster has an air leak, or possibly the hose to the brake booster has a leak. The brake booster uses engine vacuum for braking assist. If the booster diaphragm is damaged, air leaks into the engine air intake in an unmetered way, making the engine run lean. This causes the rough running and stalling you describe. Replace the brake booster or the hose depending on which is leaking.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

What others are asking

Car making squeaking and growling noise from under the hood by alternator

The shaking and stalling out as you describe can be caused by a variety of issues. When this happens there is likely a Check Engine Light on that should register a fault code in the car's computer. I would recommend...

My brake pedal goes straight to the floor when I press down to brake and my car take a second longer to stop

You should first look in the master cylinder reservoir to see if there is fluid in it. If the fluid is low or gone then you will need to fill the brake fluid. After the fluid is filled then have...

My brakes are messed up

The noise is coming from your brake booster has a vacuum leak and will need to be replaced. This is why your engine runs rough when you press the brakes.

Hissing and squealing when releasing brake pedal

That is the sound that the brake boosters will make as the seals for the diaphragm are worn out. I would recommend having a certified technician come out and determine if that is in fact the problem you're having and...

Brake pedal is going to the floor. Ive changed master cylinder and bled system. No help.

Hi there. Knowing the year, make, and model usually helps us with providing helpful advice. However, I believe I may be of help here. Confirm there are no other brake fluid leaks. Check the caliper slide pins if this model...

Car jerking forward after brake pedal release.

The rear brakes on this car are drum brakes and they may be binding due to the rear wheel brake cylinders binding or the springs are weak and do not return the brakes quick enough. The brakes should be inspected...

Brake booster replacement for 2005 Volkswagen Phaeton.

Hi there. You will have to remove the master cylinder and all of the engine components that are in the way of the brake booster. Then the bolts on the inside of the cab will need to be removed to...

Brake pedal going all the way to the floor.

The pedal going down to the floor usually indicates a loss of hydraulic pressure. Possible causes include a leaking brake hose, a dysfunctional caliper, or a wheel cylinder. Also a master cylinder leaking either externally or internally will cause the...

There's no pressure in my brake pedal

If you had multiple components of the brake system replaced and have already repaired leaking brake lines, then the next thing you need to do is verify that the brake master cylinder is full of fluid and stays full. Once...

Related articles

How to Replace a Hydro-Boost Brake Booster
Diesel engines require a brake booster that is different from vehicles with engine vacuum. The hydro-boost unit uses power steering fluid pressure.
Symptoms of a Bad or Failing Vacuum Brake Booster Check Valve
Common signs of a faulty vacuum brake booster check valve include the brake pedal being difficult to engage, feeling spongy, or not working at all.
How to Buy and Install a Booster Seat
Booster seats are important safety features for young children. When a child has outgrown their child restraint system, but is not yet big enough to safely fit the adult-sized lap and shoulder belts, it is time for them to use...