Q: Brakes don't work very well when it's cold

asked by on

Whenever it is cold outside, I go to start the car and it's a bit slow to turn over. The engine revs high, too. My problem is that I'll pull out of the driveway, to the end of my street, and then I'll have very little braking power available. After coming to a an extremely slow stop, the brakes start to work. This only happens in the morning. What could this be?

You have two different issues here. The slow crank may be that the battery is getting weak. It may need to be replaced or the terminals cleaned. The other issue of the high idle and braking issue is probably due to a failing brake booster. You either have a vacuum leak in the brake booster or engine, or a bad brake booster check valve that leaks and will not hold vacuum. Have the battery tested and replaced, the brake booster check valve inspected, and engine or booster checked for a vacuum leak. A certified mechanic from YourMechanic can provide this inspection at your home or office.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Brakes don't work very well when it's cold

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

Get a quote

What others are asking

Q: The is the sound and feel of a "clunk" when putting the car into the drive gear and when coming to a complete stop.

The pop or clunk is the transmission shifting into first gear. If you look at this complaint on the Jeep Forums you will find many different opinions of what it may be and what fixed their vehicle. The first thing...

Q: Stalls and stutters only in the morning when I start it

As a general rule, car engines do not like cold weather and do not do operate as well in cold weather. When you start your car in the morning and turn the key to on, the coolant temperature sensor immediately...

Q: My Service Engine soon came on what does it mean ?

The service engine soon light is equivalent to a check engine light. Whenever there is a fault, from a bad engine sensor for example, a fault code is stored in the engine control unit, or ecu. When that happens, the...

Related articles

What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.