Skip the auto shop - Our mechanics make house calls

Q: Car cut off when braking or slowing down

asked by on

My car is currently not starting. Before, when the car was driven, and as long as I pressed on the gas pedal, the car went fine. But when I braked or slowed down, the car cut off and would take a few minutes to restart.

Your symptoms sound very similar to problems with air metering or fuel delivery. The idle air control valve regulates air flow while the throttle plate is closed. If this is blocked, the engine can choke. The ports can be blocked by carbon build-up, or the control valve itself may be experiencing a failure. Have a trained mechanic, like the ones at YouMechanic, determine the source and cause of this stalling issue, and recommend the best path to repair.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Car won't pick up speed

A number of things could be causing this issue. Some possible problem parts would include throttle cables, computers, fuel or ignition issues, or even something as simple as a sensor. My best recommendation would be to have your vehicle thoroughly...

Q: After i installed new front brakes, they started squeaking..............whats the problem?

Hi there, thanks for writing in. I'll be glad to help you with your question about brake noise on your 2005 Montana. Shims and high temperature grease must be used in this application, otherwise noise may occur. It is also...

Q: My truck is not starting

It's possible the ignition switch has failed. Confirm that the engine immobilizer system (security system) is not activated prior to the diagnostic. If you have a good battery and the starter motor is turning the engine over rapidly, at sufficient...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...