Skip the auto shop - Our mechanics make house calls

Q: After changing radiator and oil, car stalls when coming to stop. Is the motor damaged?

asked by on

Every time I come to stop the car stalling . This is happening 1 day after radiator changed because cracked- car was reheat . What can be the problem now, or damage?

My car has 138 miles.
My car has an automatic transmission.

A: Hello. Stalling can be caused by many thing...

Hello. Stalling can be caused by many things. If the engine is no longer overheating, then it is unlikely that the stalling is directly related to the radiator repair. A few common causes for stalling when braking are a faulty idle air control valve or vacuum leaks. The idle air control valve is the component responsible for maintaining and adjusting the engine’s idle speed.

If the valve fails or malfunctions, it can cause idle issues and stalling. The same for a vacuum leak. A vacuum leak, if large enough, can cause stalling. Another thing to check, if the issue appears to be brake related, is the brake booster, as this component is vacuum-operated and can also leak. It may also be possible that a hose or tube came loose, if any of the intake tubes, or vacuum hoses had to be removed when replacing the radiator. I would start by checking the engine for vacuum leaks and then looking at the idle air control valve.

If you need assistance, then I recommend having a certified mechanic, such as one from YourMechanic, come to your location to determine why the car is stalling and suggest any necessary repairs.

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: Dashboard warning sign ?

It would be easier to determine what the warning light is on your dash if you were to include a description. I am unfamiliar with arming sensors. As for these sensors, whatever their purpose is, you might try looking in...

Q: Car stalls, but the problem can not be found

Hi there, thanks for writing in about your 2015 Volvo XC60. Intermittent concerns are by far the most difficult to diagnose. Clogged fuel filters often cause similar performance problems as well as poor signals from failing throttle position or engine...

Q: speedometer not working

The vehicle would need to be lifted and the cable checked to see if it is turning. If it is, then the speedometer is bad. If the cable does not turn, then disconnect it from the transmission and see if...

Related articles

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...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.