Skip the auto shop - Our mechanics make house calls

Q: The car will start fine may run for 20 miles then shut down stopping at a light, but will restart.

asked by on

When starting my car, it will start with no problem. I will drive the car maybe 14 miles or I can drive 42 miles, then all of a sudden it will shut down when slowing down for a light or going around a curve. The car will restart when you put it in neutral, but today it was harder to get the car restarted had to let the car set for about five minutes to get it restarted. There are no codes at this time but the last time it shut down it gave me a po122 code which is TPS BREAKE DOWN. Now the question is can this be the trouble.

My car has 233458 miles.

A: The code listed usually points to a malfunc...

The code listed usually points to a malfunction in the throttle position sensor circuit. It makes sense the vehicle will shut down as the vehicle cannot operate safely if the control system cannot properly calculate the correct throttle position. As a safety protocol, the vehicle shuts down to prevent the possibility of a wide open throttle situation where the driver has not commanded a wide open throttle which can be very dangerous. Hire an experienced automotive technician like the ones here at YourMechanic to come by and perform a diagnostic check on your stalling issue to get down to the bottom of the problem.

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・Save up to 30%

Get a quote

What others are asking

Q: Front AC not blowing cold air

Hi there. Lack of cold air is a common issue for vehicle's to encounter when it comes to the AC. This lack of cold air is due to low refrigerant level in the AC system. An AC recharge would solve...

Q: Transmission slips

The transmission may be slipping internally from a bad clutch servo or it has an internal seal leak. Have the transmission tested for proper pressures to see if it is a solenoid issue or the seals are leaking causing it...

Q: My 2003 Town Car is showing that the 8th cylinder is misfiring. Do I have to replace the ignition coil as a result?

Hi, thanks for writing in. A misfire code only says the cylinder is not contributing to power in the motor. You may have no or low compression, a bad coil, injector problems, or a plug problem. Have the coil removed...

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...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...