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.

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

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: Q: Only drives in reverse

Hi. Your transmission has an internal problem with either the valve body, shift solenoid, clutches or torque converter. The only way to fix this problem is to rebuild the transmission or replace it with a new one. Sometimes a transmission...

Q: Wont start after timing belt replacement

If you are getting fuel and compression, then you need to check to see if you have spark. If you do not have spark then test the ignition system or crankshaft sensor using a scan tool. If your engine was...

Q: Put wrong key in ignition and anti light start blinking car completely shut off - 2003 Lincoln Aviator

Hey there. You more than likely won't be able to bypass the system. You can try to disconnect the battery for 10-15 minutes to reset the computer. However, it still may not work this way. You will probably have to...

Related articles

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...
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...
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.