Skip the auto shop - Our mechanics make house calls

Q: Car is stalling when giving too much gas. Won't start.

asked by on

My car will start 1/10 times. When it does start it idles fine and runs smoothly. I can give it gas slowly but when i give it more gas at a faster pace it will stall and not start again. Ive replaced the fuel filter, spark plugs and spark plug wires, and the knock sensor as well. I really need help.

My car has 200000 miles.
My car has an automatic transmission.

A: This may be a sign of a failing throttle po...

This may be a sign of a failing throttle position sensor. The throttle position sensor (TPS) is a sensor used to monitor the throttle position of the throttle plate inside the throttle body in relation to your foot position on the gas pedal. Based upon the inputs from the sensor reading your foot’s position on the pedal, the ECU then makes the direction to supply more or less fuel to the motor. When this sensor is not working properly, this can cause intermittent responses when pressing the gas pedal. If you’d like to get this fixed, I would suggest having a professional from YourMechanic come to your home to diagnose your issue and service your throttle control system as necessary.

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

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: Keys quit working

Hello, and thank you for writing in. Without doing some diagnostic testing it is impossible to know if this is a fuel, spark, or other electrical issue. Once the issue is determined, you can then get quotes on a repair....

Q: P2101 TAC motor circuit range/performance

All of your codes are relevant to the throttle position sensors except the P0420 which is a catalyst efficiency code. It looks like you have a problem with the accelerator position sensor. The accelerator sensor and the throttle motor have...

Q: Car overheated and now it's shutting off. It cranks but won't start.

Hi there. If the coolant leaks out too much, the computer will see this from the coolant temperature and coolant level sensors and shut off the engine to prevent any damage to the engine. Check for the coolant leaks and...

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...
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.