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

asked by on November 09, 2016

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.

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?
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

is it safe to change Transmission Fluid. Hasn't been changed in a long time. Currently the Transmission is working fine; no slip

I agree with the other mechanic. If the fluid looks dirty then this means the transmission was not serviced for a long time and if you service it then the new fluid will wash out all the clutch material that...

Car stalls and needs servicing.

I did a thorough investigation on this car model and there doesn't seem to be any explicit problems with this particular model. It could be that there is a possible purge valve problem after fuel tank refilling could cause liquid...

The oil looks like sludge would that stop the car from starting

Although dirty or contaminated oil can cause problems (with variable valve timing mechanisms for instance), dirty oil generally won't prevent a car from starting. "Bad" or old gasoline could prevent a car from starting though. If the engine cranks at...

Related articles

How Can You Tell That Your Fuel Pump Isn’t Working?
The The fuel pump is responsible for getting fuel out of the gas tank and up to the engine. The pump itself is usually located inside the gas tank. There are a handful of symptoms to look out for that...
The Best Used Cars to Buy If You Live in a Windy Area
If If you live in a windy area, one of the most important things you’re going to be looking for in a used vehicle is the ability to remain stable on the road on even the most blustery days. That...
How Does Fuel Injection Work?
When When it comes to engine performance, there are few things more important than fuel delivery. All of the air you can forcefully induce into the cylinders will do nothing without an appropriate amount of fuel to burn. As engines...