Skip the auto shop - Our mechanics make house calls

Q: There is a strange slip in the engine

asked by on

if I press the gas pedal aggressively when starting or while driving there is NO issue. The "slip" occurs when I push the gas pedal slightly, particularly when traveling 20 to 50mph. Example: driving on highway. Traveling 55mph, if I put minimal pressure on gas pedal, the slip will occur. If I accelerate by pushing it down harder, no slip occurs. The slip feels like the car wants to go, but it "drops several times quickly or" doesn't respond well. Then if I push hard, it takes off fine. HELP

My car has 199000 miles.

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 a vehicle. The sensor is usually located on the butterfly spindle/shaft so that it can directly monitor the position of the throttle.

This sensor relays the position of the throttle plate (also called the butterfly) relative to your foot’s position on the gas pedal and associates the two in the ECU. The ECU then allows for a supply of more or less fuel to the motor. When this sensor is not working properly, this can cause intermittent responses when pressing the gas pedal.

I would suggest having a professional mechanic, such as one from Your Mechanic, perform a diagnosis and replace the throttle position sensor if 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: I hear a growling sound coming from the front driver side. I believe it's the bearing. Should I consider repacking or replacing?

Hello, the noise you hear could be a front hub bearing. The hub bearing is serviced as a complete unit assembly. If you'd like, a certified Your Mechanic Technician can come to your location to inspect this noise. Please look...

Q: Mustang squeaking and squealing

Hi there. If the noise is occurring when operating the clutch, then it may be in the clutch itself. If there is slipping, then the clutch itself is bad. If the noise only occurs when pressing in the clutch, then...

Q: Ticking noise when at idle and louder while accelerating

The noise may be the lifters, but the problem may not be the lifters. Your engine's heads have very small passages that feed oil to them through the heads, and, if the parts are being starved of oil, then the...

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...
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...
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...