Skip the auto shop - Our mechanics make house calls

Q: engine will start and idle but when I depress the accelerator it bogs out

asked by on

engine will start and idle but when I start going down the road I depress the gas pedal all the way and it will bog out. I can press it very lightly and it will accelerate just fine. I've changed the plugs and wires, upstream o2 sensor and the throttle position sensor, cleaned the IAC sensor/valve and disconnected the exhaust pipes fom the exhaust manifold to test if it was a plugged CAT. It feels starved of air or fuel but exhaust smells rich.

My car has 182000 miles.
My car has an automatic transmission.

A: It sounds like you have replaced the majori...

It sounds like you have replaced the majority of the main components that would normally otherwise cause this kin of symptom. You may want to also check the mass airflow sensor which can also cause this same type of problem. If you need a professional to help diagnose this for you, a certified technician from YourMechanic can come to your home or office to diagnose the stalling problem and perform the repairs that are needed.

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: Question about wheel size

You want a wheel that has the same offset, backspacing, and width as your existing wheels in order to avoid handling problems. If you had OEM wheels, I could tell you the offset but inasmuch as you have aftermarket wheels,...

Q: Squeaking belts

The power steering pump belt is not turning and can be the cause for the loss of steering. The water pump may be seized causing the overheating problem. I recommend having a mechanic, such as one from YourMechanic, check the...

Q: My car will not idle at a stop light.

This may be a sign of a failing throttle position sensor or a failing or dirty idle air control valve. The throttle position sensor (TPS) is a sensor used to monitor the throttle position of the throttle plate inside the...

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...
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...
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.