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.

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
  • Home
  • Questions
  • engine will start and idle but when I depress the accelerator it bogs out

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: Possible braking issue.

Your vehicle is new enough that there should be a manufacturer warranty so do avail yourself of that protection. If you believe the brakes have actuated, or are sticking, in one of these episodes, simply pull over and measure (or...

Q: Engine swap!

The main problem in such a swap is the engine computers for the two engines you are referring to are not interchangeable. And, you cannot flash re-program your existing computer to work with the new engine because the two use...

Q: Got hit by the gas tank on a 2000 nissan maxima now axel looks bent. What else might be broken

Hello, thank you for writing in. In the area of the fuel tank and axle, there are likely fuel and brake lines to be concerned about. This is in addition to the components related to the wheel, axle, and fuel...

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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.