Q: Idling while driving

asked by on

I recently got some service did. The issue was that my car would idle up when I'm drive it would hesitate going up a hill. So I got it checked and they said I should replace my catalytic converter, map sensor, and thermostat and also advised on a throttle body cleaning to stop it from idling when I drive after all the service it still idles up while driving what can I do

My car has 344125 miles.
My car has an automatic transmission.

The main issue you have here is the number of miles on your car. With this many miles, most cars would have been completely worn out. Unless you have taken meticulous car of your car, it is often necessary to start with the obvious problems. I suspect this is what has happened here. The MAP sensor, thermostat, and a throttle body cleaning are a good beginning to fix your car, but there are bound to numerous other issues. The catalytic converter is an emissions component that in most cases won’t cause drivabilty issues.

Keep in mind, doing what they have suggested is a good beginning. Your car has a lot of miles and is likely to have several more issues. You are always entitled to a second or third opinion, but keep in mind, the shop is entitled to the time already spent on your car. If you want another opinion, I recommend having your cars driving symptoms diagnosed by a qualified technician, such as one from YourMechanic.

Good luck!

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Idling while driving

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: MAP sensor.

No. The MAP sensor is more than a sensor inside the case, as it contains circuitry that may alter the output voltage as specified by manufacturer needs. If you need help getting the correct part, YourMechanic can source and replace...

Q: After filling my car w/gas, my car won't start

You will need to have the fuel tank smoke tested to see what is causing the fuel vapors to be getting into the engine when you are filling the tank with fuel. You may have a stuck fuel tank vent...

Q: i don't know when the last time the transmission fluid was changed

Minor and intermittent transmission issues can be related to a lack of fluid maintenence. Major issues would not be the case. I think you have a fairly minor issue. Considering that the transmission fluid is a basic maintenence item that...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.