Skip the auto shop - Our mechanics make house calls

Q: Replaced idle control and throttle sensor now won't idle and service engine light on

asked by on

Replaced idle control and throttle sensor now won't idle and service engine light on

My car has 86000 miles.
My car has an automatic transmission.

Hi there. Check to see if the idle control and throttle position sensor was for your vehicle. Some sensors are universal and can be used on many different vehicles. Check around the sensors to ensure that they are connected. Check to see if you have had to remove something to get the sensors off and see if those parts are reconnected properly.

If the sensors are working properly and nothing is disconnected, then check the spark plugs and plug wires for any corrosion and burned spots. If you need further assistance diagnosing your vehicle, then seek out a professional, such as one from YourMechanic, to inspect the idling problem and pinpoint the needed repair.

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

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. Replaced idle control and throttle sensor now won't idle and service engine light on

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: When bleeding coolant system do I re tighten the bleeder valve bolt tight?

Hi there. Yes, to correctly bleed the cooling system on the Dodge Dakota or any newer (post 1990) vehicle, you want to close the bleed valve tight before beginning the process. This video is a good one to follow on...

Q: Door ajar warning and globe light stays on when all doors are shut and car is running 2003 Ford Explorer

This vehicle has a computer system to scan to get the door data to show what door is showing open. Any one of the doors may be causing the issue. The most common is the drivers door ajar switch since...

Q: How to set the idle

Hello there, thank you for asking about your 1986 Ford V8-5.0L. The throttle body and idle air control valve should be cleaned first. The idle is not adjustable on this vehicle but the throttle stop on the throttle body can...

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...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...