Q: Replaced IAC valve. Now when I start the car it idles around 1500 rpm in park and neutral. Runs great while in drive and idles at

asked by on

2003 dodge neon replaced the iac valve. Now at start up it idles at 1500 rpm in park and neutral. In drive idles at 1,000 as normal. Could this be the throttle position sensor?

My car has 124576 miles.
My car has an automatic transmission.

After the IAC valve is replaced you will need to relearn the engine idle again. Disconnect the battery for a couple minutes and then restart the vehicle and warm the engine at 1500 rpm and then let idle for two minutes and then put in gear with no accessories on and idle two minutes and then put a/c on and put blower on medium speed and let idle two minutes. The engine idle should be relearned now.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Replaced IAC valve. Now when I start the car it idles around 1500 rpm in park and neutral. Runs great while in drive and idles at

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 braking hard vehicle pulls to left and all brakes are slow to release

Hi there. In most cases, when the car pulls to one side due to braking, it's caused by a malfunction of the caliper, a warped brake rotor or brake pressure being too high on one side. I can also be...

Q: Idling very rough after I bought the vehicle.

Hi there. First check for any vacuum leaks. A small vacuum leak will cause the engine to raise up in throttle, but a large vacuum leak will cause an engine to stumble. Check the fuel injectors and see if they...

Q: Car shift gear is stiff

Hi there. A car that refuses to shift or go into gear easily is trying to tell you something is wrong and in most cases the culprit is the shifting linkage or the automatic transmission. Transmissions are very complicated and...

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...
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...
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.