Skip the auto shop - Our mechanics make house calls

Q: I replaced the IAC and EGRVCS - the idle eventually worsens and dies

asked by on

replaced IAC and EGR Vac Control solenoid. At start idle lopes a little bit acceleration is fine. As it warms idle becomes more irradic and eventually will die as it did with a bad IAC you cant even drive it. I have checked for vac leaks that is fine. is there an idle relearn for this year unable to find anything and you cant just disconnect the battery doesnt work.

My car has 197500 miles.
My car has an automatic transmission.

Hi there. You will need to check the mass air flow (MAF) sensor for if it is plugged in and dirty. If there is nothing wrong with the MAF, I recommend replacing it for the symptoms that you are encountering are the same as if the MAF sensor is not working correctly. If there is an engine light, get the codes and refer to an online publication to see what the codes are referring too. If you need further assistance diagnosing your vehicle, then seek out a professional, such as one from YourMechanic, to help you with the loping idle issue.

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. I replaced the IAC and EGRVCS - the idle eventually worsens and dies

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: Got told I needed I new head gasket but my car doesn't over heat or smokes obut needs o2 sensors... Any suggestion?

Hello, thank you for writing in. Without knowing the symptoms the vehicle is having, it is difficult to say what the issue may be. If you are receiving a code from the computer related to the oxygen sensors, then the...

Q: Oil dipstick is stuck

The oil dipstick has small rivets in it toward the bottom which can sometimes make it difficult to get out depending on the angle or curvature of the oil dipstick tube that leads down to the oil pan. Sometimes wiggling...

Q: EGR Valve and Airbag lights are on

Hello. It sounds like you have two different issues with your car. Most of the time, if the EGR valve is failing and setting codes it needs to be replaced. It is common for the EGR valve to fail or...

Related articles

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...
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...
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.