Q: Can car jolting be caused by bad IAC valve?

asked by on

Can car jolting be caused by bad IAC valve?

Yes, if it’s bad it creates vacuum leaks, and when you get vacuum leaks, it gets wrong data to the computer and it gives the wrong amount of fuel to the engine. The air-fuel ratio is mixed and that can do all kinds of things. It’s very common.

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. Can car jolting be caused by bad IAC valve?

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: Car misfires then goes to limp mode.

When the vehicle goes into limp mode when the engine misfires, the computer is shutting down the electronics to the transmission to prevent damage to the catalytic converter as the fuel condition is either too lean or too rich. Check...

Q: What are the three hoses coming from air box on my Buick verano?

Hello, thank you for writing in. There are several vacuum lines associated with the engine intake and throttle. One of which that does run along up towards the firewall is the brake booster line. This vacuum helps assist the master...

Q: My truck runs for a few seconds then dies

When you have low fuel pressure but recently replaced the fuel pump and relay, the issue is typically vacuum-related or caused by a clogged or worn out fuel injector. The vacuum issue may be related the the EGR valve or...

Related articles

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...
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.
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.