Skip the auto shop - Our mechanics make house calls

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

asked by on

Can car jolting be caused by bad IAC valve?

A: Yes, if it's bad it creates vacuum leak...

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 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!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Car misfire

They do not need to be replaced and be in the same shape but it sometimes is recommended to replace all of the coils at the same time since they seem to start failing one after the other in a...

Q: Vacuum leak

Hi. This is a very common failure on vehicles like yours. So common, in fact, that there is a technical service bulletin (TSB) on it. The TSB is XT303-13 and it addressed the hissing sound from under the hood, as...

Q: I have a 2004 Hyundai Santa Fe with bent valves on both heads. I'm wondering if this is worth fixing?

Hello, thanks for writing in. I will try to help you with this. If the car has no other significant repair needs (i.e., costs), the calculation is fairly straightforward. If other repairs are required it is much more complicated. So,...

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 Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...