Skip the auto shop - Our mechanics make house calls

Q: Car stalls at a low speed

asked by on

The IAC valve is either dirty, or needs replacement. I have checked the air filter and cleaned the air sensor. The car stalls at a low speed/idle. This is a Zetec engine. I believe the IAC can only be accessed from under the car.

A: Hello. You can try and clean the IAC valve,...

Hello. You can try and clean the IAC valve, but if it is bad, it will need replacement. Cleaning the IAC valve would only be a temporary fix. The IAC valve is usually attached to the throttle body, and can be normally accessed from the top of the car. I suggest you have a complete diagnosis of the car done by a certified technician, like one from YourMechanic, who can determine the exact reason why your car is stalling.

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: Check Engine Light does not come on even though there are trouble codes present

The pink/light green wire in ECM pin 2 on the connector will ground the wire internally to the ECM to turn on the Check Engine Light. You could test the wire with the key on and it should have battery...

Q: My timing belt snapped about a year ago , car been sitting for about a year , just recently got the motivation to change the belt

Having the timing belt off by one tooth is enough to cause problems. I suggest having a certified technician, like one from YourMechanic, determine the exact cause of your starting issue and to make sure that you have no further...

Q: Coolant overflowing from reservoir cap

Coolant overflowing from a reservoir can be caused by many things, ranging from a problem a small problem such as replacing the cap, to a potential mechanical work, so I would recommend having the vehicle looked at by a knowledgable...

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...
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.