2004 Mazda 3 high and low idle

mazda
mazda3

#1

I’ve had a reoccurring issue with my idle control on my mazda 3. It has 65k miles. I already got the throttle body cleaned and still have seen some high idling, and mainly low idling. Any suggestions?


#2

Apparently you’ve got an electronic throttle system. Check the accelerator pedal position sensor, and if that’s ok, check the throttle actuator motor in the throttle body. If those all check out, idle variations can be caused by unmetered air leaking into the intake manifold, and from fuel-evap systems problems. Poor control of fuel pressure should be considered too, although less likely.


#3

Thanks, where is the throttle actuator in the throttle body?


#4

Don’t know for your particular car/engine. It’s usually a sort of box- or cylinder- shaped gadget attached to the throttle body itself. You know where the throttle body is located, right? You’ll probably have to secure the service data, or find the info by googling. That type of info is usually contained in a Haynes or Chilton’s manual. Or there may be a related u-tube video somebody’s posted.