Just out of curiosity, what is the cause of the "ticking" sound that comes from under the hood when the key is turned to the ACC position (or when the car is running)? If I pop the hood and touch different parts near the throttle body, I can FEEL the ticking. It ticks about twice every three seconds. I did a search but wasn't sure what to search for, so I didn't come up with any answers. Hopefully this is supposed to happen and isn't related to my ECU code (0401 - air temperature sensor)!!


Thanks,

Doug

 

IAC Valve Stepper Motor is what your hearing.

It's normal.

 

Thank you! I just started to get under the hood more often, hoping to learn some stuff... probably why I never noticed it before