Grinding noise coming from tps area

[dsmcrzy4life]

With the key on and without the engine running, I hear a grinding noise coming from under the tps. Sounds like a crappy solenoid. Is this normal, if not what could it be?

 

[yokotabrat]

Could be the isc. It's on the bottom of the throttle body facing the battery. It has a 6 pin connector that goes to it. It moves slightly when you first turn the car on without starting it. It should stop after a few seconds, though. Try unplugging it to see if the noise goes away to verify its the isc.

 

[lgoss5127]

mine does the same thing. and its done it for a while now. i didnt really think anything of it and it hasnt done anything bad to my car

 

[dsmcrzy4life]

Yep its the IAC, the car starts hard when its cold and surges at idle sometimes too, so I'm going to test the pins tonight.