I am getting what I would described as a resonate noise from the IAC valve. At the same time, the IAC isn't controlling the idle speed well... it is unsteady, fast, and even died once. Anyone had this happen before? This is on my 97 GT.
At idle or light throttle conditions, the engine started making a loud hmming type noise. At first, I thought it was an idler pulley bearing making noise as it was about to die. After a while listening and wiggling parts, I narrowed it down to the IAC system. I pushed on the rubber hose between the intake and the IAC valve and the noise went silent... for about a minute. When I closed the hood and restarted the car, it started right back up.
The noise is clearly being generated in that hose between the IAC and intake, but WHY? Will a new IAC valve solve the problem.
I thought the IAC is a stepper type motor instead of a device that opens and closes quickly?
At idle or light throttle conditions, the engine started making a loud hmming type noise. At first, I thought it was an idler pulley bearing making noise as it was about to die. After a while listening and wiggling parts, I narrowed it down to the IAC system. I pushed on the rubber hose between the intake and the IAC valve and the noise went silent... for about a minute. When I closed the hood and restarted the car, it started right back up.
The noise is clearly being generated in that hose between the IAC and intake, but WHY? Will a new IAC valve solve the problem.
I thought the IAC is a stepper type motor instead of a device that opens and closes quickly?