I have a 1992 Ford Tempo that exhibits a loud and funny sound when I shut off the 3.0L 6 cyl. engine. The sound is similar to a trumpet note. Yes, a short trumpet note!
I have have narrowed down the source of the noise to an orifice hole inside the throttle body, just in front of the throttle valve. It has a great deal of air being sucked through the hole at all times. If I completely cover the orfice, the engine stalls and dies. If I keep my finger nearby, I can "feel" the loud note being played from that orifice when the engine is turned off.
Not suprisingly, the engine idles poorly. I have cleaned the throttle body with spray, and I still have the same symptoms. Does anyone know what is the cause of this poor idling and "noise" at shutdown from this orfice? What is the orfice in front of the throttle plate?
Thanks in advance.
I have have narrowed down the source of the noise to an orifice hole inside the throttle body, just in front of the throttle valve. It has a great deal of air being sucked through the hole at all times. If I completely cover the orfice, the engine stalls and dies. If I keep my finger nearby, I can "feel" the loud note being played from that orifice when the engine is turned off.
Not suprisingly, the engine idles poorly. I have cleaned the throttle body with spray, and I still have the same symptoms. Does anyone know what is the cause of this poor idling and "noise" at shutdown from this orfice? What is the orfice in front of the throttle plate?
Thanks in advance.
Apr 4, 2008 at 10:09 AM