Knocking sound from Transmission

yellowstang99 · 10-31-2007, 07:48 PM

So, a week or two ago I get a knocking sound coming from my car. I'm thinking oh crap, the motor is going on me, but noticed it sounded like it was coming from the transmission. Pressed the clutch in, the knocking stopped. Buddy of mine who owns a performance shop said I need a new clutch kit. So, bought a new king cobra clutch kit (clutch, pressure plate, T/O bearing), had him put it in. Just noticed the knocking is back again after getting the car back today. The sound again goes away when the clutch pedal is pressed in. Any ideas on what this could be?

96gtstang · 10-31-2007, 08:22 PM

does it knock constantly or just when you push the gas pedal down? does the stick jump around more than normal while makin the knock sound? might just be a bad tranny mount

yellowstang99 · 10-31-2007, 08:41 PM

sounds like a rock rattling around inside the trans. Only does it idle with the car in neutral. Goes away when I press the clutch in. I have a new tranny mount so it shouldn't be that.

10-31-2007, 07:48 PM	#1 (permalink)
yellowstang99 35th Anniversary GT Join Date: Feb 2006 Location: Evansville, IN Posts: 422	Knocking sound from Transmission So, a week or two ago I get a knocking sound coming from my car. I'm thinking oh crap, the motor is going on me, but noticed it sounded like it was coming from the transmission. Pressed the clutch in, the knocking stopped. Buddy of mine who owns a performance shop said I need a new clutch kit. So, bought a new king cobra clutch kit (clutch, pressure plate, T/O bearing), had him put it in. Just noticed the knocking is back again after getting the car back today. The sound again goes away when the clutch pedal is pressed in. Any ideas on what this could be? __________________

10-31-2007, 08:41 PM	#3 (permalink)
yellowstang99 35th Anniversary GT Join Date: Feb 2006 Location: Evansville, IN Posts: 422	sounds like a rock rattling around inside the trans. Only does it idle with the car in neutral. Goes away when I press the clutch in. I have a new tranny mount so it shouldn't be that. __________________

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10-31-2007, 08:22 PM	#2 (permalink)
96gtstang Senior Member Join Date: Mar 2006 Location: cleveland, ohio Posts: 460	does it knock constantly or just when you push the gas pedal down? does the stick jump around more than normal while makin the knock sound? might just be a bad tranny mount