Weird Knocking Noise

**JwMonE99** · 11-16-2007, 09:02 PM

I have a 96 Z28 M6.
I have a weird knocking noise coming in from underneath the dashboard. I know its not the motor becasue I cant hear it from underneath the hood. The only time I hear it is when my foot isnt on the gas pedal at all.
If I was just idling I can hear and if i just set my foot on the pedal without pushing it down the knocking stops.

**Rikki_SeVeN** · 11-17-2007, 08:56 AM

there's probably something loose up in there

**JwMonE99** · 11-17-2007, 09:28 AM

Is this a common thing?

**Rikki_SeVeN** · 11-17-2007, 09:30 AM

Originally Posted by JwMonE99

Is this a common thing?

it's a used car, you don't know what kinda hacking the old owner was capable of... so... just look around and underneath and all around... move things around till you find anything that might be loose

**camarojunky74** · 11-19-2007, 08:57 AM

sounds kinda funny but make sure all your air accessorys are alll off like the ac and the heater, turn the blower off and then see, if its still there i dunno

**JwMonE99** · 11-19-2007, 10:28 AM

Yea I tired it with everyone off, i got try it when its on too...

**camarojunky74** · 11-19-2007, 11:08 AM

just take it to a shop, you dunno this could be a big prob or a little one,. who knows

**02ultraZ** · 11-20-2007, 06:31 AM

Get a flashlight, stick your head up under the dash and while its making the noise randomly grab things under there and see what you touch that makes the noise stop. Take your time you're going to have to pinpoint it a little better. Also you said it's not the motor but it only does it when the car is running? Try turning the key to ON but don't start it and see if it makes the noise. If you put your foot on the pedal and it stops, it's gotta be something thats loose. Let us know how you make out.