Loud Knock Sound During Accel

[Lappin]

Hey guys, got a small worry about the camaro, for some reason (just started yesterday) when I give'er from a dead stop there is a loud bang/knock that sounds like It is coming from right bellow the gear selector (engine, tranny, driveshaft???) there is no (or at least I cant see any) difference in performane and other then that still drives smooth, any ideas on what could be causeing this?

[ryan34]

Sounds like the tranny mount. If it is, just replace it. It isnt too hard to do, you should be able to do it your self with basic tools. My camaro had the same problem.

[Kevin - Blown 95 TA]

Hopefully just a broken tranny mount. In that case, no biggie

[Lappin]

Anybody know how much roughly a new one would cost?

[Kevin - Blown 95 TA]

Maybe around $20-$25 or so.

[TraceZ]

Hopefully just a broken tranny mount. In that case, no biggie

I agree. Very common on F-bodies to fail. You can try ordering the optional 1LE mount from GM. It is more durable than the stocker without any noticable added harshness or vibration.

[Johnyd2]

trans mount..... easy repair, no more than 30 bucks, 2 jacks, and about an hours worth of time...

[Lappin]

Turns out it was an engine mount, found out cuss i noticed if I reverd her a bit the whole car would drop to the right abit when I gased it, then I got a friend to wacth the motor as a did a bit of a breakstand and sure enough the engine jumps up to the right side, Iam pretty sure that means its the engine mount, unless the tranny mount would cause this to? Iam not completly sure, sucks being a rookie

[TraceZ]

Turns out it was an engine mount, found out cuss i noticed if I reverd her a bit the whole car would drop to the right abit when I gased it, then I got a friend to wacth the motor as a did a bit of a breakstand and sure enough the engine jumps up to the right side, Iam pretty sure that means its the engine mount, unless the tranny mount would cause this to? Iam not completly sure, sucks being a rookie

Dude... listen to us. It is the Transmission Mount.

Why even fool around? It is a $25 part that can be replaced in under 30 minutes.

[Mark B]

A bad trans mount will definitly make the engine move more.

[Lappin]

Alright, I trust you guys, iam gonna run to autostore near my house first thing tommorow and grab a tranny mount hopefully get it in during tech class, thanks alot!

[ryan34]

Dude... listen to us. It is the Transmission Mount.

Why even fool around? It is a $25 part that can be replaced in under 30 minutes.

Hey trace, i thought that if the engine moved north and south it was the tranny mount, but if it was an east to west movement, then it was a motor mount. I could be wrong though

[fastTa]

Hey trace, i thought that if the engine moved north and south it was the tranny mount, but if it was an east to west movement, then it was a motor mount. I could be wrong though

Would that depend which direction your car was facing?

The force pushing back against the torque of the motor will always want to move the motor sideways to the passenger side of the car. This pushes down on the passenger motor mount and pulls up on the driver's side mount.

The trans mount is usually what causes the "thump".

[ryan34]

Would that depend which direction your car was facing?

The force pushing back against the torque of the motor will always want to move the motor sideways to the passenger side of the car. This pushes down on the passenger motor mount and pulls up on the driver's side mount.

The trans mount is usually what causes the "thump".

Aaaahhh, i didn't know the motor mounts didn't cause thumping. Learn something everyday i suppose.

[FroSSty]

The problem is that sometimes when your tranny mount goes, it is telling you that your motor mounts might be bad...I just replaced my tranny mount and it only took a couple of months to break that one. The only other thing, other than a defective new tranny mount, is that the motor mounts are weak.