transmission thump? Options

[soven]

Anyone notice or know what this is? It is a minor thump as though a shaft has just engaged right under the center of the car when they are for example, cruising on the motorway and then getting off the gas completely. When you get back on the gas, there will be a slight thump sound as though something just engaged...

This is for an automatic

*edit

Just changed front and rear engine mount. The clunk is still there.

Diagnosis:
Single thump when I lift off gas completely while vehicle is moving and then accelerate harder than usual.
Does not happen if i step on the gas slowly at first and then accelerate hard
Rev-ing engine in Neutral does not produce the thump
While stationary, Handbrake on and stepping on brakes and I shift from Neutral to Drive. I can see the transmission/engine move and also a sound can be heard coming from the transmission area.

Any input? Would the mount under the airbox be the culprit? Transmission fluid is a healthy red colour and at correct levels. Axles? Any other thing I can do to rule out potential problems?





This post has been edited by soven: Jul 19, 2007 - 5:42 AM

[SlowCelica94]

It's likely a mount. But also check your fuild level (hot while the engine idels, or whatever it says on the dipstick) and inspect the tranny and it's associated lines for leaks.