The 4 speed auto again...

[Swedishmoose]

Hi folks...


I need some help....spooky noises from our Falcon Futura (year 2000, 150000 km on the clock)

It is hard to find a specific answer with the search function but I couldn't find anything so I gave up after an hour.

When I put the auto in reverse and roll out of the garage onto our sloping driveway (left rear spring is pushed together , right rear spring is pulled apart = tilted rear axle) I can hear a knocking noise coming from the transmission. It is a noise with a frequence (something rotating is knocking onto something) and it disappears when I put it in neutral.
When I put it back in gear (reverse) it appears again but then slowly fades out after 20-30 seconds.

Could it be because of the twist in the drivetrain when I roll out of the garage ?
It has done it twice within two weeks now and never before.

It sounds like the ticking noise of a faulty valve hydraulic lifter from the engine with the only difference that it is a knocking noise instead of a ticking noise

If it was something in the engine (crankshaft, camshaft), it would still do it once I put the auto in neutral.


Thanks for any ideas...

The Moose