when in low gears at very low speed say below 20, the car jerks and only goes away when you fully press in the clutch pedal. there is a very ugly annoying clunking noise coming from the rear end, others have driven it and told me the same thing. one very trustworthy source told me it was universals loode in my fiff and my step father who works for ford told me it was not the diff that is was something to do with the suspension that was a common fault with the au's. any ideas? i have to figure this out because its under warranty and ford have to front the cost to fix it and frankly they dont want to, i'm unfortunatly dealing with a very unhelpful ford dealership. any help greatly appreciated

Sounds like the rear IRS top strut mounts.

1st saw this thread title and I thought t2te50 suspended

is this a common au problem?

Yes only with the IRS rear ends.