hi, has anybody come across this fault
my sapphire 4x4 cosworth, mainly when backing off & going down hill when car is trying to hold back, has a bad jerking sensation. how can i describe this better

feels like driving a car with the timing out or running out of fuel, has this fault in all gears, the lower the gear & the slower you go (especially between 20/40 the worse it is) when accelerating no probs,goes like s**t off a stick, nothing picked up when it was rolling road tuned but on rollers my opinion is, it is slowing down gradually & not trying to hold back, could this be a gear box fault

be grateful to hear from anyone with this same fault