2003 range rover hse , loud knocking noise when going from reverse to drive, 5 minutes later a grinding noise happened that was very loud. the car responded with a loud grinding sound when trying to apply gas. i was lucky that i was not on a highway and could pull the car over. *tr the check engine light illuminated, there was a radiator leak and the left rear tire had a slow leak. updated 10/11/07. *jb