i all need some help my dads got a v6 cougar and when he starts it up from cold and moves the steering it makes a loud whining noise which then goes by the time he leaves the street (100M) then occasionally it does it again when driving but its intermitten.

its only started after it was serviced and found to have a leak on the power steering pipe. the pipe was fixed and power steering fluid was topped up

the car also has a induction kit fitted and a de-cat

thanks

lewis