Rattling noise at 1000rpm -1500rpm

[cressws1]

As the title says really, Seems to be coming from under the bonnet, Possibly underneath the car in that area. I took a peak underneath and right in the centre of the front bumper about 1 foot back is what looks like some sort of heatshield thats come loose at one end, Could this be it?

Help!

[mintalkin]

manifold heatsheilds are a well known sorce of rattles, see if it will tighten up.

[Sid_WRC]

on a 99 focus its possible the nuts have rusted which hold the heatsheild in place, my mates car (similar age) had to have it taken off and have the holes drilled and tapped because the bolts and nuts had coroded that bad,