[PDW]

ok, i got my dpfe changed unde the extended warranty plan and my cel has yet to come back on, so problem solved there... but my car still has a distinct grumble in drive at really low rpms, well actually it does it in anything other than park.. whats weird is that it seems to become less noticeable the more i drive around... so the warm up actually lessens it.. but still what the heck is that noise ? air leaks ? any tips on what should i check first ? :wacko:

p.s - yes this is the same noise i told someone else was ford focus nature but i have to be sure... cant be too careful :D