going on from my past pasts i have stated that ihave a problem with my 4.6 hse over reving on tick over and drinking fuel , i have noted that on cold mornings ie: 3 and below it revs up to 3000rpm then latter in the day when the air temp warms up it's fine
has any one got any ideas

its's had new stepper motor
new ht leads
new plugs
full service
and cost loads of money so far
last weekend had a full electroic check up that come back fine with no faults listed
pls help as the other half what to get rid of it now with these problems