1300 multijet dil, runs and drives fine, but every now and then when warm the tick over goe,s up slightley the cooling fan comes on and the fule comp drops drastic.if i pull the egr connection off the fan stops ? and the revs drop.if i put it back on all stays the same , ie the fan does not restart or revs do not go back up ,i have done this repeatedley if it was a sticky egr it would have stuck at least once but it did,nt. also if it was hot the cooling fan would have come back on.and when it does this it seem to be over fueling.HELP MEEEEEEEEEEEEEEEEEEEEEEEEE PLEASEEEEEEEEEEEEEE:wor ship:: cry:EEEEEEEEEE