..!! "another" problem?? I understand the Sportage started overheating, eventually steamed coolant out of radiator...etc..etc....and blame was put on the fan...while it was - not "also" but right from the start- a classic head gasket failure....although not so frequent with this engine....
$4000 is steal...that's all, unless the engine seized completely and needs full overhaul, which is highly improbable. I did not do it on the Sporty, but will do it soon on son's Lada Niva, did it a few times on Dodge Omni, a litany of other cars..... my Studebakers,,,and '51 Plymouth,...and a few others....
A week-end job..... though not a party!
Pay a visit
HERE for an idea of the price of parts....
and check these threads out
HERE
and
HERE
for more info and links.