lx5.0

every i drive my car hard it overflows the reserve tank and its like boiling and also when i get to a stop my temp needle starts to climb to like the third line to the last but once i take off and get some speed needle starts to drop, and once i turn car off and let it sit radiator starts to suck coolant back in , but when driving normally it doesnt happen, could i have a bad fan or clogged radiator

mjr46

I'd start with replacing the clutch fan, make sure system is bled properly throw on a new radiator cap and if it still does it after that , it may have a partially restricted radiator but I'd assume a fan first

19stang88

it would be a good idea to start with the fan and fan clutch. Also check if your fan is spinning while your car is on. sometimes the shroud can slip down and prevent the fan from spinning and cooling properly.

lx5.0

well yesterday i was looking at it and noticed my belt was rubbing with water pulley and tensioner, so i replaced the belt, i guess old one stretched, and i also noticed that sometimes u can hear the fan spinning and blowing air and somtimes u cant, and my fan does not feel as tight as it use to when turning it by hand so im either going to replace clutch fan or upgrade to electric

safado

when the engine is hot... try to stop the fan with a piece of cardboard.. if you can stop it the fan clutch is fail..

mjr46

sometimes you can hear the fan and sometimes not because it's what you call a thermostatic fan clutch.