Originally Posted by Jeff240sx
Damn Dan.. right on it. The water pump is a $35 item and takes 20 minutes to replace. The fan has a clutch on it, which itself is replaceable, and is usually a culprit of overheating. The odds of the 2ndary fan causing this is pretty low. Bleed off the system as stated.
Next, is it really overheating, or could the temp sensor (one of the two on the intake manifold. the one with 2 leads going to it) be going bad and throwing the gauge off?
-Jeff
my gauge is being tricky lately too. it takes longer for the needle to rise, and when i get into boost it dips cooler by a tad bit....i know my turbo system isnt that efficient. i checked it today and wiggled the shitty one pin sensor on the upper coolant neck by the head...i think its on the fritz. car runs fine however.
funny thing is, i replaced my 'weeping' water pump about a year ago with the one off my spare motor in my garage, and to this day, i can't tell if maybe the RTV messed up or it's trying to 'weep' a little too...either way i have the slowest coolant leak in the history of man..not even enough to make leak spots on the ground...there is slight coolant on the crank pulley and lower belts after i shut the car down, but its so hot it evaporates before enough of it can start dripping. i top her off about once a month or so, just too lazy to get a new one and change it out...
btw where the hell do you get $35 KA water pumps? courtesy is like $70, local dealers are even more, and discount auto ones have been known to have shitty impeller blades (smaller).