My 95 Eclipse GS keeps overheating and it cant idle without overheating.
-My guess is the water pump is rusted ### i've been running on water for 1-2 week. do i need new water pump?
-How can i check if its running alryte and something else is wrong, not the water pump?
-Can my heat sensor be faulty?
-Also that my temperature indicator jumps from hot to cold once in awhile. would intercooling solve my overheating problem?
-I need your opinion ### i'm new in this

things, should the problem be fixed with a rust removal, or a new waterpump or should i get a new cooling system or even an intercooler?