Over heating LD9 [Archive] - GrandAmGT.com Forum

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caboose73
05-07-2011, 11:01 AM
My 2000 Alero with an ld9 over heats when it sits still the temp will slowly climb but once i start moving it goes down until it reaches normal operating temp. If i crank the heat to max the car temp goes back down to operating temp. I just put a new radiator in less then 3,000 miles ago and just put a new 180* stat in last week and none of this fixed it. I have coolant pressure when i release the cap so i assume my water pump is working and my fans kick on like there supposed to. So what could be causing this air in the system? starting to go bad water pump?