Anyone have any ideas on my 95 Lumina 3.1 L overheating problems. I had the lower intake manifolds repaired but problems still persist. Temp seems to fluctuate more than I would have suspected. New water pump with new GM impeller design - not a rebuilt one with original fin design. New thermostat. Tried many times to purge the air. With a/c on, only Fan #1 comes on and it cycles about 1 minute on-off cycles. Fan #2 doesn't come on until it really heats up, well over 3/4 on temp gauge, almost at top end. Shop manual seems to say with a/c on at idle both fans should come on and stay on - mine doesn't work this way. Can't seem to keep this thing from overheating. Any ideas PLEASE??? Thanks DRO