went for a ride in the mountains about 5000' elevation and had an overheat. my brother in-law wasn't watching the temperture and the car died. towed the car home and it started up. one injector made nailing sounds and the temp rises to the red.

i flushed out the cooling system and changed the stat. i changed all the injectors. the car now runs really nice with more power. however, the temp runs up to around 120 near the red and my heater blows very cold ac air. i switch the heat to the full hot position and only ice cold air.

i am gonna check on the mono valve... i hear a gurgling sound in the heater core when i turn the engine off.

anyone got any ideas on whats wrong?