Quote:
Originally Posted by ClockworkC5
i installed a hypertech 160 stat a week ago and have the fans tuned to turn on at 180. the fans are turning on but it still running hot at times. theres plenty of coolant. i filled it back up with dexcool. not leaking fluid. any ideas? before when i had the oem stat i never went over 196. so i dont really think its the water pump. also just out of curiosity. our ls1 water pumps, when they start taking a dump to they piss coolant out like the lt1s?
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When you change out the Thermostat you get air into the coolant system. You MUST run the engine up to operating temps with the cap off the coolant tank to allow the air to escape. You should also use a mix of 50% Dexcool and 50% Distilled water.
Check your radiator. They get clogged with small stuff. Take a garden hose set on "spray", not a heavy stream, and try to wash out the debris in your radiator fins.
Good Luck...