I HAVE A 2000 SUB OUTBACK STATION WAGN AND HAVE REPLACED WATERPUMP AND THERMOSTAT AND RINSED OUT THE RADIATOR AND ENGINE STILL RUNS HOT AFTER 15 MINS OF DRIVING, -- WHY?

So the overflow tank would be pressurized with a radiator cap. This would no doubt be higher than top of radiator and engine .Keep filling it without engine running and heater on hot, then start up, when engine gets hot and thermostat opens, water should leave overflow and you need to top up as required.

it has own head gasket on #6

Holts Wondarweld
Flush engine.
EXTERNAL CRACKS
1 Run engine until hot,drain off enough coolant to remove thermostat.
2 Remove thermostat.
3 Mix contents of can thoughoughly! and pour contents into thermostat opening.
4 Replace thermostat cover.& fill radiator with hot water,replace radiator cap.
5 Run engine at a fast idle for 15 mins,dont allow to boil.Top up if necessary.
6 Leave Wondarweld in system for 2-3 days then drain off,flush system replace thermostat and refill.
HAIRLINE CRACKS
1 MIX thoroughly and pour into cold engine (radiator if it has a cap)
2 Run engine until hot.
3 Allow engine to cool then run again until hot.
4 Follow procedure 6 above.
INTERNAL CRACKS
1 Follow external crack instructions except after pouring Wondarweld into engine remove spark plug from
affected cylinder and run engine for 20 mins. If more than one cylinder affected run for 5 minute intervals.
2 Allow engine to cool then drain cooling system and refill with clean water.
3 Drain sump & flush,refill with fresh oil.
Note:- 1/2 pint of Wondarweld for every 6 pints of water,DO NOT add antifreeze for at least 3 days after process.

hi it could be a few problems but i would start with replacing the thermostat as that is a common cause, its located on the bottom of the engine behind the bottom radiator hose. Second check you dont have a hole in a hose or radiator itself and your electric fans are going. If all that fails the only other thing to casue such a problem would really be the water pump getting worn

hi it seems to me like its your waterpump it will prob be worn or stuffed

Have you checked the coolant level? If it is low, the car will run hot, and coolant won't flow through the heater core, which will result in a no heat situation. If this isn't the problem, let me know, I will try to help further.

sounds like a thermostat problem or radiator fluid is bad check thermostat first

Replace the cooling fan sensor.

Sounds like an overheating problem, best to get it checked, maybe thermostat stuck closed, pluged radiator, head gasget, cracked head.

check the water pump id sounds like not eneough flow.

PK