I’ve have done this repair on a couple of 4.2L early 2000’s but not on this model.
I had a coolant leak and thought it was the thermostat so I purchased a new thermostat and housing. After installing the new thermostat and housing, I did a run test to operating temp and confirmed no leaks. This morning in preparing to purge any air from the system, I was topping off the radiator then noticed a pretty large leak. Obviously I misdiagnosed the source of the leak. The new Gates water pump comes with a thermostat housing gasket (but not the housing or thermostat) so not having any leaks from the new thermostat with no housing gasket, I’m wondering if adding the housing gasket on the new pump might prevent the rubber ring on the thermostat from seating properly. Should I use the housing gasket that is supplied with the water pump or not?
Question 2 are the these torque specs correct?:
Water pump 11 ft.lbs first pass then 22ft.lbs second pass, alternating bolt pattern.
Idler 37 ft.lbs
Any sealer recommended, possibly to keep the gaskets in place even with studs inserted?
The Car doctor YouTube channel has a great video on the 5.3L, originally post here by another member.
I had a coolant leak and thought it was the thermostat so I purchased a new thermostat and housing. After installing the new thermostat and housing, I did a run test to operating temp and confirmed no leaks. This morning in preparing to purge any air from the system, I was topping off the radiator then noticed a pretty large leak. Obviously I misdiagnosed the source of the leak. The new Gates water pump comes with a thermostat housing gasket (but not the housing or thermostat) so not having any leaks from the new thermostat with no housing gasket, I’m wondering if adding the housing gasket on the new pump might prevent the rubber ring on the thermostat from seating properly. Should I use the housing gasket that is supplied with the water pump or not?
Question 2 are the these torque specs correct?:
Water pump 11 ft.lbs first pass then 22ft.lbs second pass, alternating bolt pattern.
Idler 37 ft.lbs
Any sealer recommended, possibly to keep the gaskets in place even with studs inserted?
The Car doctor YouTube channel has a great video on the 5.3L, originally post here by another member.