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Re: Coolant Change 92 Nis PU
There is a small bypass hose for the thermostat. Are you asking how to do a complete flush? If you want to make sure you get all the coolant out there is a 14mm drain plug on the left side of the engine block that will allow all the coolant to drain. It is tough to get to without the right tools. Make sure you remove the small bleeder screw on the thermostat housing when refilling so all the air is purged from the system.
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the thermostat housing is at the lower radiato hose that clamps onto the thermostat housing. With engine cool, drain fluid from radiator. The lower house is held on with a clamp. Un tighten hose clamp and remove hose.Unbolt thermostat housing and remove. Remove thermostat Clean housing and thermostat seat. Insatll new thermostat and gasket, with gasket sealer, and tighten thermostat housing.Reinstall hose and tighten clamp. Refill radiator with anti freez coolant.Start engine and let warm up to normal Check the heater temp. If heat is good, shut off engine and let cool down. Re check coolant level and fill if needed.Also when running, check for any leaks at hose and thermostat housing. If all checks good, YOUR DONE.
Step by Step
1. Find the lower radiator hose and follow it to the thermostat housing which is affixed to the engine block.
2. The thermostat is located just under the A/C Compressor.
3.Remove the clamp holding the hose but not before draining the coolant from the petcock, which is near the base of the radiator.
4. Remove the two bolts that affix the thermostat housing to the engine block, and remove the thermostat.
5. Clean the area leaving no residue of old gasket on both the housing and the block and install new thermostat in the same fashion that you removed it.
6.Fill up with coolant and water
fill at radiator there are 2 bleeder screws 1 located on thermostat housing and 1 located to left at water pump housing. open when engine is warmed up to bleed air and refill radiater after engine cools.
Follow the lower radiator hose and it will lead to the thermostat housing, bolted to the engine with two screws. Remove the two screws, along with the section of metal pipe that the radiator hose is bolted to, remove old thermostat, replace with new thermostat and proper rubber gasket. Bolt housing and metal pipe back onto engine.
its at the end of the coolant inlet pipe lower LH side of the engine. This pipe is below the alternator running from the lower radiator hose to the thermostat housing on the engine. Replace the O-ring at the end of the pipe if you are replacing the thermostat. There are 3 bolts holding the thermostat housing to the engine block. Hopefully this helps!! please rate...thanks!!
If the water pump is pumping you should be able to see moving water/engine coolant in the radiator when the radiator cap is removed and the thermostat is open. Have you checked to see if your electric cooling fan is operating properly?