Replacing THERMOSTAT and FLUSHING COOLING SYSTEM for the 2003 Nissan VG33E V6 Engine and is a Common procedure for many other automobile make and model. Learn How-To service and Maintain you automobile with easy and saving method. The thermostat is a temperature valve for liquid cooling system. The thermostat open and closes a main passageway to exchange fluid temperature. The flow of the fluid is cause by the water pump and not the thermostat. Failure to replace a thermostat for long term period will result in overheat engine damage or no heat from heater during cold temperature below 32F degrees. Today engine must have a thermostat for the vehicle to pass EPA state emmision gas laws. Failure to use thermostat while cause poor early morning start-up, consume additional fuel during normal driving, engine crankcase develop sludge, fowl spark plugs and damage exhaust catalytic convertor. Failure to use thermostat may cause burst damage to rubber hose and rupture coolant seals.
How to lower engine coolant operation temperature https://www.youtube.com/watch?v=lmP4PM-56eM .
Here is more information from the Nissan Factory shop service manual pretaining to the engine complete cooling system. https://drive.google.com/file/d/0B0LNCvWJP9khYXF4LThXV0QtRGc/view?usp=drivesdk .
The shop service manual also feature more information pretaining to this video. Click on the In-Video Card for more information on how to prevent Engine Overheating.
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You have years of auto mechanic experience and yet you dont know how clutch work what a dummy you are hahaha
Lmao therefore you dont know how clutch works
I believe Clutch fan is engage when engine run not by engine temperature or sensor like what you said. the clutch on the fan expand as soon as the engine starts to run causing it to lock and spin
Thank you very much! It helped me a lot.
Great link. Just one question? I live in southern cal. now since the weather varies between a low 50degrees to a high of 90 to 95 degrees should i still remove the bleeder valve? p.s. i own a 2002 3.3ltr engine xterra.
Thank you for taking the time to post this video ! It helped me save alot of time
What i like to do for the thermostat is i cover the spout mating surface with a thick(but not too thick) coat of silicone and barely tighten the bolts to where the silicone doesn't get squished and let the silicone set. after that i tighten the bolts and the silicone will act like a rubber gasket
Thanks Steve you taught me two new things today. Now I will add that info to my next projects. I have a 2004 nissan maxima 3.5l replaced thermostat with whole housing because it comes that way on these cars and new radiator. New radiator blew from bottom seal plastic a month later. The hoses were still hard with pressure and air. Noticed no water returning to coolant resovoir and cap was so tight on top of radiator. Like no way for air or water to escape or bleed. Just Thought i share info for others in case they have same problem. Replaced radiator with warranty free and new cap and problem solved.
Did you notice that the radiator cap did not release pressure or spill water from nozzle. When engine reaches hot temperature, pressure from the cap spring is supposed to release itself so that no buildup of air will cause hoses to harden or radiator itself to break or blowup. Sometimes the CAP ITSELF is to blame for breaking radiators and engines. So change caps too from NAPA OR OEM DEALERS. NOT cheap autoparts due to defective products. The cheaper the worst.
Thanks Steve great video, you helped me get another repair done on my frontier.
you did a really great job with this video. thanks for explaining so much and taking the time to get good camera views of what you are working on. this was very helpful.most useful tutorial I have seen.Thank you!