Re: Overheating
My4dv8 has the flow backwards. Hot water is pumped out of the engine through the top hoses into the upper tank, then flows downward as it cools into the bottom tank and then back into the engine block. This is the same direction as natural thermal siphoning would cause the fluid to flow.
The thermostats should be in the upper hoses with the actuating bulb facing toward the engine (downward). I drill a 1/8" (3mm) hole in the thermostat flange to aid in filling the system and to allow trapped air to escape easily.
If the thermostats are in backwards, they will not work properly. I have the electric fan sensor inserted between the upper fins and the bottom of the upper tank. Works well there.
Good luck with the radiator, it's an expensive part.
Your English is much better than my (non-existent) German.
John
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Last edited by J Witt; 05-30-2016 at 09:33 AM.
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