LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

Why is my ls400 91 throwing water from a run off connected to overflow occurs at idle

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Old 01-22-18, 09:33 AM
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PatrickLs4
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Default Why is my ls400 91 throwing water from a run off connected to overflow occurs at idle

91 Lexus ls 400 throws water from behind driver light I got visual on leak looks like run off from over flow when get to hot why is my Lexus doing this o check t stat it opens in boiling water prob. Going to replace anyways maybe it's not opening enough IDK I do need to bleed system again since it threw water I flushed cooling system plz help
Old 01-22-18, 10:20 AM
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YODAONE
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Originally Posted by PatrickLs4
91 Lexus ls 400 throws water from behind driver light I got visual on leak looks like run off from over flow when get to hot why is my Lexus doing this o check t stat it opens in boiling water prob. Going to replace anyways maybe it's not opening enough IDK I do need to bleed system again since it threw water I flushed cooling system plz help
Check water control valve and, coolant resorvoir level sensor gasket for leaks.

Coolant resorvoir cap?

Replace your original thermostat and gasket with OEM.
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