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Water pump explosion 900 1993

uid 18083's pic
posted by  lucid on  Mon Dec 18 09:29 CST 2006
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last visit: Fri Oct 24 12:31 CST 2014
[RELATED]

"so he flushed everything and bought me a new radiator and is installing that right now, because i guess the transmission fluid is cooled by the radiator;"

I'm sorry to bring you possible bad news when everyting seemed so right... But in my opinion there is a danger that the transmission has been contaminated with coolant.

If the tranny cooler (in the right radiator tank) was leaking tranny fluid into the coolant, the fluid flow will reverse with the engine off. This is because the coolant system's 12-15 psi pressure takes time to drop as it cools, but the tranny fluid pressure quickly drops to zero with the engine off. The pressure difference would push coolant into the tranny cooler until the pressures equalized. How much contamination is anybody's guess

If it were my car, I would want the tranny fluid flushed completely — not just a quick 2+ quarts drained from the pan — hoping the tranny has not been damaged already.

You could probably do the flush yourself, using a fairly simple procedure that is well-known here.
But who is responsible?
--
Bruce Young
'93 940-NA (current), 240s (one V8), 140s, 122s, since '63.






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