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Volvo 240 - transmission oil in radiator. 200 1989


Thoroughly check the tranny cooling tank for a problem. If you find nothing, then do as the others suggest - replace radiator and flush tranny fluid ASAP. You should have some sort of warranty for that radiator!

Overdrive problem -
1. Replace OD relay with a used or new one and see if problem goes away. Can you borrow one to test OD operation? Just been through this with my car and it sounds like a defective relay to me.
2. If not relay, then check white wire running from shifter box to solonoid. Mine broke and was hard to find as it was hidden at back of tranny. Yours sounds like it could be grounding out against your tranny (as Cabbie mentioned) causing it to short at times....
3. Gunked up or bad solonoid. Tranny flush can cure clogged solonoid. Very doubtful that the solonoid is bad, but I guess it could be dying a slow death...

Lots more info in archives about OD issue. Do a search.

Good luck,

--
90 244DL 1/4 million miles - original engine/drivetrain :)






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