Question about 1998 Buick Park Avenue
When an engine overheats, the transmission temperature will increase as well.During an overheat,
heat from the engine is trapped inside the bellhousing and, the transmission cooler lines that run through the radiator where the fluid is being heated instead of cooled. these conditions combined will quickly deteriorate the trans fluid to the point that is no longer can do it's job. If the leak is minor and the trans is shifting properly, I would change the trans fluid and filter and add a good additive such as the one made by lucas. If the leak is not very small, I'd have the trans rebuilt before using the car.
The part you wrote about not being able to turn the engine by hand. Is that after the engine was changed? If so you don't want that engine (may be leaking coolant into the cylinders and causing "hydro-lock") In that case the smoke is not from the converter, but coolant steaming in the exhaust system. Overfilling the oil in the crancase will not cause a no start though it can damage seals and enbine bearings but that takes time. I see a problem here. Either you have the order of events confused or I read this wrong, or your mechanic should be doing some other kind of work (making hamburgers?)
Posted on Dec 10, 2009
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Posted on Jan 02, 2017
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