Parking brake on or frozen caliper? Smoking was hopefully from the rotor(s) not the engine. Temp climb hopefully from the drag. Screeching tire(s) hopefully from brake. Moves in reverse not forward hopefully because lower gear ratio in reverse overcomes drag from stuck brakes? It could be.

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The Golden Rule

1984 300SD (bought new, sold it in 1988, bought it back 13 yrs. later)