Yesterday got in, turn signals would not blink. Then the mechanism would click like they were blinking when they were not, then it was Okay. Drove a few miles today. Stopped a light by my house, noticed quite a bit of smoke. Drove the block to my garage, almost there and.... REEEE CRASH CRASH (not sure how describe the loud unusual noise) and it died. pushed it into garage. Opened hood, lots of smoke. Let it sit for 20 minutes. Checked oil (more so to calm my nerves). Oil level good. WEnt in to turn on to check oil pressure, noticed when I turn key to the glow position, the relay makes a much louder than normal click. Turned car on, ran for a second or two then REEE CRASH CRASH and died.

Please help.

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1981 300D 205,000 mi.