Something Strange Happened, Ideas?

I was driving to work this morning in my 87 240, it was raining and I was cruising in the hammer lane. All of a sudden I felt a sudden loss of power and there was a noticeable hum/vibration. I got over in the slow lane in case I needed to pull over, but I didn't see any warning lights so I kept going and it went away after a minute. It seemed fine the rest of the way to work. After work I got in my car and noticed the overdrive arrow light and the engine oil light were slightly illuminated and were softly flickering (before I even put the key in the ignition). I checked the engine oil and it was fine so I started it up and there was no lights on. It seemed fine on the way home, but defiantly something strange going on. Any ideas?

Haystack said:

I was driving to work this morning in my 87 240, it was raining and I was cruising in the hammer lane. All of a sudden I felt a sudden loss of power and there was a noticeable hum/vibration.

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Can you rule out the possibility that the OD turned off and the hum/vibration was the transmission shifting to 3rd?

This is a fairly common issue. Sometimes caused by an intermittent relay or possibly rain related with a marginal harness/connection to the trans under the car.
Dave B.