Pls help need to get this fixed asap, my other car is down as well and the only other vehicle I have is my Wife's and she has dressed it up to look like "Hello Kitty"

I have a 1987 420 SEL and this is what the problem is:

- Starts fine.
- Usually a rough idle. Not visible on the Tach but the Oil pressure gauge is going crazy.
- runs rough until 1200 rpm then it smooths out.
- Transmission kicks when shifting from 1st to 2nd but much better from 2nd to 3rd.
- Not burning any oil.
- No noticeable leaks.
- Vacume Lines look good

Also just started at same time..Clock quit working and Seatbelt light stays on. Fuses all look good. any connection??!!?

Have changed spark plugs & wires about 500 miles back when I had the almost identical problem but that fixed it.

What could be the problem this time? Appreciate any help as I DON'T want to drive the "Hello Kitty" car!