I havent noticed any dash warning lights.

Just a lot of small problems that add up and might be tied to eachother.

Im trying to figure otu if one thing can be the cause for all these issues.

such as, hearing the buzzing noise when it shouldnt be coming on,
doors not locking with key ( well not all the doors)
seems like pse pump not working.
reverse bars wont go down.
and car kind of stalling after really getting on the car hard for 2 stop lights. then finally going away after driving for a minute or two.

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1992 SEL 600..... 143,000 miles