Drive side under the dash and right side under the dash

What is your question?

92 cad deville- When the service engine soon and the service vehicle soon lights come on the mph stop working, A/C start blowing hot air car start running bad. What can I do ? P/S The transmission start acting up.

What makes this problem better or worse?

worse when cold

How long has your 1992 Cadillac DeVille had this problem?

about 2 months