Q: Odometer works but speedometer only after 30 minutes drive time. on 1994 Volvo 940

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
Car does have 270,000 miles.
(1) Answer
You may have a bad speedo or instrument panel circuit board. When you are driving the car and the speedo is not working, smack the top of the dash and see if the speedo starts working. If it starts working, there is likely an issue with one of those two items.
Didn't find what you were looking for?