1998 Plymouth Voyager dashboard guages and trouble lights

Hello, I just bought a 1998 Plymouth Voyager with a 3.3 L 6 cylinder engine. Everything about this vehicle is absolutely immaculate. However, I'm finding that the guages will not operate, especially when I start the car in cold weather. After a while, when it's warmer, the trouble lights go out and the guages come to life. At first the "check engine" light wasn't on. Now it is and it stays on (at least this last time ai drove it) even after the guages, etc. Are working again.

Thank you.