Hell recently, the 95 Monte z34 is having electrical problems, My gasoline and coolant temp gauges keep moving every times I accelerate and when im in idle my temp goes back to being about 1/2 and my gasoline to what it should be.

Also, one of my fans isn't turning on. The drivers side is okay, but the passenger side rad. fan doesn't turn on. I replaced it and still nothing. What can this be?

What should I look into?