your speed sensor is failing, the speed sensor is located next to your oil filter it controls your speedometer
there is a problem with your cruise contol,have it checked. also have cam positioning sensor checked
Having the radio in a trick go out while driving can many of things. The most common thing that causes this would be lose wiring.
when road conditions are bad, slow down your vehicle
There are several things that can cause your 1988 Cutlass supreme to stall out while driving down the road. The most common cause is a malfunctioning fuel pump.
For starters change the fuel filter
It can lead to an accident
your alternator is dead.
slow down before entering and then accelerate while going around
Water Pump or Thermostat. May have to change water pump to replace thermostat.
Change the fuel filter first,
Down and towards the outer edge of the road. Away from the lights.
Could be but probably an engine problem.