White smoke after using cruise control

cadillac
seville

#1

I have a 96 Cadillac Seville. After using the cruise control for several miles; as soon disengage and push on the gas pedal I hear a pinging sound and a cloud of white smoke comes from the exhaust. What could be causing this?


#2

Check the coolant level. White smoke is water vapor (steam). I don’t think the cruise control has anything to do with the smoke. Does this happen every time under similar circumstances, or was it a one-time event?


#3

Did you tap the brake to turn off the cruise control? Burning brake fluid (from a leaking master cylinder) also makes white smoke. If you ever see white smoke at stop lights, check your brake fluid level.


#4

Another very good possibility is transmission fluid being drawn through a leaking vacuum modulator. You’d best check the level of the tranny fluid too. A tech can check for signs of leakage.


#5

Coolant level is a little low. It happens everytime I hit the gas after having it on cruise.