No it does not boil over
Ford Q&AAsk Your Question
1999 Ford Ranger Question: Question - wickedash, Norfolk, VA, February 26, 2009, 03:18
Answer #1hemicuda March 13, 2009, 17:19Master
Normal operation of the engine warning up is the temp will go higher than normal at first until the thermostat opens then it will return to normal. Better check your coolant level when the vehicle is cool, maybe its a little low and thats why the temp is rising when you turn the heater on.
Replyhemicuda, March 19, 2009, 18:30Master
Go by Autozone and have them put the scanner on it to pull the codes if any