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1999 Cadillac DeVille - Page 9 Questions & Answers
Car overheats on freeway
Check your oil dats da only other solution to this problem your car might be burning oil and cause it to run hot
What causes the a/c, dash lights,windows ,radio not to work
I know it sounds vague, but with so little info, look at fuses. Sometimes a fuse will blow with age, but most times it's a short. It's best to buy one of those fuse testers as it's not always easy to see if one of the plug in type is blown.
What color anti-freeze igoes in 1999 cadillac concourse?
I can't advise on the type of coolant additive (I don't know your model) but in general if the coolant level is OK already then the additive won't explain this overheating.
It could be
- head gasket leak to the coolant jacket. There is a cheap test a mechanic can do for combustion gases in the coolant
- faulty temperature sensor unit
-slipping drive belt to the fan (if fitted)
- thermostat stuck closed
Coolant leaking somewhere unknown, have to add to
sound like a bad heater core! the heater core is like a small radiator that is usually locaded in the dashboard on the passenger side. now if the leaking is really bad you are going to see water dripping by the front passenger tire or if it gets really bad it may leak inside the car. in order to fix this problem the HEATER CORE must be replaced. good luck
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