Overheating
Asked by Shawn Apr 01, 2017 at 08:38 PM about the 1999 Mercury Grand Marquis 4 Dr LS Sedan
Question type: Maintenance & Repair
I have replaced all hoses, the radiator, the
water pump, thermostat, and reservoir tank
and it is still loosing coolant. I can't see any
visible leaks anywhere, what could be the
problem
13 Answers
2 things...did you purge the cooling system after refilling it? and do you notice a lot of white, sweet smelling exhaust out the tail pipe?
I did purge it and there's not a lot of sweet smelling exhaust but I did see some white smoke and water come out of the exhaust mid day
But you smell a sweet smell? That would be coolant burning off in the cylinders. Water dripping out the tail pipe is just condensation.
Yes it's kind of a sweet smell
Sounds like a head gasket then.
Ok what's the best way to confirm that so I can solve the situation
Doing a compression test on the engine will show some low cylinders, or have the cooling system pressure tested. Taking it to a shop to have it verified would be the best thing to do.
Ok I appreciate the advice a lot thank you
I have a 1999 Mercury Grand Marquis and my car is running hot I just put a new radiator and water pump in it is not leaking from the radiator it is leaking behind the passenger tire not to mention it was smoking under the hood on the same side around the air compressor and my ac is like the heat is on to can you help me please
