Question about 1996 Mercury Grand Marquis
My 1986 grand marquis seems to overheat after you run it down the highway for a while. The radiator was overflowing into the plastic tank which was squirting water out too. It doesn't seem to have a whoal lot of pick up and the engine started cutting out. I'm trying to sell it, and don't know where to start on fixing it. also, it's been sitting for 8 years.
Sounds like the thermostat is stuck closed.
If the car is overheating, they will also hurt perfomance.
But after sitting 8 yrs, it's hard to say what else might be wrong.
Was it just sitting, and you threw some gas in it to get it running? Or did you go through the car first to do some maintenance? Like an oil change, flush the gast tank and carb and put in all fresh. Change the fuel filter? and the list goes on. A car sitting that long can develope some problems just from sitting. If you could list what you have and haven't done to the car before this would help.
Posted on Aug 11, 2008
Any car sitting that long is going to have some issues. It could be several things. The thermostat could be stuck closed. The radiator could be stopped up. The fan clutch could be inoperative. The waterpump impellar could be deteriorated to the point that it will not circulate coolant. The worst would be that a head gasket could be bad and causing to overheat and misfire. The first thing to do is replace the thermostat and purge any air from the system. Use water and not coolant to verify the repair. If this solves your issue you can drain the water and fill with proper amount of coolant. I must recommend checking for white cloudy smoke from the tailpipe as it is a sure fire sign of a blown headgasket.
Posted on Aug 11, 2008
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Posted on Jan 02, 2017
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