Thermostat not in the Car, New One Installed, Car Overheats
The stat needs to be for a Marauder. Most every auto part store will sell you one for a Grand Marquis and they will not work, it’s what their computer shows. Make sure that they actually installed the correct one and that they properly burped the cooling system of air. These engines are picky and it’s quite normal for an overheat after the system is opened and not burped right.
Someone here will have the correct part number.
Not knowing the mechanic makes it hard to trust that there wasn’t one previously installed. Just sayin it’s a good excuse to sell you on other items if it didn’t overheat before but does now. When’s the last time it was touched? You probably had zero heat if this was true.
If everything is how they say (with the proper stat and burped correctly) I’d be looking to do a block drain flush before a pump. Sounds like a blockage somewhere. I’ve personally never seen a pump fail to spin without having a blown bearing. It would also normally be leaking out the vent hole.
What was the condition of the old coolant?
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