20 Most Recent 1984 Mercury Grand Marquis Questions & Answers

302 5.0 liter or 351 5.8 liter engine ?

I would buy a new wiring connector from a good auto parts store or ford.

Check crankshaft sensor.

best left to a professional

yes replace it simple enough a couple bolts and adjustment

Check your blower motor resistor

in the tank

Have you checked the basics to know if it is getting fuel pressure and spark ?

where is the fuse box on a ford mercury grand marquis

did everything said to do put new heater core in and a new thermostat instill no heat

That sounds like your oil breather filter, Not the cap where you pour the oil in, Please give better details of where it is located,

I hope this is what you wanted

re check the coolant level, it most likely dropped when your engine reached temp for thermostat to open and took what you had just poured into radiator and put it in the block.