yes the 302 or 351 cubic inch v-8 will fit the 302 and 351 engines will not fit a 1994 because the engine in the 94 is a 4.6L and not compatible with the transmission bellhousing.
The stock amp in a 1990 Mercury Grand Marquis is in the dash behind the radio.
Check the engine end of the upper radiator hose
YES , a 1990 Mercury Grand Marquis 5.0 liter V8 engine has a PCV valve ( Motorcraft part number EV-98-B ) going into the intake manifold
underside of the car in front of the fuel tank.
The thermostat is located on the front of the engine under the elbow at the end of the radiator hose
8 spark plugs
how can i find where the camshaft sensor on a 1990 mercury marquis
It doesn't have one. The car uses Fuel Injectors. ============================================================================= According to my Chilton's Auto Repair Manual : For a 1990 Mercury Grand Marquis : The 5.0L / 302 cubic inch V8 is fuel injected The 5.8 / 351 has a carburetor ( the 8th " character " of the VIN is a " G " ) The carburetor is located on the top of the engine , below the engine air filter housing
the fuel pump is located inside of the gas tank.
For a 1990 Mercury Grand Marquis : According to my Chilton's Auto Repair Manual : ( 20.0 U.S. gallons with the 5.8 liter / 351 cubic inch V8 ) ( 18.0 U.S. gallons with the 5.0 liter / 302 cubic inch V8 )
my 1990 mercury marquis transmission is slipping in overdrive what do i need to look for and how can i fix it
Is the big silver plate on top of the engine that reads 5.0.