mass air flow sensors are generally located in the air passage between the air filter and the intake manifold.
18 MPG.
The factory radio on a 1987 Mercury Grand Marquis is made to play local radio states and cassette tapes. It is connected to a high fidelity sound system.
autozone.com
under the dash, driver side floor
According to my Chilton's Auto Repair manual : A ( 1987 ) Mercury Grand Marquis has a ( 20 U.S. gallon gas tank )
At the St. Thomas Assembly Plant (STAP) in Ontario, Canada
20 gallons , according to my Chilton book
According to my Chilton's Auto Repair Manual : The ( 1987 ) Mercury Grand Marquis holds ( 20 U.S. gallons )
First check spark, if you have, then check the fuel pump for pressure.
go to auto zone and give make and model
I'm not sure if the 1986 is the same as the 1987 , but ( on the 1987 Mercury Grand Marquis the 5.0 liter / 302 cubic inch V8 engine is rated at 150 horsepower and the 5.8 liter / 351 cubic inch V8 engine is rated at 180 horsepower according to my Chilton's Auto Repair Manual )
According to one of the Ford websites : For a 1987 Mercury Grand Marquis , 5.0 liter / 302 cubic inch V8 engine : The spark plugs are gapped at ( .050 inch )