What kinf od an engine does a 1999 mercury grand marquis have

knock sensor located on the 1999 Mercury Grand Marquis GS Google Search

you have a leaking fuel pressure regulator-Denny

the termostat have a flat side and point side .flat side go to inside of the engine .

If your transmission is not shifting properly, then you probably also have an"OD OFF" light (if equipped) and/or a "CHECK ENGINE " light that is illuminated or blinking. If this is the case, then you need to scan your onboard computer network to retrieve fault codes that will lead you to the cause of the problem.

Make: MERCURY
Model: GRAND MARQUIS
Year: 1999
Engine: V8 - 4.6L - FI - - GAS

Part Number: RS12YC
GAP : .054" (Original Equipment Manufacturer and/or Original Equipment Equivalent)

Hope this helps.

the dip stick for engine oil is present on your right hand at the middle of the engine

You will need to have a OBD2 scan completed to find out the fault and code that activated the check engine light.If you haven't a OBD@ scan tool you might want to stop at a garage and have it scared they might charge you for that the cost varies from $25.00 and up.

shift lock not working need to overide

HERE can find this diagram and description about fuses and fuse box locations: Mercury-Grand-Marquis-Owners-Manual

Hope helps (remember rated and comment this).

once every two years