1993 Mercury Grand Marquis - Answered Questions & Fixed issues

THIS IS STRANGE, BECAUSE THE NEXT PAN BEHIND THE OIL PAN IS THE TRANSMISSION PAN. UNLESS MECURY HAS DEVELOPED SOME STRANGE SYSTEM THERE SHOULD BE NO WATER OR COOLANT ANYWHERE IN THAT LOCATION? IF THE PLASTIC PLUG IS LEAKING IT CAN BE FIXED BY REMOVING IT AND WRAPPING THE THREAD WITH TEFLON TAPE AND RE-INSERTING IT AND TIGHTEN IT. IT THE PAN ITSELF IS LEAKING, THERE ARE ONLY TWO THINGS HERE. ONE, YOU CAN RE-TIGHTEN THE BOLTS TO SEE IF THEY ARE LOOSE AND SEE IT THIS STOPS THE LEAKING. OR, IF THE LEAKING DOESN'T STOP, YOU NEED TO REPLACE THE PAN GASKET WITH A NEW ONE AND REFILL THE TRANSMISSION WITH NEW OIL. YOU MIGHT AS WELL CHANGE THE FILTER WHEN YOU HAVE THE PAN OFF, BECAUSE IT IS PROBABLY OVERDUE. I THINK YOU WILL FIND THIS LEAK IS A STICKY RED FLUID CALLED ATF OR AUTOMATIC TRANS. FLUID. THAT WILL NEED TO BE REPLACED. NEW FILTER, NEW GASKET RETORQUE THE BOLTS, IMPORTANT, DON'T WANT THAT THING FALLING OFF, NEW FLUID, YOUR BABY SHOULD PURR AND NOT WIZ ON THE FLOOR ANYMORE. NOT SURE HOW TO DO ALL THIS? BEAT FEET TO THE NEAREST PARTS STORE AND BUY OR ORDER THE CHILTON OR HAYNES MANUAL FOR 93GRAND MARQUIS AND YOU WILL HAVE PICTURES AND STORIES YOU WON'T BELIEVE! CAN'T GO WRONG! GOOD LUCK!

NEED HELP REPLY TO:ARCLIGHT1217

The V8 4.6 liter takes 6 quarts with oil filter change.So you'll need to buy 7.

Hello. It seems there is a 'short circuit' in your car's headlamp wiring; rarely the switch itself. This will cause the headlamps to light for awhile then go off by themselves. You can switch relays of the same design to confirm my belief. Good luck and keep me informed; if you want to.

Make sure battery has a full charge. Try cycling the ignition switch on and off several times before you crank it, to see if it helps. If it helps, check your fuel system. My info says fuel pressure, 35--45 psi. How long since a tune-up? Any applicable trouble codes?

located up under dash mounted on a bracket with the brake pedal

I do not want to be wrong with my answer but it sounds like the idle control solenoid may be buzzing or the chamber it operates in needs to be cleaned with WD40. Sometimes when a solenoid routes vacuum to a part and sticks, the vacuum is going where it never was intended to go and makes noise. You might want to look at vacuum routing or things like the air horn or if the air cleaner is connected completely around its mount.

Lets see the picture

Look at 1993 mercury grand marquis fuse box diagram Google Search

Based on the year of your car, would not be a bad idea to warm it up. After many years, engine components have worn and could show as poor engine performance. A good way to help is by adding engine oil additive when you perform your service. May be a good idea to add fuel additive once every other month. When fuel tank less then half tank, add additive and fill tank. This will help mix better.

Charlene, Cam shaft sensor located upper front of engine by idler pulley.Check the attached links,instruction and guides, Good luck "I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info." How To Install Replace Cam Position Sensor 4 6L V8 Ford F150 Expedition...

Clogged catalytic converters

Removing the stereo should have no effect on starting the car. Was the dome light on/door open while you were doing this? Possible dead battery. Try giving the vehicle a boost and see what happens

There's a round hole about the size of your pinkie in the back of the radio. It mates with the plug on the antenna wire.

I covered one of mine with a custom dash mat...about $50. from JC Whitney...on line...much cheaper...leather is not usually used on top side of dash due to Sun rays...

According to how deep they are Meguiars has some good polish and wax kits. May need machine polishing to blend out the scratches.

Probably a bad antennae connection or pinched antennae cable, it is connected to the back of the radio...is the external antennae still OK?

Start by removing the radio, and tracing the antennae connection that connects to the radio...most will use a connection between the radio, and antennae too.

Possible failed amplification unit (may be internal to the radio or may be external somewhere in the car, usually in the trunk or under the rear seats)

There may be more than one fuse behind the radio. I have 2, one for the display and one for the output section. It is possible the second of those has blown . To check you will need to access the wiring behind the radio underneath the dqshboard

Possible fuse in the fuse box or if not, a brake light switch that you can order at the auto parts store and have a friend or mech. install