20 Most Recent 2004 Mercury Grand Marquis LS Questions & Answers

Question edited for clarity. Question moved to model category. Very strange. I just answered this question. Did you post twice? It was about the factory recall? I suggested calling the dealership and telling that the module has failed and you need to be fast tracked for a fast replacement. Here is the wiring diagram https://www.google.com/search?q=2004+mercury+grand+marquis+ls+headlight+wiring+diagram ..

If you have the car turned off the airbags are not engaged. You don't need to disconnect anything. But if you want to feel safer you can disconnect the negative battery cable to the battery. That would cut all power to the vehicle.

If you car lifting the vehicle off of the ground. No you don't need to disconnect anything. If the car is off the air bags wouldn't engage. You can always disconnect the negative battery cable if you want to turn off all power.

Take an electric meter and test the horn relay. This part is found under the hood, inside the black plastic fuse/circuit breaker box. God bless your efforts.

Sometimes road gravel will get in thru the cooling slots. inspect it to see if that's the case. If you see any then use a knife like you do when robbing your kids piggy bank.

CHECK YOUR GROUND WIRE CONNECTION TO THE BODY.

your car and if you need to remove exhaust then do it.

Yes, It can be done. It will depend on how the pan is bolted on. Some vehicle makers fit pan bolts that are hidden inside the transmission housing. This means the transmission will need to come off. If you can get a workshop manual for the vehicle it will give you a guide as to where all the bolts are.

That is a lot of information to give. Your best option here is to buy a good quality workshop manual for your vehicle. That should have everything you need and more.

Text based help and videos. The best way is to measure what comes out and replace the same quantity. If it has a manual dipstick, you can fill by level once it has warmed up, then turned off and settled. https://www.google.com/search?q=2003+mercury+mountaineer+AWD+V8+transmission+fill+capacity%2Frequirements+after+a+fluid+change+and+filter+change

AUTOMATIC TRANSMISSION FLUID

For Automatic Transmission: 5R55E....MA5 SPECS INFO Capacity: 5 speed 5R55E Total Fill 13.4 quarts. ..

It is never as straightforward as you think because the entertainment system is monitored and run by the body control module and put warning chimes and things like the blinker clicker through the audio system. https://www.google.com/search?q=2003+Mercury+Mountaineer+radio+and+entertainment+wiring ..

Better to replace the float and switch. https://www.google.com/search?q=2001+Mercury+Outboard+Engine+and+the+oil+tank+float+is+sticking ..

Question edited for clarity. Apparently it isn't easy. https://www.google.com/search?q=2010+Mercury+Milan.+How+to+remove+backseat ..

In the link https://www.google.com/search?q=2007+Mercury+Grand+Marquis+firing+order ..

https://www.carcarekiosk.com/video/2006_Mercury_Mountaineer_Convenience_4.0L_V6/air_filter_cabin/replace It may not have one

You will need a qualified mechanic to look at this engine. If your timing belt snapped there is a very good chance the engine is junk. The only real way to find out is to take the cylinder head off. That way you can check the piston crowns and valves for damage. The fuel blowing back through the throttle can be caused by a valve issue from the belt breaking.

take car to autozone or other centers and have them check battery. If battery is over 2 years old you probably need a new one.

Have you replaced the coolant temp sensor?

you should contact mfg. Vendors and mfg's do not read this forum looking for their products.