Nooise coming from beside intake

Check Fuses and Relays, but this has a GEM (general electronics module). You may need and auto-electrician as nothing covers brake lights, but that may be a fault with the brake light switch.

Fuse Box Diagram Ford Taurus (2000-2007)

https://fuse-box.info > ford > ford-taurus-2000-2007-fu...
Here you will find fuse box diagrams of Ford Taurus 2000, 2001, 2002, 2003, 2004, 2005, 2006 and 2007, get information about the location of the fuse panels ...

2003 Ford Taurus fuse box diagram - StartMyCar

https://www.startmycar.com > Taurus > Fuse box
The 2003 Ford Taurus has 2 different fuse boxes: Passenger compartment fuse panel diagram. Power distribution box diagram. * Ford Taurus fuse box diagrams ...

Question edited for clarity.
Question moved to correct year make model category.

Check the fuses and relays.

Ford Taurus (2000-2007) fuses and relays

https://fuse-box.info > ford > ford-taurus-2000-2007-fu...

2003 - Here you will find fuse box diagrams of Ford Taurus 2000, 2001, 2002, 2003, 2004, 2005, 2006 and 2007, get information about the location of the fuse ...

2003 Ford Taurus fuse box diagram - StartMyCar

https://www.startmycar.com > Taurus > Fuse box
The 2003 Ford Taurus has 2 different fuse boxes: Passenger compartment fuse panel diagram. Power distribution box diagram. * Ford Taurus fuse box diagrams ...

Ford Taurus (1999 - 2007) - fuse box diagram - Auto Genius

https://www.autogenius.info > ford-taurus-1999-2007-f...
Jul 2, 2018 - Ford Taurus (1999 - 2007) - fuse box diagram. Year of production: 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 ...

You have to pull the upper intake manifold , that black plastic thing ! Video on youtube showing how to do it . Ford Fusion 3 0L DOHC Upper Intake Gaskets Ford Fusion 3 0L DOHC Spark Plug Replacement

Try fuel injection cleaner this will help with the idling. If that does not do the trick take off the air tubes going to the injectors and spray in some injection cleaner and watch some, looks like black dirt will start to come out of the injectors.

this is in the air intake snorkel on some and mounted in the intake manifold on some. it has an electrical plug attached to it with 4 wires I think connected to it.

most likely the boxes are relays. have had the battery/ charging system checked lately. a weak or dead cell will cause the problems you are having.

id say either take the intake manifold off or take some of the bolts out so u can drop the motor down. good luck :)

maybe you can get to them from under the car. or you can reach back. Alot of cars give very little room and its a feel thing to get to them. If you still cant reach them then the intake will need to be removed.

I am assuming you have the 3.0L Duratec engine. Although the job seems daunting, it's actually easy to remove the upper half of the intake manifold plenum. This took me about 40 minutes to remove the first time I did it, and leaves the rear three spark plugs wide open.

A good repair manual such as the Chilton's manual for the 1996-2005 Ford Taurus has the step-by-step. You should get a new set of intake plenum seals (from Ford or most auto parts stores, which may have to special order them) along with the spark plugs. The seals are a set oval rings made of silicone rubber. Yours may not need them but if you damage one getting the plenum off, or if they have shrunk with age, you'll be glad you got them. They're about $16 a set.

if i know what you are asking, look at where you put your oil in. on the valve cover to the top right should be a plug with a tubeing runs to your air clear tube where the air mass sensor and carb is located. i think that is what you are looking for.