2000 ford excursion v10 driving down the road

run fault codes
indicate ambient temp sensor , maf,vaf or engine coolant temp sensor problems

Sounds like a bad connection somewhere.
When you get it started, is the alternator charging the battery ?
Do you have 12 or 13 volts at the starter when it will not crank without a jump ?

Him trying to put the batterie cables on the batterie to charge it because it's dead but at same time the horn goes on then I take the cable off the the batterie it shuts off nd I wanna know where is the fuse at to remove it but my fuse box dnt have a cover on it so I cant tell which fuse it is

Fuel pressure for your 2000 Excursion is 35-45psi with key on and engine off, with engine running the fuel pressure should be 28-45psi

Just had the same problem-- I found that the solinoid that mounts on the right side of the fender next to the battery-- a $25.00 standard solonoid --at auto zone-- worked intermitenly-- now it starts -- 100 Percent of the time-- I just luckily found it by placing a 12 volt probe liight on it and sitting at the key with the hood open and watching --

dead sort in system wires to rear also check trailer bug in at rear bad for corrosion
there is a spliter jointer at the rear that splits power to both tail lights

Does your keys look different? Some keys require a sensored key to start it up.

1 Ignition system not operating properly
2 Dirtyor clogged fuel injector(s).
3 Low fuel pressure. Check for proper operation of the fuel pump and for restrictions in the fuel filter and lines.
4 Fuel injectionor engine control systems malfunction.
5 Vacuum leak at the intake manifold or vacuum hoses.
6 Restricted air filter.
7 Fuel pump or pressure regulator defective.

You have a door adjar light sticking in one of the doors or deck lid.
Take you a can of WD40 open each door and spray it into the latch on the on the side of the doors then open and close it a few times,this will take car of the problem most of the time. Start with the driver door first it is usually the one.

i have a 201 ford excursion for about 2 weeks i could not get it to start in the mornings it was hesitant and would take about 4 tries before it would start. i took it to the dealer and they said the battery was fine i ended up changing all the spark plugs and ignition coils and now the car wont start at all.. please help if anyone knows what it could possibly be.