I have a 2004 Lariat 4X2 w/ the 5.4L with approx 90Km (56miles). I don't know anything about its history other than 'no reported accidents' .. I was planning on doing some pm to it this fall and need some help deciding what needs done. I changed the oil, oil filter, and air filter when I got it and maintain them regularly.

This is what I plan to do ...

Plugs
Fuel Filter
Tranny Flush
Coolant Flush

what am I missing or is there anything on there I don't need yet??

Thanks

 

As you do not know the history, think about changing diff fluid, especially since Ford changed the specs since your vehicle was new. If LS do not forget the friction modifier. Change the brake fluid.

 

How would I know if its LS?

 

Check the driver's door Jamb and get the code off the sticker.

19 — 3.55 non-limited slip — F-150
25 — 4.10 non-limited slip — F-150
26 — 3.73 non-limited slip — F-150/Mark LT
27 — 3.31 non-limited slip — F-150
B5 — 4.10 limited slip — F-150
B6 — 3.73 limited slip — F-150/Mark LT
H9 — 3.55 limited slip — F-150
18 = 3.08 non-limited slip — F-150

 

Looks like B6 is the winner ... thanks for posting that chart.

 

also do a search on changing the plugs!!

 

Everything in my list except the fuel filter was going to get done at the dealership.

 

Thats cool... still do a quick search.. a lot of info on other's experience. Some plugs have broken off while being removed, even when done by dealer. You said you don't know the history, so you dont know if they have been changed or not.

 

I would say save yourself some $$ and do the coolant flush at home also. Dont let them rape you on the powersteering flush, unless you have some big meats on there it is unnessecary

 

Nope .. not sure if they have ever been changed. I did search about the plugs on here and read a lot. I was originally planning on changing them myself, but after all the posts I read I thought I better let the dealer do it, this time anyway.

As for the coolant. Is it as simple as disconnecting the inlet/outlet and putting a water hose to it? I know I read that somewhere but can't remember where.