What is the fuel pressure for a 5.4 L ford expedition engine

Yes, that is high. Might need a fuel pressure regulator, or Ford calls them modulators. Specs for the 5.4 are 35 psi +/- 5

Do you know where is the fuel pressure regulator located on the truck?

35 psi +/-. You are way too high.

^ that is bso the pressure is 62-71 psi koer with a pressure of 62psi koeo

What type of gas does a v8 5.8 liter in a 2005 ford expedition with a tredtion v8

Normal regular unleaded. You could use premium if you want to spend the money but you won't get enough gain for the buck to be worth it.

I been having problems with speed everytime i press on the gas my 2000 Ford expedition xlt acts like its choking on something. What could be wrong it only runs about 25 35 the most

change the coils a all of must be a matched set and change all of the fuel injectors and it will run great

That is over kill! First, what is the milage? If it over 100k then plugs for sure. I would only replace coilpacks as necessary. At $60 each replacing all 8 gets pricy. I good quality plugs would only run $50 and if you're not going to keep it for another 100k they will be fine.

Check injectors, mine was stumbling on hard xcel, changed injectors running fine now also check coil packs and fuel filter, don’t lose the tiny o rings on the injectors , they might stay in the manifold when you pull the old injectors

I have a 2005 F250 5.4 having a problem with it "b0gging down" and pinging under acceleration. Plugs have less than 15,000 miles on them, I just replaced the coils with new motorcraft coils, and injectors. It's driving me crazy. I have a snap on MODIS scanner and all the pids look good.

I’m having the same issue, have replaced cam phasers , plugs, cops, fuel driver module, throttle body, tps, catylic converters and still haven’t fixed it.

Change o2 sensors I just did in my 05 ford 5.4 Triton 3v runs great now

use mid grade gas to stop pinging

I have 07 ford Econoline e350 5.4 replace fuel pump .. but it crank over does not start. check pressure 60 psi cranking .. I think its high

What is the fuel pressure in a ford van E350 2013 I have 75 psi

I have a 99Expediition with the 5.4. I has recently started stumbling like a lying child. I have replaced the IAS but it made no difference. Will be cleaning the injectors, MAF sensor and wiring this week. I have been told to check the plugs which were installed last summer. I will save that hellish job as a last resort. I'd rather shine the devils shoes than ***k with those plugs. Engine was replaced with a reman last year.