Ford Expedition Engine and Performance Problems

2 messages, Last post on Sep 03, 2008 at 6:33 PM

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What is this discussion about? Ford Expedition, SUV

#1 of 2 POWER!!!! by grntd Jun 29, 2008 (4:27 pm)
I own a 2005 Ford Expedition and as the engine revs up when im pushing it, there seems to be a valley in the powerband, it stays strong down low until around 4000rpm, and then there is this sudden boast in power around 5000rpm, but then suddenly the transmission shifts and then the cycle restarts. Why would the power kind of just go away in that 1000rpm range. It confuses me as to why the Ford engineers whould set the reline so low on this engine. They sould have pulled much more available power out of this 5.4 liter V8. Is there any mods I could install to overcome this annoyance? Thank You
#2 of 2 expected mileage????? by tyrip Sep 03, 2008 (6:33 pm)
i have a 97 ford expedition 4.6L&4x4- at 145000 mi.....how many more miles can i expect to get from this engine.....and also is this engine equivalent to the Lincoln Town Car?????