Following similar paths mapped the end by the all-new "02 Explorer, the Ford Expedition appears bigger, stronger, faster, and probably much safer than the automobile it replaces. Certainly, the modern technology is impressive. Engine mods, suspension engineering, human body building, framework strengthening, four-wheel-drive upgrades, enhanced towing capacities, and industry-first interior tricks all include up to one of the most thorough makeovers we"ve checked out to date.
You are watching: 2003 ford expedition engine 4.6l v8
Suspension/axles A brand-new hydroformed framework is an ext than 70 percent stiffer than the ahead platform. This bonus enables engineers an ext precision in tuning the framework for far better compatibility v specially designed suspension components, crossmembers, and body mounts. Most likely the most distinctive feature to this exploration is the use of one independent rear suspension, comparable in structure to that on the new Explorer, yet with a slim difference. To enable the Expedition much more rear-wheel travel during uneven road surfaces (potholes, rocks, etc. ), Ford engineers designed an oval portal v the frame, rather than the round hole the the Explorer, to carry out for much more up and down flexibility. The advantages of IRS include much better on-road ride and handling, less weight, and also greater center-differential soil clearance, however are periodically thought come be less durable. Ford appears to have compensated because that this by giving the expedition with two of the biggest ring-and-pinion size in its course for both engine options (8.8 in. With the 4.6L V-8; 9.8 in. With the 5.4L V-8), and providing because that an ultra-stiff, oversize, cast-aluminum rear-differential covering to help fight driveline flex and also whine. Standard cast aluminum upper and lower control arms hold the wheels, while a selection of coil-over or airbag-suspension equipment damp the jounce. The air-springs option provides an automatically lowering (at highway speeds and in Park) and raising setup (when in 4x4 low range) whereby appropriate.
Engines although these two engine sizes were available with the introduction of the Ford expedition in "98, both have been refined and improved to border noise, vibration, and also lost horsepower. The 4.6L SOHC V-8 has had actually the most changes, including an all-new aluminum block, brand-new mounts, considerable use the composites, and a metal-plastic oil pan to additional reduce vibration. The 5.4L uses an all-new computer-designed cast-iron block and also numerous other upgrades specifically designed to, likewise, limit noise and also vibration. Both engines have actually torque ratings number of hundred rpm lower and also offer much better fuel-economy numbers 보다 the ahead V-8s. This powerplants will continue to rely on the 4R70W four-speed automatic transmissions that currently benefits from a more powerful computer, able come read and also predict work-related load and compensate wherein needed.
4WD system Ford"s new Control Trac transfer situation (a Borg-Warner 44-16) still permits for all-wheel drive, four-wheel-drive high range, and also four-wheel-drive low range, but a new two-wheel-drive mode has been reintroduced. Benefits include decreased driveline wear, boosted fuel economy, and it provides the driver one an ext choice. The 2WD setup is made possible because of a brand-new vacuum-operated axle disconnect in between the half-shafts and wheel hubs, permitting free-wheeling once disengaged and also front drive once engaged. In four-wheel journey (AWD or 4x4), the brand-new transfer instance reads wheel on slide much quicker than the previous system and also is capable of offering faster, much more seamless traction to a given tire. In addition, Ford"s stability-control program, called AdvanceTrac, is smart sufficient to help prevent a automobile from danger over- and understeer situations. Further, AdvanceTrac have the right to learn and predict events by using various sensors, combined with current driving history. We"re told the can figure out when we want plenty of wheel speed throughout dune-running or turning on snow and not reduced power to the engine via the engine-management controls. Regardless, we are encouraged that Ford has had a dash-mounted engine-management cutoff switch.
Safety Always critical issue, however increasingly so lately, Ford has actually placed a high priority on emerging safety modern technologies that no only safeguard the occupant inside its vehicles, but additionally in technologies that could likewise benefit accident victims in one more vehicle. The brand-new Expedition, favor the Ford Explorer prior to it, provides specifically designed structure sections under the prior bumper come help administer a better, more carlike bumper height. Inside, a front- and also rear-seat head-canopy airbag device protects passenger from both high- and also slow-speed accidents and rollovers. Likewise, the front-passenger airbag offers dual-stage deployment, depending upon how serious the guess (in milli-seconds) collision will certainly be. Finally, all explorations have tire-monitoring devices, situated inside the tires to straight measure pressure, that suggest when pressures space up or under an inappropriate amount.
See more: Group Of Eagles Is Called A Flame, Animal Group Terminology
Towing simply as the IRS do the fold-flat third-row seat possible, the hydroformed frame and also heavy-duty IRS proves quite beneficial for towing and also payload strength. Since of the reinforced rearend pieces and also the stiffened frame, Ford expeditions now have a maximum towing volume of 8900 lb--up more than 500 lb from last year. Likewise, gross car weight and payload are up together well. Interestingly, cargo capacity stays the very same at 110.7 cu ft of useable space behind the front-row seats. This is identical to the previous exploration cargo capacity, yet now there"s a third-row-seat option. Something when heavy and also awkward to download or save is now invisible. Likewise worth noting, Ford has offered the "03 expedition the largest brakes of any kind of SUV around, including its own Excursion: 13.0-in. Vented discs in front and also massive 13.5-in. Discs in back.
Finals With plenty of impressive extr parts and pieces, the new Expedition looks hugely improved over the last model, and it appears to do well (see sidebar). Ford had high really hopes for the explorer when the went with its transformation, and also even through the problem in the previous 18 months, it was still the largest-selling SUV sold in the U.S.--by a broad margin. We"re guessing Ford is expecting an ext things from its bigger brother. V the Escape, Explorer, and Expedition to run on IRS technology, it"s clear it desires to be the "ride & handling" majesties on the SUV side of the market. We"ll see. There"s an ext to life 보다 pavement and also darting come the mall. We"ll clear know much more when we obtain some weight behind the (and in it) and also see exactly how it responds. Continue to be tuned. TT
Smooth ride, sporty handling, and also full-size utility precise handling isn"t what we intend in a 5686-lb truck, even if the did get an all-new independent rear suspension. Yet Ford chassis engineers insist the it"s a nice point to uncover on a curvy mountain road or freeway-lane change that"s forced unexpectedly. We invested a work driving the all-new exploration on- and also off-road and came far impressed the Ford not just drove dealing with precision right into its from-scratch chassis, but additionally eliminated lot of the shake and shudder typical of full-frame vehicles on wavy road surfaces. Indeed, we"re hoping several of this engineered plushness finds its method over into the too-taut "02 Explorer and also Mercury Mountaineer. Hydraulic mounts for the 4.6 and 5.4L SOHC V-8s smooth the power pulses and much better isolate these engines native the frame and also body. Infection calibration occupational has also polished the move to Town auto quality levels. All these tweaks dial increase the premium ambience in Ford"s large new sport/utility. Inside, the driver next dash has actually a cockpit feel through white lettering on all the black-on-black controls. The chair cushions space significantly much more comfortable with enough handy lateral assistance for bending a corner. Also the grasp cylinder"s to be fine-tuned for nice an exact metering the the brake pedal because that smoother stops. The one let-down within is the plain-Jane face of the tool cluster, i beg your pardon would definitely be an ext at residence in a stripped-down F-150 work truck, and we"d favor a hint much more steering rise at cruise speeds.--Jack Keebler