Improvements also have been made to the Grand Marquis' four-wheel diskanti-lock brake system (ABS). Electronic Brakeforce Distribution (EBD) now isused to dynamically proportion braking forces front to rear. EBD effectivelyraises the threshold for ABS engagement by optimizing front-to-rear brakebias.
In addition, a new dual-rate brake booster with "panic assist" suppliesfull braking power even if the driver doesn't apply enough pedal pressure toengage the standard anti-lock braking system.
Powertrain
The standard Grand Marquis engine is the 4.6-litre SOHC V-8 engine, whichproduces 220 horsepower at 4,750 rpm and 265 lb.-ft. of torque at 4,000 rpm.The Grand Marquis LSE features the same engine, but it is fitted with dualexhaust, which increases horsepower to 235 at 4,750 rpm and torque to 275 lb.-ft. at 4,000 rpm.
All Grand Marquis models use an electronically controlled four-speedautomatic overdrive transmission. A 2.73:1 axle for good fuel economy isstandard. The LSE uses a 3.27:1 axle for improved performance feel off theline. All-speed traction control, which uses the ABS system and throttleintervention to manage wheelspin, is standard on all models.
A number of improvements have been made to the Grand Marquis' provenpowertrain to reduce emissions, fuel consumption and engine wear. - A new electronic returnless fuel system reduces evaporative emissions. - A larger close-coupled catalyst system and revised exhaust manifoldreduce tailpipe emissions. - A new engine knock sensor allows the engine computer to set the optimumspark advance for operating conditions. - A 20 percent larger, 5.7 L (six-quart) oil pan extends the life ofengine oil.
