Standard 17-inch wheels are installed, and 16-inch wheels are optional. Lightweight hydroformed steel sections are used for the front rails of the full-perimeter frame. With optional side airbags installed, the sedan has also earned five stars in side-impact testing. The Palm Beach luxury package for the LS carries on into 2008.Īccording to Ford, every Grand Marquis since 1996 has earned five-star ratings for the driver and front passenger in frontal-impact crash tests conducted by the National Highway Traffic Safety Administration. LS sedans include an overhead console with a compass, map light and universal garage-door opener. Two Grand Marquis trim levels are available: GS and LS. Little has changed for 2008 beyond the tweaking of a few option packages. The Grand Marquis’ 4.6-liter V-8 produces 224 horsepower and can run on E85 ethanol. Their sister vehicle, the Ford Crown Victoria, is now only sold to fleets. with V-8 engines and traditional body-on-frame construction. Honda calls it the Canister Vent Shut Valve.Mercury’s Grand Marquis and Lincoln’s Town Car are the only six-passenger rear-wheel-drive sedans sold in the U.S. It's normally open, which means it should be open with no voltage and closed when the voltage is applied.Īs an example, let's test the vent valve in this 2000 Honda Accord. In most cars, the vent valve is a simple solenoid valve. We have posted a list of websites offering paid access to service manuals for different cars at the bottom of this article. You can find the proper testing procedure in the vehicle's service manual. The vent valve design and setup varies between different manufacturers. A clogged up vent valve can cause trouble filling the gas tank. The repair includes vent valve replacement and some modification of the vent valve setup. Some GM trucks are known to have this problem which causes the code P0466. This will also trigger the Check Engine light. In some Mazda 3 and Mazda 5 vehicles, a leaking vent valve is a common culprit of the code P0442.Īnother issue is that some dirt and dust could be drawn into the vent valve through the vent hose and cause it to clog up.
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