How to Adjust the Headlights on a 98 Ford Mercury Grand Marquis?

Answer The 1998 Mercury Grand Marquis features headlights with adjustment screws from the low and high beams. These adjustment screws are readily visible on the rear of the headlight body. For this reason... Read More »

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How to Adjust Headlights on a Mercury Grand Marquis?

Proper headlight adjustment is essential for safe night driving. If your Grand Marquis' headlights are out of alignment, you will notice a dramatic reduction in nighttime visibility. This, in turn,... Read More »

How to Adjust the Windshield Wipers on a Mercury Grand Marquis?

If the windshield wipers on your Mercury Grand Marquis are not doing their job properly, it becomes not only a question of aesthetics but a safety issue. Sometimes the windshield wipers can get mis... Read More »

How to Adjust the Idle Speed on a 1981 Mercury Grand Marquis?

The idle speed in a 1981 Mercury Grand Marquis is the rate of engine RPMs when the throttle is at rest. If the idle speed is set to low, the Grand Marquis's engine can stumble and stall. If the id... Read More »

How to Troubleshoot the Air Suspension on a Ford/Mercury Grand Marquis?

The air ride suspension on a Mercury Grand Marquis gives the vehicle a remarkably smooth ride. Standard shocks are enhanced with air bags, similar to the style used in large tractor trailers. The s... Read More »