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When the air conditioner in your 2009 Mercury Grand Marquis starts blowing hot air, you likely have a freon leak. Recharging the freon in your AC system is an inexpensive and easy first step to restoring the cooling capacity of your A/C system. Most refrigerants include a leak sealer that will seal small leaks in addition to filling the R134a refrigerant. The A/C system in your Grand Marquis consists of a compressor that is belt-driven, an evaporator and freon. If there is a problem with your compressor or evaporator, adding freon will not restore cooling. How to add freon to your 2009 Mercury Grand Marquis: hook up the can of refrigerant (likely r-134a) to the low pressure port. When your compressor kicks on, add freon to the correct pressure. In addition to cooling, freon lubricates the compressor when it runs.
If your brake fluid is a little low, learn how to add some here. Ignoring a low level leads to big problems2009 Mercury Grand Marquis LS 4.6L V8 FlexFuel
A few key tips will make jacking up your car much safer2009 Mercury Grand Marquis LS 4.6L V8 FlexFuel
On many cars, the high beam bulb runs at reduced power during the day - check 'em and change 'em!2009 Mercury Grand Marquis LS 4.6L V8 FlexFuel
Power steering fluid is easy to check and many people (mechanics included) often forget about - learn how here2009 Mercury Grand Marquis LS 4.6L V8 FlexFuel
Help keep your car as responsive as you are by maintaining proper power steering fluid levels2009 Mercury Grand Marquis LS 4.6L V8 FlexFuel
Cars burn, leak and otherwise dispense of their oil. Check your level frequently and top up when necessary2009 Mercury Grand Marquis LS 4.6L V8 FlexFuel