Question about 1999 Ford Expedition
Find your evaporator canister which will be toward the firewall. The low port is hard to see. You will need to buy yourself a re-fill kit which comes with the freon and gauge. Warm the engine and turn air cond. on. Attach the hose to your low port. Attach the can to the hose and turn the needle to pierce the top of the can. Be sure to turn the valve needle slowly to release the freon into the system. If the can starts to frost over, wrap a warm cloth around can to get the freon to flow easier. The kit will come with a gauge which will tell you if the system is already overcharged with problems or if the system needs freon. The one I have has yellow, blue, green, and red. The yellow is low, blue is good but the system could still use more depending on the psi, green is overcharged, and red is over charged with system problems, or other system problem.
Posted on Jul 05, 2010
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Posted on Jan 02, 2017
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