Q: Front AC was not blowing cold on a 2003 expedition 4.6l. I changed the expansion valve and now it overheats. Changed Fan, water pu

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I changed front expansion valve because Front AC was not blowing cold even though rear was fine. Now it overheats. I have changed the water pump, fan clutch and thermostat.

My car has 167000 miles.
My car has an automatic transmission.

Hi there. Typically the AC system has nothing to do with the coolant system on a vehicle, so it’s likely that your overheating problem is not related to the recent expansion valve replacement. It would probably be a good idea to have a professional mechanic complete an overheating inspection to isolate the root source of this problem so they can recommend the right repairs.

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