Overheating

Asked by Jan 28, 2016 at 07:03 PM about the 2003 Ford Expedition Eddie Bauer

Question type: Maintenance & Repair

I have a 03 expedition eddie bauer 5.4 engine it did not
have a thermostat in it so when i put antifreeze i also pit a
thermostat in it well i hadnt had any problems with
overheating or anything before it ran great but soon as i
put the thermostat in it started to run hot and shke so now
I took the thermostat back out and well the the shaking
seemed to cease but it still shake a little bit . Any ideas ?
All oil and coolant levels are fine

5 Answers

37,975

When you put the thermostat in the cooling system needs to be purged from air pockets while refilling.

1 out of 1 people think this is helpful.
4,095

Put the thermostat back in (make sure it is in the correct orientation) and purge the air from the system as "Rowefast" suggests.

Thanks i will give it another shot

How do u purge it? Is there a valve or a special tool? Bare with me please i kno very little about car lol

37,975

Ok so you have the thermostat in correctly? Fill radiator with 50/50 mix coolant. Leave the radiator cap off and the heater settings on hot. Start the engine and let it warm up to operating temperature. The coolant may spill out the radiator at first until the thermostat opens, then you will see the coolant level in the radiator go down, when it does fill with coolant again. Keep the motor running and the cap off and let the thermostat open and close a few times adding coolant as necessary. You will notice circulation each time the thermostat opens. When satisfied that it is full then put the radiator cap back on, then you can turn the vehicle off.

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