Over heating

Asked by Jun 09, 2017 at 06:30 AM about the 2003 Ford Explorer XLT V6

Question type: Maintenance & Repair

Replaced thermostat and housing truck still runs
hot after a few miles. Cold water leaking from
radiator

12 Answers

79,265

Well the leak needs to be taken care of, fixed, but was the cooling system purged from the air pockets after refilling? If not, here is a video on how to purge the cooling system. The only thing with this video is put the radiator cap back on when your done topping it off with the engine running. https://www.youtube.com/watch?v=xeTgmdRkQtY

1 of 1 people found this helpful.

Tried that already.

Heads or gasket not bad either. Could the radiator be clogged or a bad thermostat

79,265

Or the water pump impeller could be eroded away, needing a new water pump.

Talked to a mechanic he says it's probably the head gasket but there no water in oil. Engine runs good just over heats fast.

79,265

You would have noticed a loss of coolant, like you say, coolant in the oil, or it would be going out the tail pipe. You would notice white smoke with a sweet smell from the exhaust. A compression test would show some low cylinders if it were a head gasket. If you are not loosing any coolant, I would pull the water pump and check the impeller.

I have a Crack in my intake and cold water leaking from the radiator.

My exhaust smells like gas need new Or sensors which I already knew but no smoke and no coolant smell water pump it is

79,265

Need to fix the intake crack and check the water pump.

1 of 1 people found this helpful.

Thanks man I believe your right.

have an 05 explorer 4.6 took thermostat out done good for a few days started overheating again changed fan ran good for about a month now its overheating again checked head gaskets not blown what to next

Took thermostat out drove fine till I almost got home started rattling really loud and wouldn't run. Started back up this morning but rattling really loud.

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