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My 02 taurus is overheating. We've changed the radiator, thermostat, water pump, radiator hoses, fan, radiator cap, & heater core. It does fine for short trips but after 30 mins or so the temperature gauge starts to rise. Once the temperature goes up the water spills from radiator when car stops. No water or smoke from exhaust though... Please any suggestions?
 

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Sounds like you changed out all the majors. There is also the bypass that has been known to get rusted and restrict water flow. Don't overlook electrical sensors also. I best leave the electrical sensor idea to others that can point out the right ones to check. Did you double check that the themostat is working correct.
 

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Do the fans turn on when it gets hot? Do they turn on with the AC? Does the temperature gauge indicate overheating? I would suggest a compression test to see if you have a failed head gasket or there is a test kit that you use to see if there is exhaust gas in your degas bottle. Also your degas bottle cap may be faulty, is it a Dorman brand. Maybe Autozone has a cap test kit.
 

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I would check for head gasket leak. I know you said no smoke from exhaust but pay attention to the first startup after it's come back from a drive. Maybe start by pulling the spark plugs to see if there's any sign of fouling from burning coolant. When did the overheating start, was it before any of the work you described and were there any other issues leading up to it?
 

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Discussion Starter #5
Sounds like you changed out all the majors. There is also the bypass that has been known to get rusted and restrict water flow. Don't overlook electrical sensors also. I best leave the electrical sensor idea to others that can point out the right ones to check. Did you double check that the themostat is working correct.
Hubby put in a brand new thermostat. So I know he checked his work after. Thanks
 

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Discussion Starter #6
I would check for head gasket leak. I know you said no smoke from exhaust but pay attention to the first startup after it's come back from a drive. Maybe start by pulling the spark plugs to see if there's any sign of fouling from burning coolant. When did the overheating start, was it before any of the work you described and were there any other issues leading up to it?
It was parked for a while before I got it. Used it about a week then overheating began. So we started the elimination process changing parts.
 

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Test the coolant for combustion gasses, verify thecorrect degas bottle pressure cap and it's functionality. As was asked above, are the fans coming on when the a/c compressor is on?
 

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My 02 taurus is overheating. We've changed the radiator, thermostat, water pump, radiator hoses, fan, radiator cap, & heater core. It does fine for short trips but after 30 mins or so the temperature gauge starts to rise. Once the temperature goes up the water spills from radiator when car stops. No water or smoke from exhaust though... Please any suggestions?
Check timing it might have a jumped teeth
 

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Hubby put in a brand new thermostat. So I know he checked his work after. Thanks
Given all the new parts that have already tried on this vehicle, I would go back to the basics with first try running the engine without a thermostat. No guarantee that a new thermostat is good. It's known to have happened.
 

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Given all the new parts that have already tried on this vehicle, I would go back to the basics with first try running the engine without a thermostat. No guarantee that a new thermostat is good. It's known to have happened.
Ok. Will give that a try. Thanks
 

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As unlikely as it may seem the lower radiator hose could be going soft and collapsing at higher speed restricting coolant flow in radiator.
 
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