Question about Ford Cars & Trucks
1998 Explorer V8 5.0 L XLT AWD
When running the engine to bleed air was the cap on the rad fill hole? It should be so the coolant system builds up the required pressure, may have to repeat this process a couple of times, after engine has cooled,the expansion bottle is the better place to refill the coolant
Posted on Jan 12, 2019
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Posted on Jan 02, 2017
there should be a bleeder valve on the thermostat housing open bleeder until coolant comes out with no air and tighten top off coolant to mark on coolant jug
Posted on Oct 09, 2008
You may need to ask AAA to put a radiator pressure tester on the resevoir bottle and pump it up to operating pressure(Pressure cap rating) and see if it over pressurises while it is running at operating temp,rev engine up and down and watch what the testers pressure readings do,it should move up and down in sync with the water pump.If the pressure keeps building i would have to believe that combustion chamber gases are over pressurising your cooling system.Also test the pressure cap is functioning within factory specs.
Posted on Oct 30, 2008
Perform a liquid block test (with the bottle of fluid over the radiator mouth.) If the blue liquid turns yellow or clear, you have hydrocarbons entering the cooling system (usually via head gskt.) If not, you have ruled out a costly repair.
Sounds like it overheats pretty easily, without t-stat! This block testing liquid is cheap, and will verify a suspected leaking head gasket without lengthy diagnosis. Hope it's better news, but good luck!
Posted on Jan 28, 2009
In my experience with Audis, after any job requiring changing/draining the coolant the car ideally needs to be driven. With the coolant topped up to max drive the car, keep the revs up and shake the car with steering and over bumps where possible. Whatever you do make sure you take at least 2 litres of water/coolant with you, as as soon as the air lock goes, the level drops a lot and quickly. Also keep an eye on the temp gauge and avoid letting it go much over 90 degrees (over 90 on the gauge usually means its well into the hundreds) When you get consistant hot air through the heater, at idle, the level should of settled. If this doesnt work you may have thermostat issues or a blockage. Good luck, let me know how you get on.
Posted on Mar 26, 2009
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