My 1996 ford windstar temperature gauge shows overheating
Coolant level is fine, heater on will bring the gauge down slightly but air is mostly cold. the engine has not actually overheated the gauge just keeps saying it is, no warning lights have come on. What is the problem?
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You have trapped air in the cooling system, purge the air out of the system. You can do this by raising the car front end as high as possible and filling the coolant recovery tank to the brim leave the cap off, then run engine until it reaches operating temperature, then shut it down and run cold water over the radiator core, the coolant tank will be sucked dry most likely as the air is purged and replaced by coolant.
Sounds like the water pump is cavitating . Replace water pump. Check coolant level also. Open the bleeder valve usually located on thermostat housing to remove air from system. close valve when coolant is present while filling. close radiator cap and top off recovery bottle to correct level. These engines are prone to overheating, do not let temp gauge get in the red.
The valve to the heater core is not opening. It is located in the heater hose by the firewall it is vaccume operated the hose is of or the diaphram in it has failed you can operate it by hand and see if you get heat.
first make sure your coolant is full. if it is then you could have temperature switch or sensor bad,not the temperature sensor for the motor though(not the one for your temperature gauge in other words).
first check coolant level in radiator coolant level sound low.if coolant overflow jug empty.coolant sysyem low, when add coolant to coolant overflow jug coolant level should stay at full cold mark.if coolant level okay,engine overheat while sitting or moving in slow traffic either coolant fan relay or fuse could be bad.or engine coolant temperature sensor could be bad. coolant sensor turn on cooling fan at certain temperature.hot wire check to make sure cooling fan motor not bad or short in wires.if all is good have pcm check it controls fan relay to through the coolant temperature sensor signal when coolant get hot.
You probably have air in the system. Take off the radiator cap and start the engine. Turn the heater on hot. Let it warm up and fill the radiator as the level drops. Make sure the thermostat opens and coolant is flowing in the radiator. Continue to add coolant until the level stops dropping. Also check for any bleed ports on the hoses or housings where they attach. If you see any bleed ports, crack them open and let any air out. Put the cap back on and see if the heater is working. If this doesn't work, please get back to me.
first, you need to check if you have coolant in the reservoir, if it is very low or none, then you need to top it up and bleed the system by undoing a hose clip, preferably a heater hose, and pull it away slightly so it starts to leak, you should see air come out, when its just coolant , refit and tighten the hose clip. run the engine and see if it blows hot. You should also check to see where the water leaks are and rectify them.
Hope this helps