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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i would think there is an air lock in the coolant system , have you run the engine whilst at stand still and opened the heater control to the hot position and leave to run for 10 mins or so , let cooldown then check coolant level
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
My 2005 Nissan Sentra 1.8s with 55,000 mi. blows cold air from the heater. Coolant not circulating in engine. Lower hose stays cool to touch. Both heater hoses cold. Changed thermostat - didn't fix it. Coolant not leaking or dirty. None in oil - no oil in radiator. Changed worn water pump belt - pump spins freely with no noise or resistance. Cooling fans come on after warm-up. Temperature gauge stays in normal range then jumps to hot and back again. Coolant good to 10 below - didn't freeze here yet. No other problems or repairs to car. Afraid to drive and make worse. Help!