Changed water pump, thermostat also thermostat housing wit o-ring and flushed, been fine for acouple days no long trips , now the temp light comes on after 20mins , the fans work,and i got coolant in it
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If this problem sudenly happened? Its unlikely to be the radiator as it won`t sudenly block up.Also not likely to be water pump (unless its leaking, but that is something you would see) If your car has been runing at normal temp thermostat is ok.So i think the sender on the thermostat housing should be replaced and its an easy job to do.
The only other times when i have seen this problem is head gasket fault when the cooling system gets air in it and that air ends up in themostat housing so no coolant covering sender therefore giving a different reading
I hope i have been of some help to you
Remove the thermostat cover bolts from the thermostat housing.
Remove and discard the thermostat housing O-ring.
Twist the water feed pipe while pulling to remove it from the water pump. Remove the water pipe from the water pump assembly.
Remove and discard the seals from the water pipe.
Remove the inner thermostat sleeve.
Remove the thermostat assembly.
Install the thermostat cartridge into the thermostat housing while aligning the cartridge tangs up with the thermostat housing bolt holes. This will assure the inner sleeve can be completely installed.
Align and insert the inner sleeve notch into the thermostat housing. If the inner sleeve notch is not properly positioned, the sleeve will not completely seat into the housing.
The water feed pipe seals can be slightly lubricated with silicone gel to aid during installation. Install a new O-ring on the water pipe.
Position the water pipe into the water pump assembly.
Seat the water feed O-ring by pushing and twisting toward the water pump. Take care not to tear or damage the O-ring.
Install the thermostat housing cover to the water pipe. The water feed pipe has a locating tab to assure proper alignment.
Install a new thermostat housing cover seal into the recess groove.
Position the thermostat housing cover into position.
Install the thermostat housing cover bolts and tighten bolts to (89 in-lb 10 Nm).
make sure that the system has been bled of all the air to do this there should be a little bleeder screw near the thermostat housing open this up until water comes out start the car and turn the heater on high watch for any air bubbles to come out of the bleeder until it is straight fluid coming out see if this fixes it, also check the radiator cap this could cause overheating too, if this is all fine check the fan switches to make sure they come on at right temperature.
i remember trying this. if your water pump is faulty. while the engine is off, spin the radiator blade. if it spins, then your pump is out, if it stops immediately, (it has a cluth of sorts) it's ok. also use a lower degree thermostat, like 160 degrees, then it will open sooner.
with the fan kicking on normally that means that the coolant temp sensor is functioning fine, it sends a signal to the ecm to turn the fans on and off. have you had the coolant flushed lately? if so there could be an air bubble in there that needs bled out, a bad radiator cap, make sure coolant is at proper level, and is flowing and that both the upper and lower radiator hoses are getting equally warm, if not water pump may not be pumping, make sure that the serpentine belt is tight enough with no oil leaking on it making it slip. if all that is check you need to look at the gauge,and if the fans always kick on when the temp raises and then off when temp lowers. locate the temp sensor normally on the intake manifold on those, some i have found on top of thermostat housing and unplug and see what gauge does. maybe just bad gauge. is car running any different or is it running fine? hope something here helps, just let me know.
You should be able to remove the tube without removing the water pump again. If a new tube is not availabe you can use JB weld to fill gaps and pit holes. Make sure its not the intake manifold gasket that's leaking at the corner.