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Posted on Jan 02, 2017
the open pipe that you took the hose off of is the thermostat housing, you will need to remove this to reveal the thermostat, make sure you use a new gasket with sealant when reinstalling thermostat housing to prevent leaks and dont over tighten the bolts,run both bolts down as far as you can before final tightning
Posted on Dec 26, 2008
SOURCE: ford ranger truck overheating
I have had this happen with my ranger. Changed everything I could to try to fix the over heating. It turned out that I had a small leak in my head gasket and it was allowing exsaust gas to go into the cooling system witch was over pressurizing it. Also the air from the exsaust will heat up much faster than liquid making your thermostat to read hot and will not be able to blow hot air in the cab because there is no liquid going to the heater core. This happened to me when my blet came off and I tryed to make it home. If you had it over heat for a long peirod of time it may have ripped the head gasket.
Posted on Feb 21, 2009
Let the engine cooldown,then open the bleed screw on on the thermostat house,do not remove just loosen----fill water in the radiator bottle slowly and watch for water coming out of the bleed screw----
sometimes the bleed screw is blocked due to anti-freeze-then take the screw off completely ,clean and replace----always make sure the engine is cool
Posted on Jun 15, 2009
A couple of things to check because as you describe your symptoms you actually have 2 problems
1. No heat from vents.
Sounds like the heater water flow valve cable is kinked disconnected or the valve itself is stuck You will need to follow your heater core water supply lines to find the valve usually to the right of the center console in the ducting area / large plastic housing for heater and AC internal coils. If the valve works then there is a possibility that the heater core water supply lines have been bypassed on the engine side of the firewall with a coupling due to a leaking heater core. And l;astly the heater core could just be clogged. (quite rare!!)
As for the overheating engine after all of the work you have done.. Perform this simple test.
1. remove radiator cap
2. have someone else start the car
3. watch for water coming out of the open radiator cap area DURING start...
4. have person in the car rev engine gently 2 or 3 times. No need to exceed 2000 RPM. If water rapidly flows out of the radiator during engine revs.. you have some major engine issues.
If it passes all of these checks then the only thing left is improper hose connections on the engine side of the firewall and or a hydraulic water lock in the block that should clear itself by starting and stopping the engine many times with the radiator cap off.
Posted on Jan 27, 2010
check to make sure fans are working for radiator. if not check coolant tempurature sensor, fuses, and relay. is all air out of coolant system!
Posted on Jul 07, 2010
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