Question about 2011 Ford Ranger
Sounds like the thermostat is broken or stuck open. If the thermostat is good it is possible the the engine coolant temp sensor is bad.
Posted on Oct 23, 2013
Testimonial: "Tod, would you replace the thermostat first then the sensor?"
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Posted on Jan 02, 2017
this is the problem with code readers they bwill tell you the code and sometimes even have a reset feature. However they do not tell you the parameters and don't have an drivability feature so you can not test the ecm and all the sensors or modules while engine is running. diagnostic scan tools are very expensive and hard to use unless you have been trained to do so and PEP BOYs is not what I call real reliable mechanics to begin with. Now I concure with toddG on his reasoning in what might be the potential fault. if your vehicle is running rich or lean your O2 sensor will pick this up on the exaust side, however it is not the sole sensor responsible for the ecm adjusting the fuel air mixture.. you stated that you have switched out several o2 sensors and the fuel pressure regulator, but there is also you mass air flow sensor, your TPS sensor, as well as your map sensor these are worth checking out and just because a faulty sensor is the problem doesn't mean you will get a code each time. the system is built with redundancy in order to keep the vehicle running. in order to get the best possible diagnois take it to a shop where they have a full diagnostic scanner this will have not only OBD1 and OBD2 but cam protocol as well. while the tech is scanning the vehicle he will be able to see how the engine is performing under realtime conditions. please rate this as well as change the rating for toddg because he did offer a valid suggestion
Posted on Oct 02, 2008
SOURCE: 92 Mustang Engine WIll Not Heat
reggie, living in the uk, i having never worked on a mustang, but have found this problem on many cars, two thing i can mention here, 1st is the heater matrix (small radiator thingy usually located in front of the fan behind the dashboard)being blocked by limescale or 2nd the stem of your warm cold dial no longer keying with the valve that changes from cold to hot. Since the themostat problem has been address try looking closer at these 2
Posted on Oct 24, 2008
this is whats going on insufficient warm up time / low engine coolant /check coolant/ leaking or stuck thermostat or faulty tep sensor
Posted on Jan 25, 2009
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
Make sure you replaced the right one there are two sensor's for the coolant, one takes coolant temp and the other one runs the fans for the radiator. Both are located on drivers side of the block. 2 wire leads on each how ever both are different in sending readings to the computer.Both look just alike also. Just make sure you replaced the right one. Or replace both.
Posted on Sep 15, 2009
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