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Originally Posted by TaMiYa_DrIfTeR
so o2 senosr is coolant temp sensor or is it different one?? my rodeo having the same probalem from where i see you say, black smoke and blah. my shop say it need new coolant temp sensor. and from where you say about it have no socket, so you use 2mm open end wrench. mine did have the same thing and i use my 22mm open end wrench and man it WONT loose up. and correct me if i am wrong, 02 sensor is under the manifold right or on the head muffler????? help please. also one more thing before you fix them did your motor shake too???
-randall
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What year Rodeo do you have and what engine is installed in it?
The O2 sensor and the coolant temperature sensors are two different parts. The oxygen sensor(s) are installed in the exhaust pipe and the coolant sensor is in the pipe behind the block on the 3.2L V6. Do a search in this forum, there was someone else who needed to change the coolant sensor and I provided a photo of its mounting location. Good luck changing it.
Use a good penetrating spray on the oxygen sensor and let it soak in for a few hours. Warm up the engine, it may help as well. Mine came out easily.
On my Rodeo, a new oxygen sensor fixed the black smoke problem. As I recall, the engine did not shake.
Dale