Top center of engine block, under intake manifold. Terminates on 3m or 3s on the pcm harness, depending on model and year. Normally reads 560 ohms at 68 deg. F, with sensor disconnected. Problems show up on code P0325 Costs about $175 for part (oem)
Most knock sensors are located in the block on the firewall side. Should be the only sensor with two wires in the block. It will also have a camshaft position sensor as well. Hope that helps. I am not educated on Mazda engines.
It is a nonservicable part, just replace it.
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29's here i have a 97 Mazda millenia 2.5 and have had the knock sensor replaced. all the Mazda 2.5 motors 95-02 are the same so i can tell you that its located in the center of the engine only accessible from the top of the motor underneath the intake and fuel rails (which have to be removed in order access the sensor). the gasket for the intake can not be reused and must be replaced. this a repair that a standard mechanic should be able to perform. hope this helps. It is underneath the supercharger support bracket on the 2.3L.
Depends on Which Year and Which Engine (2.3 or 2.5) My 99 2.5L has 4 o2 PLUS a knock sensor
On the transmission output shaft housing on the side closest to the firewall.
29S HERE, ONLY 97 AND 98 MILLENIAS HAVE THE EXACT SAME MOTORS. I HAVE A 97 AND I HAVE REPLACED MY KNOCK SENSOR WHICH IS LOCATED IN THE CENTER OF THE ENGINE BELOW THE INTAKE. IT WILL REQUIRE THE REMOVAL OF THE AIR INTAKE AND NEW INTAKE GASKETS YOU CANNOT REUSE THE OLD ONES.
yah, but it wont pass. Won't pass in GA, Cost me 170 for the part + 800 for Labour Have fun with that, I know I did M
No, Depends on the year and model. I can however speak for the 99 2.5L It is buring deep in the Manifold and the average DIY cannot fix this one. I spent 160+/- for the part and 800 for the Labour. Good Luck