Location of temp sensor on 2000 blazer - 2000 Chevrolet Blazer

Coolant temp sensor or fuel pump.

which crank sensor do you replaced ? the P0336 means P0336 Crankshaft Position Sensor A Circuit Range/Performance.

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Inside the distributor cap... Hope this helps

There are two one for coolant fan and one for engine temp . engine temp is usally located in the side of the head on driver side by exhaust manifold .
coolant fan temp sensor is located on the intake near the thermostat housing .

Fig. CMP (Camshaft Position) Sensor location of 2000-05 4.8L, 5.3L, 6.0L Engines

The temperature sensor is located on the intake manifold by the thermostat housing. Check the wire leads first and if that's good, replace the sensor and thermostat. The 4.3 was programed by the factory to run it's best at 190'", if it runs too cold. The mil light comes on indicating a temperature sensor failure.

bad temp sensor. when you open the hood look where the hood latch is and the sheet metal bar in middle right behind grill there is a clip with a sensor on a wire, sensor is black about 1.5 inches disconnect get new one at store, replace

On the exhaust coming out of the engine, you will see the O2 sensor screwed into the pipe before the catalytic converter and then you will see one screwed in after.  I don't know the exact location for them but they look kinda like a spark plug with a wire coming out of the top of it.  

Try checking the temperature sensor. I had alot of problems with my 2000 blazer, and found that a spark plug wire was arcing out the temp. sensor.

THE TEMPERATURE SENSOR SHOULD BE ON THE TOP OF THE ENGINE NEAR THE TERMASTAT. IT STICKS OUT OF THE ENGINE SO YOU SHOULD SEE IT