The camshaft position sensor on a Mazda Miata is changed by disconnecting the wiring harness and unscrewing the sensor using a wrench. The threads can then be cleaned and a new sensor torqued into place.
The 2003 Mazda camshaft position in sensor can be found on the back of the left-hand cylinder head. The camshaft position sensor should be labeled as such.
On a 1999-2005 model Mazda Miata the camshaft position sensor is located on the valve cover towards the rear of the engine (closest to the firewall). It has one 3-pin connector connected to it and one 10mm bolt to remove the sensor
Camshaft Position Sensor is on the back of the valve cover on the right side (if looking directly at the engine from the front of the car).
IF that is the Intake Air Temp sensor - It is probably on the throttle body. the other sensor is the TPS throttle position sensor
If you open the hood and look directly at the engine, the sensor is on the top left of the cam cover. It's the small, black, plastic sensor held in by a single 10mm bolt.
See related links below for location. Unclip harness, remove 10mm bolt, remove sensor.
You adjust the timing by moving the crank angle sensor. The crank angle sensor is driven by the camshaft closest to the intake manifold (passenger side of the engine) and is located behind the cylinder head and valve cover. Losen the bolt that secures the crank angle sensor, in order to move the crank angle sensor.
On the top, rear passenger-side valve cover. Should only take about a minute to replace. Disconnect electrical connector; remove hold-down bolt (10 mm socket) and pull out sensor. Install in reverse order.
The 2000 Mazda Miata O2 sensor bank 1 is located on the firewall in the engine compartment. The sensor can be found on the passenger side of the firewall.
There are two fans on a Miata. The main fan is triggered by the coolant temperature sensor, which is at the back of the Miata engine, dead center, just above the transmission. The second fan is triggered when AC is turned on.
Looking directly at the engine, it is the small, black sensor on the left side of the valve cover. Simply unclip the electrical plug and remove the 10mm bolt. It will easily come out.