The B2600i does not have an EGR valve, because the truck is fuel injected the ECU monitors driving conditions and retards ignition timing to lower NOx emissions.
Kyrasis6
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61 - 69 ft-lb
The idle air control valve is on the the bottom of the throttle body.
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).
1993 what?
5 foot lbs
The 1993 Mazda. reverse light switch is located below the shifter column. The relay switch can be seen by removing the center console.
pass.side valve cover at the rear
its a Mazda engine . ( DOHC 4cyl. 16 valve 2.0l ) For the probe 1993
its under the radio
Under the thermostat housing