1990 Mazda RX-7 Base, StandardFACTORY OEM SERVICE PROCEDURE

Resistance Tests

Remove sensor connector. Note terminal identification. See Fig 1 . Using ohmmeter, check resistance at specified terminals. Resistance must be within specification. See METERING OIL PUMP POSITION SENSOR RESISTANCEΒ  table.

Fig 1: Identifying Metering Oil Pump Position Sensor Terminals
G117777Courtesy of MAZDA MOTORS CORP.
METERING OIL PUMP POSITION SENSOR RESISTANCE

Terminal Ohms
Vc-E2 1000-2000
Vo-E2 400-12,000
Vo-Vc 400-12,000
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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