Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1986 Mazda 626 BaseFACTORY OEM SERVICE PROCEDURE
Section 11 (Engine Controls - Basic Testing)
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 1998 Mazda Protege, 1998 Mazda Millenia, 1998 Mazda MPV, 1998 Mazda B4000, and 1998 Mazda B3000. However, it is still accessible from the selected car via links, so may be relevant.
- Introduction
- Preliminary Inspection & Adjustments
- Fuel System
- Ignition Checks
- B2500, B3000 & B4000
- Except B2500, B3000 & B4000
- Spark Check
- Ignition Coil Power Source
- Ignition Coil Resistance (Millenia 2.3L)
- Ignition Coil Resistance (Millenia 2.5L)
- Ignition Coil Resistance (MPV)
- Ignition Coil Resistance (626 2.0L & 2.5L)
- Ignition Coil Resistance (Protege)
- Crankshaft Position Sensor Resistance
- Crankshaft Position Sensor Air Gap
- Camshaft Position Sensor Resistance (626 - 2.0L & 2.5L)
- Camshaft Position Sensor Voltage (Millenia 2.3L)
- Camshaft Position Sensor Voltage (Except Millenia 2.3L & 626)
- Ignition Control Module (MPV & Protege)
- Ignition Control Module (Millenia)
- Idle Speed & Ignition Timing
- Summary
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.