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
626 Turbo
- Disconnect hose from pressure switch and connect Pressure Tester (49 H080 740) to switch. Apply 10-11 psi (.7-.8 kg/cm2 ). Connect ohmmeter between switch terminal and ground. Reading should be below 1.5 volts with air applied. With less than 10-11 psi (.7-.8 kg/cm2 ) applied, reading must be about 12 volts.
- To check switch resistance, remove switch. Connect pressure tester to switch and apply compressed air. Continuity between terminals should be indicated when more than 10-11 psi (.7-.8 kg/cm2 ) is applied. No continuity should exist at any other time.
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:
- • 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.
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