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.
1988 Mazda 929 AutomaticFACTORY OEM SERVICE PROCEDURE
Purge Solenoid No. 1
- For manual transmissions, disconnect neutral switch connector (M/T), jumper connector and start engine. For automatic transmissions, disconnect ECAT control unit after starting engine.
- Connect voltmeter between Brown/Red solenoid wire and ground. With engine temperature less than 131°F (55°C), voltage should be 12 volts. With engine temperature greater than 131°F (55°C) and engine RPM less than 900, voltage should be 12 volts. With engine warm and engine RPM greater than 900, voltage should be less than 2.5 volts. See Fig 1 .
- Disconnect vacuum hose from solenoid. Blow through port B. Ensure air exhaust through air filter.
- Disconnect 2 wire connector from solenoid. Connect 12 volts to one terminal and ground the other terminal of solenoid. Blow air through port B. Ensure air exhaust through port A.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.