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.
EGR Boost Solenoid
Remove EGR boost solenoid. See EGR BOOST SOLENOID LOCATIONS table. Apply air pressure to port "B" of solenoid valve. See Figure . Air should flow from port "C" only. Using fused jumper wires, apply battery voltage to solenoid valve terminals. Apply air pressure to port "A" of solenoid valve. Air should flow from port "B" only. Replace solenoid valve as necessary.
| Application | Location | |
|---|---|---|
| Miata | Center Right Side Of Engine Compartment | |
| Millenia 2.5L | Center Rear Of Engine Compartment | |
| MPV | Next To Air Cleaner | |
| Protege | Right Rear Of Engine Compartment | |
| 626 | ||
| 2.0L | Right Rear Of Engine Compartment | |
| 2.5L | Top Rear Of Engine At Left Valve Cover | |
NO RELATED
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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.