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.
1989 Ford Probe GL, StandardFACTORY OEM SERVICE PROCEDURE
Turbo Boost Control Solenoid Valve Check
- Remove small air tube from turbocharger inlet air hose. Disconnect turbo boost control solenoid valve electrical connector. See Fig 1 .
- Blow through small air tube and ensure air will not flow. Apply 12 volts to one terminal of the electrical connector and ground the other terminal.
- Blow through the air tube and ensure that air flows through the tube. If solenoid valve does not pass test, replace solenoid valve.
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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