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 Chevrolet Spectrum ExpressFACTORY OEM SERVICE PROCEDURE
Inlet Air Temperature Switch
- If code 44 is stored during cold weather operation, inlet air temperature switch should be tested. With ignition on and engine stopped, check Black/Red wire for open or ground. See Fig 1 .
- If Black/Red wire is okay, check Black wire ground connection. If okay, check switch for continuity. Switch should have no continuity above 32°F (0°C). Switch should have continuity below 32°F (0°C).
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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