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.
1987 Alfa Romeo Spider GraduateFACTORY OEM SERVICE PROCEDURE
Altitude COMPENSATOR Sensor
Disconnect wiring from sensor. Measure resistance between terminals No. 2 and 3. Measure resistance between terminals No. 1 and 2. If resistance values are not as specified, replace sensor.
NOTE:
This resistance value will change depending on altitude of vehicle.
ALTITUDE COMPENSATOR RESISTANCE SPECIFICATIONS
| Test Terminals | (Ohms) | |
|---|---|---|
| 2-3 | 2000-3000 | |
| 1-2 | ||
| At 0-4000 Ft. | 500-4500 | |
| Above 4000 Ft. | 2500-6000 | |
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.