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.
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HOMESERVICE MANUALSCHEVROLET1987SPECTRUM-IMPORT L4-91.5 1509CC 1.5L VIN 7 2-BBLREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTHROTTLE POSITION SENSORADJUSTMENTS
1987 Chevrolet Spectrum-Import L4-91.5 1509cc 1.5L VIN 7 2-bbl
Throttle Position Sensor: Adjustments
1987 Chevrolet Spectrum-Import L4-91.5 1509cc 1.5L VIN 7 2-bblSECTION Adjustments
1. Ensure that TPS bracket screws are tight and that no play exists in TPS and primary throttle valve arms.
2. Connect suitable ohmmeter to green and black leads of TPS.
3. Open throttle approximately one third through its travel, then slowly close throttle and observe ohmmeter. Continuity should exist when primary throttle valve clearance is .011 inch on models with manual transmission or .015 inch on models with automatic transmission.
4. To adjust, loosen TPS bracket screws and slide TPS as necessary until continuity exists at specified clearances.
5. Retighten bracket screws.
RENDER: 1.0x
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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.