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 MANUALSOLDSMOBILE1989DELTA 88 V6-3800 3.8LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTHROTTLE POSITION SENSORADJUSTMENTSTHROTTLE POSITION (TP) SENSOR ADJUST
1989 Oldsmobile Delta 88 V6-3800 3.8L
Throttle Position (TP) Sensor Adjust
1989 Oldsmobile Delta 88 V6-3800 3.8LSECTION Throttle Position (TP) Sensor Adjust
TPS Adjustment Check:
Make adjustments, only after the minimum idle speed has been adjusted, or throttle body parts have been replaced. A scan tester may also be used for this adjustment procedure or test.
1. Disconnect TPS connector and connect jumpers between the harness connector and the TPS sensor. Connect a suitable digital voltmeter to the dark blue and black wires in the TPS harness.
2. Turn ignition switch to the "ON" position, but do not start the engine. See TPS voltage reading under SPECIFICATIONS for voltage reading.
3. If voltage reading is higher than described in step 2, loosen the TPS retainer screws and rotate the the TPS sensor until you obtain the correct reading.
4. If voltage reading is satisfactory, tighten the retaining screws and and remove the voltmeter and jumper leads. Reconnect the TPS connector.
5. If proper voltage reading cannot be obtained , replace TPS sensor.
RENDER: 1.0x
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.