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 MANUALSBUICK1994ROADMASTER ESTATE WAGON V8-350 5.7LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTHROTTLE POSITION SENSORADJUSTMENTS
1994 Buick Roadmaster Estate Wagon V8-350 5.7L
Throttle Position Sensor: Adjustments
1994 Buick Roadmaster Estate Wagon V8-350 5.7LSECTION Adjustments
Throttle Position Sensor Circuit.:
The TP sensor is not adjustable. The reading should be checked only when the TP sensor or throttle body has been replaced or minimum idle air rate has been adjusted. To check the TPS reading connect a digital volt ohmmeter to the dark blue and black wires in the sensor harness. Take reading with key "ON" engine "OFF". A scan tool may also be used for this test.
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.