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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET1991R 30 P/U 2WD V8-350 5.7LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTHROTTLE POSITION SENSORSERVICE AND REPAIR
1991 Chevrolet R 30 P/U 2WD V8-350 5.7L
Throttle Position Sensor: Service and Repair
1991 Chevrolet R 30 P/U 2WD V8-350 5.7LSECTION Service and Repair
Throttle Position (TP) Sensor:
REMOVAL:
1. Disconnect electrical connectors.
2. Remove the TPS attaching screw assemblies and retainer, (if applicable).
3. Remove TPS from throttle body assembly.
NOTE: The TPS is an electrical component and must not be soaked in any liquid cleaner or solvent, as damage may result.
INSTALLATION:
1. Install TPS to throttle body assembly, while lining up TPS lever with TPS drive lever on throttle body.
2. Install the two attaching screw assemblies. Tighten screw assemblies to 2.0 Nm (18.0 lb-in).
3. Install electrical connector to TPS.
4. Check for TPS output as follows:
a. Connect an ALDL scanner to read TPS output voltage.
b. With ignition ON and engine stopped, TPS voltage should be less than 1.25 volts. If more than 1.25 volts, replace TPS.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.