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.
Throttle Position Sensor (TPS)
Turn ignition off and disconnect electrical connector at TPS. Insert a thickness gauge between throttle stop screw and throttle lever. Using an ohmmeter, check resistance values. See Fig 1. If values are not as specified in chart, adjust or replace TPS.
| Throttle Clearance | Terminals | Ohmmeter Reading |
|---|---|---|
| .022" (.57 mm) | IDL - TL | Low Value |
| " | PSW - TL | Infinity |
| " | IDL - PSW | Infinity |
| .034" (.85 mm) | IDL - TL | Infinity |
| " | PSW - TL | Infinity |
| " | IDL - PSW | Infinity |
| Fully Open | IDL - TL | Infinity |
| " | PSW - TL | Low Value |
| " | IDL - PSW | Infinity |
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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.