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.
1990 Toyota Corolla Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Throttle Position Sensor (TPS) Specifications
THROTTLE POSITION SENSOR ADJUSTMENT
| Clearance Between Lever & Stop Screw | (1) Ohmmeter Reading At Terminals IDL & E1 (Or E2) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Camry & Celica | |||||||||
| 4A-FE | |||||||||
| .020" (.51 mm) | Continuity | ||||||||
| .032" (.81 mm) | No Continuity | ||||||||
| 3S-FE, 3S-GTE & 5S-FE (2) | |||||||||
| .020" (.51 mm) | Continuity | ||||||||
| .028" (.71 mm) | No Continuity | ||||||||
| 3S-FE & 5S-FE (3) | |||||||||
| .020" (.51 mm) | Continuity | ||||||||
| .035" (.89 mm) | No Continuity | ||||||||
| Corolla | |||||||||
| 4A-FE | |||||||||
| .020" (.51 mm) | Continuity | ||||||||
| .032" (.81 mm) | No Continuity | ||||||||
| 4A-GE | |||||||||
| .014" (.36 mm) | Continuity | ||||||||
| .023" (.58 mm) | No Continuity | ||||||||
| Pickup & 4Runner | |||||||||
| .022" (.56 mm) | Continuity | ||||||||
| .034" (.86 mm) | No Continuity | ||||||||
| Tercel | |||||||||
| 3E-E | |||||||||
| .024" (.61 mm) | Continuity | ||||||||
| .032" (.81 mm) | No Continuity | ||||||||
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Factory Service Tools
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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.