| Symptom | Forum "Expert" Advice | Service Manual Solution | | :--- | :--- | :--- | | Rough idle when cold | "Replace the whole throttle body" | Clean & test the IACV resistance (Pages EG2-347) | | Oil leaking near dizzy | "Use more RTV silicone" | Replace the distributor O-ring (Part #90099-14118) with correct seating depth | | Overheating in traffic | "Drill a hole in the thermostat" | Burp the cooling system using the correct bleed valve procedure |
Unlike modern OBD-II cars, the 5A-FE requires bridging diagnostic terminals TE1 and E1 in the check connector to set timing. The manual provides the specific resistance values for the Water Thermosensor (20°C = 2-3k ohms, 80°C = 200-400 ohms). Toyota 5a-fe Engine Service Manual