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What does the pyrometer (exhaust gas temperature gauge), when equipped, help the driver avoid?
- A.Low tire pressure
- B.Brake fade directly
- C.Excessive exhaust temperatures that can damage the turbocharger and engine, by signaling when to ease off or downshift on a hard pull
- D.Overfilling the fuel tank
Correct answer
C. Excessive exhaust temperatures that can damage the turbocharger and engine, by signaling when to ease off or downshift on a hard pull
Why
Rising exhaust temperature is an early measure of how hard the engine is being worked beyond its comfort zone. Backing off or downshifting when the pyrometer climbs protects expensive components before the coolant gauge even moves.
Manual topic: Gauges - Pyrometer · From the General Knowledge practice bank (GK-374).