Mono-Jetronic, Mono-Motronic
To improve the dynamic properties during engine warm-up, an electric heater is installed in the intake manifold. The heater heats up in a matter of seconds and gives off its heat to the air-fuel mixture. The heater consists of the actual heating element (hedgehog) and a thermal switch located at the coolant pipe on the cylinder head, see chapter «Cooling system».
Check thermal switch, see chapter «Cooling system».
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