"http://wiki.answers.com/Q/What_is_causing_the_engine_light_to_constantly_stay_on_in_a_vauxhall_astra_on_2001_plate_but_the_car_is_running_fine"
The fuel pump runs constantly as long as the engine is running.
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As long as the engine is running, it is normal for the fuel pump to run constantly.
The engine could stall when you are on the road, causing a traffic problem.
After the engine has cooled to a certain temp, it should shut off. If it is running constantly, this is an indication the engine is overheating.
If the engine is running, then no. The alternator constantly keeps the battery charged.
It sounds like the thermostat is opening up late causing the engine to almost overheat before it opens. Replace the thermostat.
The airbag ECU on a Vauxhall Vectra is located in the engine bay. It is on the side of the engine on the passenger side.
vauxhall vectra 2.2 z22se engine has a chain
Relay is stuck.
Fuel pump relay is stuck. Replace it.
The air filter on a 1998 Vauxhall Corsa engine is located in the engine bay. It is located at the rear of the compartment.