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Buy another one for around $100. They are the same as the O2 sens on the EL falcon.

Pull the old one out, put the new one back in. Apparently they should be changed every 50,000kms so chances are the stock one u have in ure 'line is worn out.

The O2 sensor is also used during a cold start, at least it is once the sensor heats upto 800degC and starts operating. So a slow reacting or broken O2 sensor could cause the car to stumble and feel slugish while the engine is warming up.

pawson, the O2 sensor is screwed into the dump pipe right after the tubo. Don't assume its the O2 sensor straight off, it could be anything from incorrect heat range spark plugs to the thermostat. What sort of problems are you having?

my mates is dead and it just used lots of fuel when cruising blows a good flame though on gear change

Sounds exactly like my car. Fuel economy is shocking - but the flames are fun. Getting 02 sensor replaced on Monday. Will let you know how it goes.

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