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One thing I'd like to know is, the lambda sensor
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- do they go gradually? or is it either completely fine or completely broke?
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Like widebands, I guess they can go out of calibration and send false readings back to the ecu.
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.
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which in turn will probably increase the mpg.
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Widebands lifespans are debateable.
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.
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I've not seen one last longer than 2 years.
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.
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.
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I've seen a few instances.
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.
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a change in the 02 sensor has resulted in an increased mpg.
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.
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.
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.
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.the error codes are only apparent on the heater element of the lambda
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( apart from Rev 1/2 turbos
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- no heater
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)
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Again.
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.
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taking into consideration the weather as well.
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.
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the EFi maps will stay on the warm up enrichment a little longer than in the summer
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= increased fuel usage.
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With the 3S block being of a cast iron construction, it does take considerably more time than full aluminium
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/ alloy construction engine designs.
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.
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.
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.
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.Factors.
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.
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like flat tyres
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/ brakes binding etc.
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.
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.
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need to all be considered.
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I had a friend with a Rev 3 turbo.
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.
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.
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poor on the petrol
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.
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.
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.
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and these are renowned for being brilliant when you think of the performance they produce
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( often Circa 300 miles to a tank
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)
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.
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.
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turned out that one of the front calipers and the rear calipers was binding on slightly.
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.
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.
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might as well have been towing a caravan around with him.
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For the price of a new lambda sensor.
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.
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it'll pay for itself in a few month
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/ weeks if you're a daily driver.
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.
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.
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.
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with the increased milage you'll reward yourself with.
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Nothing worse that tootling about and getting the same rubbish fuel consumption as if you'd been kicking it all over.
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