Ive got a Mk2 VTS, i was wondering what would happen if you was to unplug the second lamba completely rather than sleeve it?
Second lamba sensor
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#1
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#2The ECU would see a fault
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#3As above, your engine management light will come on, but the car won't run any different.
The light does occasionally come on with the sensor sleeved too. 3 plugs are hit and miss. -
#4Best to get it sleeved though as u may encounter other problems and wont be able to notice with your light on anyway..