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Civic 3-stage vtec D15B "econo mode" not working

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Civicbob

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My car CEL seems to come on when the car is about to switch to lean burn mode, so the ECONO light on the dash does not illuminate. Tailpipe is sooty black and fuel consumption is increased.
 
Izso

Izso

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Civicbob said:
My car CEL seems to come on when the car is about to switch to lean burn mode, so the ECONO light on the dash does not illuminate. Tailpipe is sooty black and fuel consumption is increased.
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Pretty much sounds like a dead O2 sensor
 
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Civicbob

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Odd thing happened, was low on fuel on two occasions and the econco light came on for about 15 secs. before CEL light came back on.
 
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help needed...rpm meter
all sifus & to those who have encountered such problem, your advice is much appreciated.

my wira rpm is always at stationary (0 rpm) when idling. however when in motion, it works like normal. very reluctant to send to mechanics as they might dismantle dashboard that may cause dashboard rattles.

please help. thanks.
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