Honda Civic Performance - JDM Discussion Engine tech, forced induction, springs, shocks, brakes, tires, etc.

ef engine light

Old 06-Aug-2007, 04:20 PM
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ef engine light

I have a 1990 dx hatch with duel injection. engine light comes on after 5min ecu flashes once = o2 sensor. I replaceed sensor and reset ecu ran 10 15 min, light came on. dropped the cat to see if it was clogged, cat looks almost new inside and i can see right through. I pulled the plugs checked them all and they look good, a little bit a white. plug and wires are new, new o2, no weird smole or anything thing, once and a while i get an rotten egg smell. I checked the egr valve and it moves nice and free. ecu still blinks 1. Any help would be great.
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Old 06-Aug-2007, 09:02 PM
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leave the batt off longer.
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