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Honda Civic / Del Sol (1992 - 2000) EG/EH/EJ/EK/EM1 Discussion

Strange idle surging and mpg drop..

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Old 10-09-2014, 06:12 PM
  #51  
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Default Re: Strange idle surging and mpg drop..

Originally Posted by NotARacist
If your exhaust smells like gas, the bogging, idle, and dying could also be partially related to the O2 sensor. Bad O2 sensor gives a bad reading, ECU reads the bad reading and sends too much fuel, ruins your gas mileage and floods your engine, ECU can't get the timing in the right range to make it run right, engine runs like ****.

I'm not saying your IACV isn't at fault, but it's definitely worth taking it step by step, instead of trying to hit it from 12 angles at the same time.
Ok that sounds great i hope the o2 really helps i think ill get it tomorrow and install it this weekend and as soon as i do it ill let you know... regular things following installation? reset ecu? let it run 10 mins no aceleration or things on? something alse?
Old 10-09-2014, 06:22 PM
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Default Re: Strange idle surging and mpg drop..

Yep, install, reset ECU, see if code comes back when you start the car, drive it for 15 minutes, and if the CEL doesn't pop for the O2 sensor, you should be good.
Old 10-09-2014, 06:28 PM
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Default Re: Strange idle surging and mpg drop..

Alright! hope it doesnt i hope theres not a reason for it to come back unless its not working?
Old 10-10-2014, 07:10 AM
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Default Re: Strange idle surging and mpg drop..

Or there's a problem in the wires, or you missed an exhaust leak.
Old 10-29-2014, 01:45 PM
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Default Re: Strange idle surging and mpg drop..

Àlright well i've been out for a while and im sorry but k back and this afternoon lll try to do something but first update was i went to a nother plave and i have 2 different types of plugs thats all for now but this weekend i hope yo do something
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