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Old March 10th 05, 05:01 AM
jim beam
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jbourgeois wrote:
> "jim beam" > wrote in message
> news:1110057641.58f56630a503c7d86ca290cf490b466f@t eranews...
>
>>SoCalMike wrote:
>>
>>>jbourgeois wrote:
>>>
>>>
>>>>I have been getting an intermittent P0171 code, fuel system too lean,
>>>>along
>>>>with a P0170 code, fuel compensation value exceeded the specified
>>>>range. To
>>>>prevent a barrage of useless follow-up questions, here are the specs
>>>>of my
>>>>car: 1998 Honda Accord LX, 4-cylinder, 123k. New spark plugs and
>>>>distributor cap.
>>>>
>>>>I don't know where to start to find the source of this problem. If it
>>>>helps
>>>>someone to pinpoint the problem, I have on one or two occasions smelled

>
> a
>
>>>>fuel smell while the light was on, and have occasionally had some
>>>>hesitation
>>>>before accelerating from a dead stop (even catching and almost
>>>>stalling once
>>>>or twice). The car also occasionally shakes while driving at a normal
>>>>speed.
>>>>
>>>>Thanks for any suggestions about what to do.
>>>>
>>>>
>>>
>>>googling "p0171" got me:
>>>
>>>http://autorepair.about.com/library/faqs/bl903d.htm
>>>http://toyotaownersclub.com/forums/i...showtopic=9206
>>>
>>>mass air flow sensor?

>>
>>afaik, honda don't use air flow mass sensors - they use pressure sensors
>>& an electronic map of the differential between manifold pressure &
>>atmosphere for whichever motor it is.
>>
>>that code is covered in
>>http://www.alldata.com/TSB/24/982426AX.html
>>which leads to:
>>http://www.hondalac.com/service/Bulletins/x00-018e.pdf
>>
>>replace regulator & vacuum hoses.
>>

>
> > Before I replace vacuum hose and fuel regulator, I need to know if the O2

> sensor might be the problem. Does anyone know how to check that? Does a
> faulty or "lazy" O2 sensor seem like a possible cause for the system too
> lean code?
>

i believe you usually get too rich in that situation. if it were my
car, and there was a t.s.b. for exactly the problem i was experiencing,
i'd be inclined to foillow the t.s.b.'s service procedure /before/
trying to chase anything else.

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