1997 Explorer P0171 and 174 trouble codes

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Larry - 05 Oct 2005 00:08 GMT

To all,

Any ideas? These indicate "lean fuel air mixture bank 1" and P0 174 is
the same for bank 2. It drives fine. I noticed this happens after I
drive about a mile then shut it off and go to McDonalds, then continue
on. If I just leave home and head a couple of miles to the freeway
then things are fine. Driveability both warm and cold are good.

...Larry

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MRMIJO1 - 05 Oct 2005 05:02 GMT

HEY DID YOU EVER FIND OUT WHATS WRONG. DID YOU GET IT FIXED..

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clemdog - 06 Oct 2005 02:32 GMT

possible contaminated or faulty mass airflow sensor.clean wire element or
replace whole assembly.

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Larry - 10 Oct 2005 01:54 GMT

In article
<f8d9e9ca061112c147bfc41b26dfe85b@localhost.talkaboutautos.com>,
mcw.tx@nospam.sbcglobal.net says...

> possible contaminated or faulty mass airflow sensor.clean wire element or
> replace whole assembly.

What should I clean it with? Would canned air like you would use on a
computer work? I have that handy and do know where the sensor is.

...Larry

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C. E. White - 10 Oct 2005 16:03 GMT

See

http://autorepair.about.com/library/faqs/bl827d.htm
http://www.berrysweb.com/clean_your_maf.htm
http://www.explorer4x4.com/tips.htm (near the bottom)

Ed

> In article
> <f8d9e9ca061112c147bfc41b26dfe85b@localhost.talkaboutautos.com>,
[quoted text clipped - 6 lines]
>
> ...Larry

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Bigusdickus - 11 Oct 2005 13:18 GMT

This is down to the inlet manifold o rings allowing un metered air into
the system. Do the oom12 Modification new o rings of better material.
Just had the same problem. now OK SEE
www. explorerforum.com

Dick

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