PO171, 99 Blazer

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May 7, 2006 | 06:12 PM

frankjc

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Joined: Mar 2006

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PO171, 99 Blazer

Hey all. I had my car scanned at Auto Zone... Came up with PO171 The PCM has determined that during testing, the fuel system for bank 1 was too lean.
Any ideas?

May 7, 2006 | 07:13 PM

magtec

Joined: Feb 2006

Posts: 167

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RE: PO171, 99 Blazer

http://www.obd-codes.com/trouble_cod...gen-sensor.php

May 7, 2006 | 07:47 PM

4lowlife

Super Member

Joined: Dec 2005

Posts: 1,539

RE: PO171, 99 Blazer

I would start by cleaning the MAF sessor w/ electrical parts cleaner. Erase the code and take it from there.

Could be a bad O2 sensor. Dunno yet.

May 8, 2006 | 12:19 AM

frankjc

Thread Starter

Joined: Mar 2006

Posts: 99

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RE: PO171, 99 Blazer

Thanks...I'll give it a shot.

May 8, 2006 | 03:12 PM

MCas86

Joined: Jun 2005

Posts: 182

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RE: PO171, 99 Blazer

i liked that site mag, thanks for posting it, i added it to my favorites...could b useful in the future along with asking people on the forum.

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