2001 Mazda Truck TROUBLE CODES

P0171/0174

A lean fuel condition can be caused by:

* Low fuel pressure due to a weak pump or leaky fuel pressure regulator. (Use a fuel pressure gauge to check fuel pressure at idle)

* Dirty fuel injectors. (Try cleaning the injectors)

* Vacuum leaks at the intake manifold, vacuum hose connections or throttle body. (Use a vacuum gauge to check for low intake vacuum)

* Leaky EGR valve. (Check operation of EGR valve)

* Leaky PCV Valve or hose. (Check valve and hose connections)

* Dirty or defective Mass Airflow Sensor (MAF). (Try cleaning the MAF sensor wires or filament with aerosol electronics cleaner. Do NOT use anything else to clean the sensor, and do not touch the sensor wires)

Outbox : Message
From: rasmataz
To: TROF

Posted: Sat Jan 19, 2008 1:42 pm
Subject: Re: TROUBLE CODES

One of those areas will knock out your problem if so comeback with a feedback that way everybody will learn from on it, on this make/model.