P0171 DO THIS FIRST!! Clean your DIRTY MAF SENSOR!! Toyota Tacoma 4Runner √ Fix it Angel

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1995 1996 1997 1998 1999 2000 2001 2002 2003 2004
Toyota Tacoma Regular Cab, 4Runner, Engine 2.4L, 2RZ-FE

1998 Toyota Tacoma. Diagnosing and cleaning the MAF sensor.

Check engine light on: P0171 System Too Lean, Long term fuel trim at 35.1%, fuel trim should be below 10%.

When the air fuel ratio feedback is stable after engine warming up, he fuel trim is considerably in error on the RICH side

So I just cleaned the sensor with carb cleaner and brush.
Test drive for 45 miles, Oxygen sensor monitors cleared and no check engine light present.

Common Problems for P0171 Code
-Air intake (hose loose)
-Fuel line pressure
-Injector clogged
-Heated oxygen sensor malfunction
-Mass Air Flow Meter
-Engine coolant temperature sensor

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