Question about 1999 Ford Explorer
Need to know how best to clean my mass air sensor
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Posted on Jan 02, 2017
i will try to help. 171/174 indicates lean condition in engine. the mass air flow sensor is located in the rubber tube going to throttlebody. you can try to clean it. using mild carb cleaner safe for sensors, remove sensor from tube. spray clean the tiny wires located in the cylinder. do not touch them, they are very delicate. these engines are also notorious for leaking intake gaskets and faulty pcv valves. these will all set these 2 codes. feel free with anymore questions.
Posted on Nov 15, 2008
small emissions valve with one electrical connnector and three to four vacume lines located near your egr valve. this is a comon fault on fords emmissions system.
Posted on Aug 15, 2009
SOURCE: location of mass air flow sensor
The sensor is mounted on the throttle body between the air cleaner assembly and the air cleaner outlet tube.
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Posted on Sep 04, 2009
SOURCE: trouble code 0171
P0171 OBD-II Trouble Code
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System Too Lean (Bank 1)
What does that mean? Basically this means that an oxygen sensor in bank 1 detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1.
Note: This DTC is very similar to P0174, and in fact your vehicle may show both codes at the same time.
Symptoms You will more than likely not notice any drivability problems, although there may be symptoms such as a lack of power, detonation (spark knock), and/or a hesitation/surge on acceleration.
Causes A code P0171 may mean that one or more of the following has happened:
Posted on Oct 05, 2009
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