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4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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Old 03-17-2011
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Check engine light

I went to autozone today so that they could read the code on my truck and it said my bank 2 was lean. What could cause this? They said anything from maf, egr valve, or vacuum line leak could cause this. What do yall think
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Old 03-17-2011
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year, engine?
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Old 03-17-2011
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Old 03-18-2011
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sorry it is a 2002 ranger 4.0l 4x4 automatic
the codes were
p0171: bank 1 lean
p0174: bank 2 lean
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Old 03-18-2011
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Icon6

you might look at this;
http://www.aa1car.com/


also it may indicate that you need a tune-up or it may have a vacuum leak. If it's got a lot of miles on the plugs it can make the o2 sensor show a code for a lean condition just simply because the plugs aren't doing their job anymore.
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Old 03-19-2011
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look up vaccum hose elbow
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