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What is this....and check engine light.

2004 - 2008 F-150

What is this....and check engine light.

 
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Old 10-04-2014, 04:41 PM
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What is this....and check engine light.

Engine light came on, code P0174. Running fine. Popped the hood just to poke around and found the hose connected to the factory air intake downstream of filter upstream of throttle body disconnected. It is not the electrical connection but something else. Just a hose. What is it and would this cause my code/light?

2007 f150 v6 2wd
 
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Old 10-04-2014, 04:48 PM
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Old 10-04-2014, 05:20 PM
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For want of a better word, that is a vent or intake air for the motor to breathe through the PCV valve. When the intake sucks air through the PCV it has to come from somewhere.

Without looking it up, that's probably a lean code because air is entering the system after the MAF and the O2 sensors are picking it up. Stuff it back into the hole it goes in and clear the codes to see if they come back. They probably won't. If they do post what you got in this thread and I'm sure someone can help you out.

Good luck.
 
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Old 10-04-2014, 06:00 PM
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Thanks. It is a lean code. Bank two I think.
 
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Old 10-06-2014, 07:46 PM
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Light is not back on but when I push the clutch in and coast in neutral it idle low almost to the point of stall and then back up. Just washed the truck so not sure if it is related to that or if the light will be coming back.
 
 


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