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

Vacuum Line Maybe?!

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Old Nov 15, 2024
  #1  
RangerV64.0's Avatar
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From: Claremont, California
Vacuum Line Maybe?!

Hey Yall, first time posting here but i figured i’d give it a shot. I’m having some issues with my ac not blowing, as well as engine code p0171 bank 1 and 2 too lean.


Heres a picture of the 2 lines i have free


Does anyone know what these could go to?
 
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Old Nov 16, 2024
  #2  
Georgeandkira's Avatar
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From: Hackensack, Nj
I'm not on the Welcoming Committee, but WELCOME to the Ranger Forums. We are the finest people on Earth.
Include year / engine / mileage / general condition etc. in posts as it makes it easier for everybody.

Those lines go to and from a vacuum reservoir which is found on the forward side of the FR wheel arch.
Mine is spherically shaped. Look down in the area below and ahead of the alternator. It almost touches the radiator's side tank.
I just looked at my engine bay -we have the same engine- and the rubber fittings on my vacuum lines match yours.

Fix those reservoir connections before further diagnosing the P0171 code as your condition is leaking vacuum, thus contributing to your lean condition.


 
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