Okay, so right now, my Ranger is in a million pieces.  Heater core replacement... so the dash is out, the evap housing is pulled forward, and the HVAC plenum (heater box) is on the garage floor.  I plan on also replacing the blend door while this is out, although mine seems to be just fine (call it a cover my butt move).

As many of you know, I performed the EATC mod back in 2017 and it has been somewhat successful, although it has one issue that I want to resolve while the HVAC Plenum is removed.  The cabin temp sensor (small vent just right of the radio) is supposed to draw air from the cabin to determine the actual cab temperature.  I discovered that it isn't doing that, and therefore the system won't maintain the set point temperature (say 72 degrees).  I want to relocated the aspirator hose to the OEM position that, I believe, is on top of the plenum and right next to the heater core and to the right of the blend door actuator.  Before I cut a hole to install the connector elbow, I want to verify I am correct on the proper location.  I am asking (no, begging) anyone who owns or has access to a 1998 to 2001 Explorer with EATC to please verify (preferably with a pic) the proper OEM location where the aspirator hose connects to the HVAC plenum.  You should be able to see the connection by dropping the glove box and looking up and left toward the radio area.  You will see a white corrogated hose coming from the dash vent and connecting to an elbow on the HVAC plenum.  THAT is what I need the picture of.  ANY help with this would be greatly appreciated!


EDIT: Above is a pic of where I THINK the connection should go.  The spot with four little posts and two holes.

Last edited on Sat Nov 20th, 2021 09:21 am by mhoward