2006 Explorer Grey AC Line Mystery

[dbeyer]

The AC works fine until I accelerate. Accelerating causes the AC front blowers to dip and not blow any air. I hear a hiss from behind the glovebox, and AC doesn't return until I take my foot off the gas. Checking behind the glovebox, all connections seem sound. Looking under the hood I found the grey AC line just dangling. I can't figure out where this is supposed to connect. It isn't very long so the right port can't be far. Is it missing a length of hose at that elbow? Does anyone know where this is supposed to connect? Hoping that will solve the issue.

 

[swshawaii]

Grey line possibly to the heater control valve that appears capped or the vacuum reservoir "ball" mounted to the passenger inner fender.

Hissing may be a faulty A/C check valve. (YG-360)

Hissing noise when accelerating then dies out

I have a 2006 Explorer Eddie Bauer V6 and sometimes when the heat is on and at the beggining of my acceleration, it will hiss for about 5 seconds then stop but will do this everytime i accelerate. This only happens occasionally. To elaborate on the sound, it sounds like when you turn the manual...

www.explorerforum.com

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[dbeyer]

Grey line possibly to the heater control valve that appears capped or the vacuum reservoir "ball" mounted to the passenger inner fender.

Hissing may be a faulty A/C check valve. (YG-360)

Hissing noise when accelerating then dies out

I have a 2006 Explorer Eddie Bauer V6 and sometimes when the heat is on and at the beggining of my acceleration, it will hiss for about 5 seconds then stop but will do this everytime i accelerate. This only happens occasionally. To elaborate on the sound, it sounds like when you turn the manual...

www.explorerforum.com

​

Thanks for the speedy response! I had a suspicion it might connect to the component circled in this image (heat control valve?) but the line is far too short to reach. Is there supposed to be another length of hose that goes from the elbow to that valve?