**PLEASE HELP** Single wire identification - Ranger-Forums - The Ultimate Ford Ranger Resource


2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

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Old 08-19-2016
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**PLEASE HELP** Single wire identification

The only one I didn't label......


https://drive.google.com/file/d/0B3Z...w?usp=drivesdk
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Old 08-19-2016
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Is that a wire or a vacuum line ?
It looks like the one that operates the dash controls.
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Old 08-19-2016
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Yes. It's kinda stiff. More like a hose than wire. Where might it go?
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Old 08-19-2016
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Yes it's more like a vacuum line. Stiff. Any idea where it hooks up?
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Old 08-19-2016
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The boot will mate up to the male end of that near by.
Look for another vacuum line that looks similar in size _ probably hanging over the valve cover somewhere around the exhaust manifold.

Yours is a 2002 and 3 years newer then mine, so things are a little difference.
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Old 08-20-2016
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Looks like a Grey vacuum hose that comes out of the firewall.
It would go to the Heater hose valve, seen behind your hand in picture, it closes valve when No Heat or Max AC is selected.

Last edited by RonD; 08-20-2016 at 01:29 PM.
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Old 08-20-2016
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It reminds me of the vacuum line that goes to the Fuel Pressure Regulator, though the line to mine is much smaller. Not even sure you have a regulator, but mine is attached to the front of the passenger fuel rail. Just a guess.
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  #8  
Old 02-27-2017
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Also have the same hose with no place to go...

I discovered this vacuum hose off, and for the life of me cannot find a place to plug it.. Swear I've gone over every inch of engine where this thing reaches.

Seems to be a consensus that it's the heater control, however my heat and AC work fine, and not just out of the defrost vents as suggested.

Truck is running EXTREMELY rough and have been getting misfire CEL's.

Pictures here show the same as the OP. It's definitely a vacuum, it suctions to your finger.

Thanks,

Matt

Mystery Vacuum Hose 1
Mystery Vaccuum Hose 2
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