Vacuum leak, only has defrost setting. - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 07-08-2016
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Vacuum leak, only has defrost setting.

Ok I know I have a leak somewhere. Could be the vacuum canister, but I can't find it in the engine. I know I have couple hoses either disconnected or taped together.
Can someone please tell me where this broken line goes? And maybe post a photo of where the vacuum canister is. I'm pretty sure from reading it is on the front passenger wheel well, just can't fine it from looking. Will have time tomorrow and Sunday to look for it for real. Previously I've only been eye balling it in the dark after work.
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Old 07-08-2016
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Also have this T connection taped back together. Can someone tell me what it is?
All of my L elbow shaped connection on the vacuum lines look good but I know they need to be double checked. And I'm going to check the vacuum lines under the glove box and behind the HVAC controls when I replace the blend door motor. I know that won't fix the cent issues but I already have a new one and it will be a quick process to replace.
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Old 07-08-2016
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Vacuum reservoir is where you are looking, front passenger side engine bay, but it might behind inner fender.
Look for vacuum lines.
One will come from the firewall to the vacuum "ball", usually black plastic hard line.

You should have a vacuum diagram label on the radiator support.
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Old 07-08-2016
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Here's the diagram. Do I need to remove anything to see the vacuum canister. It may have been to dark last night for me to see it with my flashlight.
I figure it either the canister has gone bad( front end is damaged from my mother having a fender bender) or the hose in the first picture melted and disconnected.
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Old 07-09-2016
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Look in the passenger side well wheel, in front of the tire
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Old 07-09-2016
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I think I found the leak. In the photo I'm posting I'm holding a very thin black tube that has broken off from something. It is adjacent a the gray tube. I believe these are the two vacuum lines that go into the glove box. So what should the broke black tube be plugged into?
Still couldn't find the vac canister.
Also I think the first photo is a vac line for my cruise control.
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Old 07-09-2016
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Will the vac ball be below my air filter, coolant and washer fluid reservoirs?
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Old 07-09-2016
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Yes, it will be below all that.

And if front end was repaired is it possible the "ball" was removed and not replaced?

The "hose" connects to the "ball"

Images here: http://www.explorerforum.com/forums/...obe-jpg.39621/
and here: https://www.ranger-forums.com/attach...ine=1327187830

Last edited by RonD; 07-09-2016 at 03:18 PM.
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Old 07-09-2016
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Thank you. Now I know what I need to do next.
The front end hasn't been repaired so ithe vac must be somewhere in there.
Thanks for the quick reply Ron.
Any chance you know what gauge that tube is?
It really short so I can't cut much of it off to take and compare. Might be able to expose more once I take off the reservoirs.
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  #10  
Old 07-09-2016
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I would just go to a wrecking yard and get a vacuum reservoir and some hose with it.
vacuum hose is easy to splice.
Hard lines just need a soft line that fits snugly over it, and you can have a few feet of soft line between the hard lines.
Soft lines just need correct size inserts, no clamps or other stuff needed.
As long as connections are snug they won't leak.

And you don't need a "Ranger" vacuum reservoir, all Ford cars and trucks use them.

Then just put it down in engine bay and "tie it" out of the way until front end repair.
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