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Old 09-11-2011
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Some AC questions

Thanks to andy i got a new radiator today and an ac line.

but i can't get it off.

so does this part need a special tool to get off? napa?



and what plugs into this? its pretty much right by the battery on the drivers side, i can't find anything to plug into it though. i'm talking about the tiny black part. not the longer one that screws into by the radiator.

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Old 09-11-2011
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You need an A/C line/ fuel line disconnect tool and that black part is just a service port that doesn't go to anything.

This vid should give you an idea:
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Old 09-11-2011
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You need a pair of these

There is a spring inside of that circle deal that holds the connection together, you'll put the pliers on the pipe and they'll go inside the circle deal and you should feel it compress a spring, then you should be able to pull your lines out.
As for the second picture, That black piece is a cap that screws off, correct? if it is, than thats the High side charge port. its how you charge the A/C in your truck. another special fitting, like the recharge kits you see at Napa, only bigger. i have one in my tool box somewhere but they don't recommend you charging your A/C from the high side.
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Old 09-11-2011
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no the shorter one, not the vertical part.

it has 2 metal connectors inside.

the one on my truck now has a plug in it with a few wires on it.
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Old 09-11-2011
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Maybe the A/C pressure switch.
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Old 09-11-2011
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Quote:
Originally Posted by sheltonfilms View Post
Maybe the A/C pressure switch.
^that. i keep forgetting your v8. i was like, on my truck thats the high side....lol.
that switch lets the compressor run, but that switch is only active when there is a good charge in the system.
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Old 09-11-2011
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^^ No wonder I was confused. I didn't know he had a V8. Mine has the high side there too.
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Old 09-12-2011
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Quote:
Originally Posted by Vonhanson View Post
and what plugs into this? its pretty much right by the battery on the drivers side, i can't find anything to plug into it though. i'm talking about the tiny black part. not the longer one that screws into by the radiator.

[/B]
A/C High Pressure Cutoff switch that opens if the system is overpressured. In the factory configuration, the A/C will not work if this is not plugged in.

In the original 99~01 Explorer/Mountaineer 5.0 app, the connector for the High Pressure Cutoff Switch was in the small harness that plugs into the 12-pin to the rear of the battery. It's the same Ex harness that has the plug for the A/C compressor clutch. I'm not sure if the earlier Ex V8 was wired the same way.
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Old 09-12-2011
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so its in the main harness or does it need to be added in? i have the plug for the ac compressor, but i couldn't see any plug that was up close to the battery at all.
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Old 09-12-2011
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The connector is not in the main 99~01 5.0 Ex engine harness. There is a second smaller harness.
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Old 09-12-2011
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Got any info on where that all goes to and from? maybe a diagram?

i know your the king of information when it comes to these vehicles lol
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Old 09-13-2011
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Best source is the Ford Wiring Diagrams manual, one for your truck and one for the engine donor. Cheap on eBay.
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