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  #1  
Old 05-30-2012, 03:57 PM
swopey swopey is offline
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Default Yes, another a/c question!

I have a 98 ranger 4cylinder 5spd that has a little a/c problem.
when I bought the truck, the guy said he replaced the compressor and that there was another part that he did not replace, but I dont know what it is called, and or if this will fix my problem.

I just put freon on the other day to get it going and see it it had any leaks or see if I could figure out whats wrong. It kicks on and cools a little but when I accelerate the air starts to blow out of the defroster and not the main vents. I have heard that this can be a vacuum leak. I looked for the "canister" that is under the passanger side wheel well but there is nothing there, is there supposed to be one on my truck?

And what is this black box that the a/c line goes into? I think i need to replace mine but is it the cause of the problem? how much would one of these run?





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Old 05-30-2012, 04:00 PM
FireRanger FireRanger is offline
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Default Re: Yes, another a/c question!

The controls for which vents the air flows out of is vacuum operated. The vacuum line is either broken or disconnected. Follow the line from end to end:

- Manifold vacuum port on the driver side of the engine
- Wraps around the back of the engine and goes under the air filter box
- There is a vacuum reservoir ball under the air filter box it connects to
- Another line out of the reservoir into the cab behind the glove box
- Into the HVAC control panel
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Old 05-30-2012, 04:21 PM
swopey swopey is offline
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Default Re: Yes, another a/c question!

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Quote:
Originally Posted by FireRanger View Post
The controls for which vents the air flows out of is vacuum operated. The vacuum line is either broken or disconnected. Follow the line from end to end:

- Manifold vacuum port on the driver side of the engine
- Wraps around the back of the engine and goes under the air filter box
- There is a vacuum reservoir ball under the air filter box it connects to
- Another line out of the reservoir into the cab behind the glove box
- Into the HVAC control panel
Ok I definately cant find a line going from the I/M, I do see the reservoir ball and it has two lines out of it. one of which goes toward the passanger side firewall and the other is ran to some "solinoid" or "resister" on the same side as the ball maybe 5 inches from the alternater. Do i need a picture of where that one runs? or is mine so far ghetto rigged there is no hope?
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Old 05-30-2012, 05:03 PM
FireRanger FireRanger is offline
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Default Re: Yes, another a/c question!

If you keep following the line after that little coupler near the alternator, it will lead you to the beginning at the intake manifold.
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Old 05-30-2012, 06:01 PM
swopey swopey is offline
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Default Re: Yes, another a/c question!

Quote:
Originally Posted by FireRanger View Post
If you keep following the line after that little coupler near the alternator, it will lead you to the beginning at the intake manifold.
i will take a picture tomorrow but I thought it went into that harness as a wire? by the alternator.
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Old 05-30-2012, 06:24 PM
FireRanger FireRanger is offline
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Default Re: Yes, another a/c question!

It's not wire. Its vacuum line. And it is in wireloom to protect it.

You're losing vacuum somewhere.
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Old 05-31-2012, 03:41 AM
stynkmonkey stynkmonkey is offline
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Default

I am having the same issue. Plus I think I'm leaking refrigerant.
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Old 07-24-2012, 02:26 PM
swopey swopey is offline
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Default

So the lines are fine and there isn't a visible leak that I can see but now my compressor won't kick on at all? Maybe it has a freon leak some where?

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Ps there are three vacuum lines that go one to the egr valve? One to the intake manifold? And another where? Is this correct?
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a/c, black box, blower, defroster

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