A/C problems...need Help as search engine doesnt work ....!!! - Page 2 - JeepForum.com

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post #16 of 24 Old 06-18-2013, 05:02 PM Thread Starter
338WinMag
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2001 WJ 
 
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Location: Campbellton
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I called at the '' Stealership '' .... and juste to evac and pressure test was 125$ plus tax and gods know how much it was for the freon...

so now I know why they call them STEALERSHIP ....

shisshh

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post #17 of 24 Old 06-21-2013, 09:23 PM Thread Starter
338WinMag
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here is something thats funny...

when i have AC on at the recycle cycle... when i go over 1800rpm the AC only blow on top of the vent for the windsheild... not at the feet , not at the front and side vents...

anyone had this problem ???
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post #18 of 24 Old 06-22-2013, 08:03 AM
js12278
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Any trouble with cruise control? Sounds like a possible vacuum leak. Check all lines in engine compartment.
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post #19 of 24 Old 06-22-2013, 08:15 AM
cykaaro
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I was thinking as well. Two things you can do. Check the vacuum line coming into the HVAC controls is in deed holding vacuum, and make sure the connector that goes to the HVAC controls are seated fully and properly.

The beatings will continue until attitudes improve!

HID Quad bi-xenon + foglight retrofit
http://www.hidplanet.com/forums/showthread.php?44572-Jeep-2000-Grand-Cherokee-WJ
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post #20 of 24 Old 06-22-2013, 11:13 AM Thread Starter
338WinMag
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nope cruise work good ... any pictures of which lines i have to check... the ac shop did a test of i had leak is it the same lines he check ?
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post #21 of 24 Old 06-22-2013, 08:27 PM
cykaaro
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If you pull off the lower bezel and upper bezel around the radio, you'll be left with the HVAC controls, which are held in by 4 screws. You can take the screws out, and pull the unit out. The settings where it blows is done by way of vacuum lines. Most issues with that are due to if it's taken out and disconnected, and not seated right putting it back on, can give problems. There's one main feed line to it, black I think, which goes to it through the firewall. I've seen on vehicles where that can be an issue if there's a vacuum leak happening. May not be the issue, but good place to start. Then work your way from there.

I'm thinking it sounds like as the motor is creating more of a vacuum at higher RPM's, it's causing to leak somehow, maybe a small hole or crack, which then causes a vacuum loss and then everything goes through the defrost, which is the default, as without vacuum, whatever setting you want will now not work.

The beatings will continue until attitudes improve!

HID Quad bi-xenon + foglight retrofit
http://www.hidplanet.com/forums/showthread.php?44572-Jeep-2000-Grand-Cherokee-WJ
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post #22 of 24 Old 06-22-2013, 10:49 PM Thread Starter
338WinMag
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thanks for the détails ... its greatly appreciated

the radio was changed maybe they pull something ... will keep you guys posted
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post #23 of 24 Old 06-23-2013, 02:15 AM
cykaaro
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Anythings possible. Just carefully inspect and see if you seen anything obvious or that the connector to the selector switch is off. I had an issue with mine only doing defrost and no cruise when I first got it. Someone had the the little vavle thingy under the hood on backwards so wasn't pulling a vacuum at all.

The beatings will continue until attitudes improve!

HID Quad bi-xenon + foglight retrofit
http://www.hidplanet.com/forums/showthread.php?44572-Jeep-2000-Grand-Cherokee-WJ
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post #24 of 24 Old 07-06-2013, 07:45 PM
robby65
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Quote:
Originally Posted by 338WinMag View Post
here is something thats funny...

when i have AC on at the recycle cycle... when i go over 1800rpm the AC only blow on top of the vent for the windsheild... not at the feet , not at the front and side vents...

anyone had this problem ???
Mine did the same thing and my cruise control worked.
By the passenger headlight/battery tray there was a dried out cracked vacuum hose, repaired it and all is well.
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