Odd vac issue - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Grand Cherokee & Commander Forums > ZJ Grand Cherokee Forum > Odd vac issue

Thanksgiving/Black Friday/Cyber Monday Deals at JeepinOutfECGS Black Friday Sale!!Gear Installs at CCOR Special

Reply
Unread 06-29-2013, 05:36 PM   #1
ZerolFaithl
Registered User
 
Join Date: Feb 2012
Posts: 43
Odd vac issue

So my '97 zj has never had great heat/AC I've recently realize that the vac from the motor is pulling the AC/heat from the vents or something. When sitting still it blows out of all the vents great, when the jeep starts moving forward it still makes plenty of noise but the only air coming out of anywhere is in the defrost at the dashboard

ZerolFaithl is offline   Reply With Quote Quick reply to this message
Unread 06-29-2013, 06:36 PM   #2
Oldfrog
Web Wheeler
1997 ZJ 
 
Join Date: Feb 2008
Location: Louisiana/Texas
Posts: 4,135
Possible Vac leak..
There is a check valve you can buy and insert into a vac line under the hood at the firewall to stop that. Someone posted pics and the part number here about 2 weeks ago.
__________________
Cajun Recipes and Fishing tips

Words of wisdom, Posted by Zeejay:
"..it's not air, it is the opposite of air... suckage so to speak."

Stalling? Work through Zeejay's list
Oldfrog is offline   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


Thread Tools






Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.