vacuum canister needed? - JeepForum.com
 
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post #1 of 3 Old 11-10-2013, 07:49 PM Thread Starter
roadcruzer
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2001 TJ Wrangler 
 
Join Date: Sep 2013
Location: Farwell
Posts: 39
vacuum canister needed?

My jeep does not have the canister located under the drivers side front bumper. that's probably why my cruise and heater control does not work. Can't I just plug off the end of the vacuum hose to get vacuum I need or do I have to have the canister?

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post #2 of 3 Old 11-10-2013, 10:09 PM
jm8881
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1996 ZJ 
 
Join Date: Oct 2005
Location: Palm Desert
Posts: 826
I believe that's a charcoal canister, not vacuum. However, I think that if it's lines aren't plugged you have a giant vacuum leak.
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post #3 of 3 Old 11-10-2013, 11:24 PM
jnicewan
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1995 ZJ 
 
Join Date: Dec 2010
Location: Norman
Posts: 2,346
The vacuum reservoir is under the battery tray. Make sure the supply line from the intake manifold is all good, not cracked or broken anywhere. It runs from the intake, to rear of engine, across the firewall, tee's to the HVAC inside, keeps going to another tee right at the cruise servo on pass inner fender and then goes forward to under the battery tray. There should also be a vacuum check valve where it connects to the manifold.

If the HVAC is stuck on DEF and nothing else the line is probably broken in half or cracked/split up real bad. If the HVAC works but goes to DEF under acceleration then there is probably a small crack in the line or the check valve is faulty.
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