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Grand Cherokee 4.7 Vaccum Question

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Old Aug 11, 2009 | 10:58 PM
  #1  
Dc304's Avatar
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Default Grand Cherokee 4.7 Vaccum Question

I have a Cracked vaccum hose on the wife's '02 Grand Cherokee. I know it's an easy fix, just wondering if anyone might know what function this provides.

Hose comes off throttle body and ends up running underneath vehicle. For some reason none of my manuals have a vaccum diagram for a 4.7. Any input would be greatly apprecited.

Last edited by Dc304; Aug 11, 2009 at 11:14 PM. Reason: add year manufactured
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Old Aug 12, 2009 | 12:09 PM
  #2  
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From: Tenn. and Mich.
Year: 2004
Model: Grand Cherokee
Engine: 4.7L V8
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Originally Posted by Dc304
I have a Cracked vaccum hose on the wife's '02 Grand Cherokee. I know it's an easy fix, just wondering if anyone might know what function this provides.

Hose comes off throttle body and ends up running underneath vehicle. For some reason none of my manuals have a vaccum diagram for a 4.7. Any input would be greatly apprecited.
It goes to the "tank rollover valve & vapor flow control orifice" in the top of the gas tank. My manual doesn't give a vac. diagram for the 4.7L either.
I would tape it up until I could order a new one. It's an important part. It carries fumes and could cause a fire.

Last edited by ol"blue; Aug 12, 2009 at 12:12 PM. Reason: More Info.
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