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Old 03-09-2010, 12:42 PM
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Default vacuum trouble
Hi guys, i just finished a jeep 5.3 swap and i dont know where these two openings on the intake go?? i know they are vacuum but for what? i have tapes one off and given the other one in my evap.. but i dont know if thats right way....



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Old 03-09-2010, 05:02 PM
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The one you have taped up is closed off on mine. Doesnt go to anything. You really dont even need evap either, but for the computer's sake you'll need it, unless you deleted it in the computer already.

You just need map sensor, looks like you got that. And brake booster, and im sure you have that, lol.
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Old 03-09-2010, 06:08 PM
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Lightbulb Bit of Info Fo' you
The port you have taped off is used in the 1999-2002 trucks. The Secondary A.I.R. pump hooks up to it.
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Old 03-09-2010, 06:14 PM
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Originally Posted by ForcedTQ
The port you have taped off is used in the 1999-2002 trucks. The Secondary A.I.R. pump hooks up to it.
In some 99-02 trucks. Mine did not have an AIR pump, and I'm sure lots of Non-CA emission trucks didn't have it either. Just go find a big vacuum cap to put over it.
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Old 03-09-2010, 10:23 PM
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Originally Posted by 00ChevyScott
In some 99-02 trucks. Mine did not have an AIR pump, and I'm sure lots of Non-CA emission trucks didn't have it either. Just go find a big vacuum cap to put over it.
No AIR on mine either...it is my understanding that more trucks came without AIR than with it...
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Old 03-09-2010, 10:25 PM
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i installed an 01 motor & i don't remember anything going there
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Old 03-09-2010, 10:28 PM
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just went out & checked... nothing there but some funky-lookin plastic sealed-nipple-type-thing
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Old 03-09-2010, 11:19 PM
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Originally Posted by 00ChevyScott
In some 99-02 trucks. Mine did not have an AIR pump, and I'm sure lots of Non-CA emission trucks didn't have it either. Just go find a big vacuum cap to put over it.
Originally Posted by budhayes3
No AIR on mine either...it is my understanding that more trucks came without AIR than with it...
Originally Posted by zebra86
just went out & checked... nothing there but some funky-lookin plastic sealed-nipple-type-thing
Allright all you lucky non CA emissions Bastads!

Sorry I forgot the "some" modifier. :
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Old 03-11-2010, 12:52 PM
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Originally Posted by ForcedTQ
Allright all you lucky non CA emissions Bastads!

Sorry I forgot the "some" modifier. :
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