ok..i had a code 33, low vacuum at MAP and i had checked it out and it was good. It was connected under the map and it ran back behind the engine....i tugged and it was good....but i decided to check again....and when i actually followed it back with my hand i found that it was not plugged into anything!!! no vacuum is definitely LOW vacuum so where does it go? into the TBI unit? thanks a mil

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Rick
90 Camaro RS 305 TBI
400 small block, Hooker 1 3/4 LTs, Random Tech Cat, Hooker aero chamber cat back on the way!!
TH700-R4 with Trans-Go shift kit (corvette servo here...but not installed yet)
MacEwen Motorsports White Gauge Overlays
14" K&N X-Stream Open Element
GTS Headlight and Taillight covers
5% Limo Tint all around
Classic White Chevy Bowtie sticker on rear window
http://www.geocities.com/esvalenz

Man if my camaro were a rice-rocket all those mods would give me what...easily 50-60 hp!!!

"Just because I've done it, doesn't mean I knew what I was doing!" - Me

 

The hose isn't hooked up to your MAP sensor which is on your firewall. That hose needs to be hookedup to that.


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, Jon (350 TBI!)
91 Red My website

 

The vacuum line runs to the back of the TBI unit. If this line isn't plugged then you probably have an irregualr idle to. The vacuum port is on the back of the TBI unit, low and in the center. Hope this helps.

-Lars