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Q: vacuum hose off top of auto trans on 2004 Suzuki Forenza

I have a 04 forenza with the CEL on. While the diagnostic shows a vacuum leak, I searched for about 2 hrs and found a vacuum hose coming off the top of the auto trans, that leads toward the firewall. I cannot find where the other end goes to! There is no connection I can find for it. Any help? Thank you in advance, Jon
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The line coming from the trans is the vent line. Forenza's only have 3 possibles for vacuum leaks: PCV hose, vacuum caps on the throttle body or the EGR adapter gasket located where the plug wires all attach to.
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