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00 Corolla CE
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Discussion Starter · #1 ·
I am trying to figure out what these 2 tubes are on my Throttle body of my 2000 CE 1zzfe VVTi. I'm pretty sure one my finger is on is the PCV ventilation hose. But the other one just below it ??? Both are 3/8" connections. I want to start my new engine and this is the last puzzle.
 

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00 Corolla CE
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53 Posts
Discussion Starter · #3 ·
These are not coolant lines. There are a total of 5 tubes going to the TB: 2 coolant lines, 3 vacuum lines. One vacuum line goes to the evap gas canister to burn gas fumes to lower HC. One vacuum line goes to PCV valve (same reason). The third one is the one I don't know about. On my picture, this vacuum line is the one I am pointing to.
 
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