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2004 1.8t Passat w/ko4
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Discussion Starter · #1 ·
White Black Automotive air manifold Gas Automotive exhaust
White Black Automotive air manifold Gas Automotive exhaust
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also have a random hose coming from the intake manifold just chilling i have the important stuff hooked up and have the 034 motor sports pcv so have some deletes but this has been disconnected since i got it and i have no idea where it goes. As well as the black thing with the o ring and that gray connector, all been disconnected since i’ve had the passat which is under a year. any insight on where these go would be much appreciated as i’m sure they’re not there for nothing but i haven’t had any major issues really.
 

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That plug is the engine speed sensor. Someone probably replaced it and didn't bother cutting out the old one as it is snaked all through the harness. Check behind the oil filter bracket on the block for the replacement. The car shouldn't start without it.
 

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2004 1.8t Passat w/ko4
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10 Posts
Discussion Starter · #3 ·
Okay so it’s fine to just leave? Any idea on the random clip? Also does anyone have a size or part number for this? It’s the tube connected to the n75 and the turbo hoping that’s the only reason it throws overboost.
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