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PostPosted: Tue Jul 16, 2013 8:17 am 
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Joined: Tue Jul 09, 2013 6:37 am
Posts: 10
Location: Australia
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Hey guys, on the underside of the coil bracket, there is a small box, I think it would be a noise suppressor at a flying guess, and as per the picture, the other end of the wire isnt plugged into anything on my car...

what does it plug into?

I've discovered that it seems to be only on MK2 GTI Dohc cars, but I really don't know where it goes, and it is the last thing I need to plug in before I can start my car!

download/file.php?id=24846

it is also in this picture too.

cheers,
Gavin


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PostPosted: Tue Jul 16, 2013 9:10 pm 
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Joined: Sat Mar 27, 2004 4:15 pm
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Location: Brantford, Ontario, Canada
it is indeed a noise suppressor/filter to be honest i have no clue where they go, i've never ran it in any of my GTs and i've never had a problem.

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PostPosted: Tue Jul 16, 2013 10:09 pm 
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Joined: Tue Oct 24, 2006 3:09 pm
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Location: Palm Springs: Too hot from June to Oct.!
See if your transmission has one of these:
Image
Any idea what the different parts are?

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PostPosted: Tue Jul 16, 2013 11:33 pm 
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Joined: Tue Jul 09, 2013 6:37 am
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Location: Australia
OH SNAP!

That makes sense haha, it does indeed!

Thanks!!


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PostPosted: Wed Jul 17, 2013 9:31 am 
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Joined: Mon Dec 01, 2003 12:47 pm
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Location: columbus, ohio
the 2 wire monolithic component in your pic is a straight up diode. it shunts the flyback voltage from the coil to chassis ground.

the prong that's indicated in phil's pic is a chassis ground along with a place to attach the engine wiring harness loom.

the actual noise suppressor is wrapped into the loom and clips to the left strut tower. it's function is to provide a ground path for the coil primary while splitting out a lightly conditioned signal to drive the tachometer and to provide the ecu with a proving signal that an ignition event has occurred. the noise suppressor has 3 wires, one to the coil, one to chassis ground, and the signal wire which is brown and runs back into the wiring harness.

the diode and the noise suppressor both help to clean up the electrical noise that gets generated by the big transistor in the outboard ignitor and the collapsing magnetic field around the coil.

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PostPosted: Thu Jul 18, 2013 7:42 am 
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Joined: Tue Jul 09, 2013 6:37 am
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Location: Australia
thank-you very much for that info, I'm going to get some quality shed time in on the weekend, i'll clip it onto that chassis ground and go for final check over.

fingers crossed I haven't forgotten or missed anything, I can't wait to drive it!


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