TT (Mk1) Discussion Discussion forum for the Mk1 Audi TT Coupe & Roadster produced from 2000-2006

Back to the grind of a solution---getting better

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Old Jun 12, 2007 | 05:29 AM
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Default Back to the grind of a solution---getting better

Evan you were right found TWO air leaks on intake side now runs smooth with no cells BUT no Boost or Vac. Could it be N75 as when you found that broken wire with Intermittant current maybe damaged valve ? Any way the yellow wire on the N75 has constant power to it even with ing off ? mine does? Oh the mysteries ontrying to think oneday I'll get it right!!
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Old Jun 12, 2007 | 06:26 AM
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Default I had broken wire to N75 ...

ECU goes limp when communication w/N75 is lost.
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Old Jun 12, 2007 | 06:36 AM
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I dont think a bad valve would cause the low vacuum
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Old Jun 12, 2007 | 06:44 AM
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Default No Boost OR Vac is your gauge hook-up (or lack thereof)

N75 has nothing to do with Vac readings..
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Old Jun 12, 2007 | 06:58 AM
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Default gauge is ok but cann't get vac can not figure it out have to check line

from n75 to wastegate once engine cools down
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Old Jun 12, 2007 | 07:42 AM
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Your Gauge is either bad or your hose to the "T" fitting is crimped or busted. The engine will ALWAYS have vacuum at the manifold at idle. If the hose from the N75 to the wastegate is bad you'll have an overboost situation and I don't think that's your issue..

The N75 has absolutely NOTHING to do with normal idle or any running for that matter when not on boost
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Old Jun 12, 2007 | 07:55 AM
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Default but no vac at connection, no blockage of boost line and engine never spools up

for boost Runs as a N/A car turbo is doing nothing Block 115 said call for boost is trere but not making any. Guess when I did work must have pulle something loose and now I CAN NOT FIND IT
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Old Jun 12, 2007 | 08:09 AM
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Default No Vac at connection?

I assume you're hooked to the FPR line?....That hose goes directly to a nipple under the manifold. And that braided line is known to deteriorate. This means your fueling is not being ramped up when boost is called for which is a whole nother problem. You've STILL got something off or disconnected..
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Old Jun 12, 2007 | 08:14 AM
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pressure test again---- thought after 3x I had it guess not
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