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Blowoff Valve Vacuum Source & Check Engine/VSC/TRAK OFF

Old Mar 25, 2007 | 11:00 PM
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Default Blowoff Valve Vacuum Source & Check Engine/VSC/TRAK OFF

My VSC, Trac Off and Check Engine Light come on after about 1/2 an hour of driving. I have been disconnecting the battery to reset it for the meantime. I do have a question though, when the check engine light comes on, does this actually disable the VSC and Traction Control?

Where are some of you pulling vacuum from for the blowoff valve. I tapped into the vacuum port behind the throttle body that taps into what seems to be an idle air control valve of some sort. I think this may be the source of the check engine, VSC and Trak Off light I am getting.


Any input would be appreciated!
Old Mar 25, 2007 | 11:07 PM
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from my CEL i realized it does actually turn it off.. mine came on from the knn typhoon intake.. and i dont have the stock box to fix it.. reseting the ECU.. works...for a while.. and every now and then it shuts itself off.. you do anything different to it, to make it come on?
Old Mar 26, 2007 | 12:02 AM
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Originally Posted by PakanaHerruus
from my CEL i realized it does actually turn it off.. mine came on from the knn typhoon intake.. and i dont have the stock box to fix it.. reseting the ECU.. works...for a while.. and every now and then it shuts itself off.. you do anything different to it, to make it come on?
Well,

I just installed the turbo kit.....

I read on www.clubxb.com that this is usually connected to an loose gas cap. I reset the ECU, tightened the gas cap and drove the car. It actually came back on after 15 or 20 minutes.

I came back to my house and thought about what it could be. I narrowed it down to two things:

1. My vacuum source for the BOV was incorrect.
2. I need to recirculate the BOV back into the intake track.

This is the hose where I tapped into for the vacuum source:



I am going to try and tap into the vacuum source on the side of the compressor housing and hook the BOV back up. It the code comes back, then I will try and recirculate and see if the code comes back.
Old Mar 26, 2007 | 02:21 AM
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you should tap it into the brake booster vacuum line much better source
Old Mar 26, 2007 | 02:29 AM
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Originally Posted by duck_dodgers_24_5
you should tap it into the brake booster vacuum line much better source
Thank you! I am definitely open for suggestions and will try that out.
Old Mar 26, 2007 | 01:17 PM
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Originally Posted by arizonaturbo
Originally Posted by duck_dodgers_24_5
you should tap it into the brake booster vacuum line much better source
Thank you! I am definitely open for suggestions and will try that out.
get yourself a golden eagle vacuum block and tap into the brake booster as duck dodgers mentioned...thats what I did with my setup...although, that may not fix the problem. All the turbo kits are known to throw codes...my box was lit up like a christmas tree
Old Mar 26, 2007 | 01:20 PM
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where is the brake booster vacuum hose let know plz
Old Mar 26, 2007 | 01:54 PM
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Originally Posted by ALEXB06PR1
where is the brake booster vacuum hose let know plz
look at the firewall on the driverside...find the brake fluid res...now on the firewall you will see something thats flat and round, almost like a plate with a hose coming out of it...theres your vac hose
Old Mar 27, 2007 | 05:28 PM
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I bought some Contact cleaner last night, sprayed the MAF, drove the car for 1/2 an hour and then teh check engine light popped back on.

I iwll try the brake booster vacuum source this evening and hopefully this helps.

I borrowed an OBDII scan tool last night, but it doesnt support the J2534 driver. I still have not been able to pull a code.
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