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**PROBLEM SOLVED** 2003 Passat B5.5 1.8T Problems **READ MORE INFO BELOW**

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Published on Jul 10, 2010

August 16, 2010

Yup, I was right. Replaced the bleeder valve and the car is all good now. It idles much smoother too after all the hoses and throttle body cleaning, new d.v., and a new check valve. :)
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Ahh looks like it's the bleeding valve (06B 103 245) the culprit.
Mine is hollow in the inside and there is another check valve (06A 133 528 D/A) connected to it so I thought it was fine but when I was about to return the new bleeding valve, I noticed there is actually moving thing in the inside and the old one is completely hollow (I wonder where the moving thing went)
I'm going to change it now, will update again later.
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August 14, 2010 Updates

Replaced Check Valve (06A 133 528 D/A) today, car is still idling rough, flashing CEL but it's solid/no CEL when the car is moving.

What I have done so far:
1. Replaced Turbo Inlet Pipe
2. Replaced D.V.
4. Did Smoke Test, No Vacuum Leak
3. Replace Check Valve (06A 133 528 D/A)
4. Cleaned Throttle Body and All Pipes under Intake Manifold

Codes keep reappearing:
17705 - Pressure Drop between Turbo and Throttle Valve (check D.V.!)
P1297 - 001 - Upper Limit Exceeded
And All Cylinders Misfire

Car idles fine when I squeeze this hose marked in green:
http://www.youtube.com/watch?v=KAmAR2...
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August 11, 2010 Updates

I was moving the hoses leading to a check valve (06A 133 528 A) to get more room for my screwdriver and that thing broke at one end. Dealer told me there is a new revised valve, same part number but with letter D instead of A. Here's the new part number 06A 133 528 D

Looks like I won't be needing the bleeder valve anymore (06B 103 245). It is hollow in the inside, no springy or moving parts so I cleaned it up with some WD40. I also cleaned up all the hoses. I put it in order anyway just in case. I haven't checked the housing. Hopefully I'll get the replacement parts tomorrow and manifold will come off again. Can't get access to the bleeder housing without removing it.
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August 10, 2010 Updates

did the smoke test, no leak.

noticed the car was idling fine when I squeezed this hose in green (look at picture below)

http://img21.imageshack.us/img21/9290...
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August, 2010 Updates

New Diverter Valve didn't help.

I removed the intake manifold to inspect any leak under there and didn't find any.

Well now, everything is put back together. cleaned throttle body and intake manifold, new gasket. All check valves are fine.

Car still stuttering at idle but not as bad but this time I can feel the car gives more power, maybe the cleaning kinda helped. I think it's still slowly leaking oil from somewhere. With the oil cap off, it sounds like sucking in air, same when oil dipstick off. I guess there is still vacuum leak somewhere.

Codes keep reappearing:
17705 - Pressure Drop between Turbo and Throttle Valve (check D.V.!)
P1297 - 001 - Upper Limit Exceeded
and All Cylinders Misfire
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After I replaced the cracked turbo inlet host, I'm still getting this code with all cylinders misfired.

17705 - Pressure Drop between Turbo and Throttle Valve (check D.V.!)
***********P1297 - 001 - Upper Limit Exceeded

Replacing the cracked turbo inlet hose didn't help.
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Plugs were replaced recently. Coils replaced with the improved version few months ago.

Codes before replacing the cracked turbo inlet:
16840 - EVAP System: Very Small Leak Detected
***********P0456 - 001 - Upper Limit Exceeded - Intermittent
17536 - Fuel Trim: Bank 1 (Mult): System too Lean
***********P1128 - 001 - Upper Limit Exceeded
16555 - Fuel Trim: System Too Lean: Bank 1
***********P0171 - 001 - Upper Limit Exceeded
17519 - Oxygen (Lambda) Sensor Regulation: Bank 1: System too Lean
***********P1111 - 002 - Lower Limit Exceeded
16891 - Idle Control System RPM Higher than Expected.
***********P0507 - 001 - Upper Limit Exceeded - Intermittent
17705 - Pressure Drop between Turbo and Throttle Valve (check D.V.!)
***********P1297 - 001 - Upper Limit Exceeded
17544 - Fuel Trim: Bank 1 (Add): System too Lean
***********P1136 - 001 - Upper Limit Exceeded
and All Cylinders Misfire
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Link to my passatworld thread
http://www.passatworld.com/forums/sho...

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