arkworks
Member
Also known as "What's going on?" (by Marvin Gaye)
2005 GLS Golf BEW 145,000 Turbo replaced with a K** turbo by VW at 88,521 miles because the original "came apart".
Limp mode comes on if I push it too hard. Boost returns after cycling the key.
I have done the following:
Replaced vacuum lines, peened and RTV silicone to the wobbly vacuum pump outlet nipple resulting in Vacuum now at 23+ .
Measuring Block Graphs: ? how to post these? as a JPG?
011 TURBO
003 EGR
VCDS Output tests:
N75: Actuator arm moves smoothly 1 inch BUT while N75 is cycling 4.8% to 95.6% there is NO CHANGE in boost pressure, isn't this supposed to increase?
EGR test: cycles 250 to 400/stroke
VCDS Basic Settings:
N75 Boost pressure = no change
EGR - off = 370 on = 250/stroke
My questions:
1. The vacuum system holds vacuum for several minutes after I shut down BUT ONLY IF I remove and plug the vac hose to the EGR valve. If I leave the EGR valve attached the vacuum is gone within a minute. Isn't the EGR valve supposed to hold vacuum ? While running the system holds vacuum at 23 with everything attached.
2. From graphs above, the turbo always stops boost at about 80% of requested and the EGR is always over what is requested, what does that indicate?
3. Smoke test at 15 PSI showed: leaking intercooler connector hose which was replaced, re-smoked and no leaks but no change in actual boost.
4. SO, I disconnected vacuum to the EGR valve and engine is now much perkier, boost starts at about 2000rpm and holds to 4000rpm and no codes. I repeated the Output EGR test with the results of 420mm @ 0.8% and 220mm @ 85.7% even though it's vacuum line is disconnected !!? How is the EGR still working??
Measuring block 011 shows actual boost is barely 1000 when 2040 specified even though performance is better??
What's going on?
2005 GLS Golf BEW 145,000 Turbo replaced with a K** turbo by VW at 88,521 miles because the original "came apart".
Limp mode comes on if I push it too hard. Boost returns after cycling the key.
I have done the following:
Replaced vacuum lines, peened and RTV silicone to the wobbly vacuum pump outlet nipple resulting in Vacuum now at 23+ .
Measuring Block Graphs: ? how to post these? as a JPG?
011 TURBO
003 EGR
VCDS Output tests:
N75: Actuator arm moves smoothly 1 inch BUT while N75 is cycling 4.8% to 95.6% there is NO CHANGE in boost pressure, isn't this supposed to increase?
EGR test: cycles 250 to 400/stroke
VCDS Basic Settings:
N75 Boost pressure = no change
EGR - off = 370 on = 250/stroke
My questions:
1. The vacuum system holds vacuum for several minutes after I shut down BUT ONLY IF I remove and plug the vac hose to the EGR valve. If I leave the EGR valve attached the vacuum is gone within a minute. Isn't the EGR valve supposed to hold vacuum ? While running the system holds vacuum at 23 with everything attached.
2. From graphs above, the turbo always stops boost at about 80% of requested and the EGR is always over what is requested, what does that indicate?
3. Smoke test at 15 PSI showed: leaking intercooler connector hose which was replaced, re-smoked and no leaks but no change in actual boost.
4. SO, I disconnected vacuum to the EGR valve and engine is now much perkier, boost starts at about 2000rpm and holds to 4000rpm and no codes. I repeated the Output EGR test with the results of 420mm @ 0.8% and 220mm @ 85.7% even though it's vacuum line is disconnected !!? How is the EGR still working??
Measuring block 011 shows actual boost is barely 1000 when 2040 specified even though performance is better??
What's going on?
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