compu_85
Gadget Guy
At the last MI g2g, every A3 / B4 ECU that was opened had a split hose
-Jason
-Jason
Not too difficult - first remove the plastic cover below the windshield on the passenger side to expose the ECU, then loosen a couple of screws attaching the ECU to it's bracket and slide it out.98JettaTDI said:I guess I better replace it then. Any tricks to getting in there?
Yes, it is - vacuum line that operates an air baffle inside the cabin.98JettaTDI said:P2B: did you see my pic update on page 2 of this thread? Is that hose OEM?
No - it was in tip-top shape, and I was in a hurry - but now that I'm still going into limp mode, I'll go back and do it anyway...tditom said:Did you replace the small tube inside the ECU?
No, not exactly clear on how I'm supposed to do that...did you try cleaning the N75 valve?
tdenhartigh said:Hi all, I've replaced all my old boost lines with new silicone tubing lines, but when I was replaced a line near the firewall on the drivers side I think i pulled something apart that I shouldn't have. The old line was all cracked, so it's a good thing I replaced it, but now I can't get the plastic piece to connect properly.
The piece that I'm talking about is here...it's in the upper left corner...you can see a white piece of plastic tube, then the new silicone tube.
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The problem that I'm having is the white piece that's near that foam stuff at the end of the new silicone tubing.
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Here's what the connector piece looks like...
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Any help would be greatly appreciated.
It opens and closes the flapper at the cabin blower.P2B:
... it is vacuum line that operates an air baffle inside the cabin.
Well I've had mine on for more than a year and a half. Almost 40,000 miles now. It looks and feels as it did when new. Even the ends of the hose that attach to the turbo (and are exposed to the most heat) feel like new. And most importantly, no ECU error codes since installing. FWIW, I'm running an RC2+ chip, about 16.5 psi.vwxyzero said:I would really like to know how the silicone tubing is holding up over time? I was considering doing the silicone tubing swap until I talked to a friend who is a VW master tech. For the record he does not work on TDIs (only gassers) but he has had problems with the silicon tubing collapsing over time (about a year and a half.) Hence the request for an update: How is the change over going for those who have done it? And for what length of time have any of you been using it? Any noticeable problems?
Thanks
I haven't seen the ECM installation on an A3, but I can tell you that the process to remove a B4 ECM is different from what was described above. Remove the plastic cover (as above) then remove the cabin filter element and then the holder for the element by way of two or three sliding slips inside (those german engineers!). Remove the nut holding the ECM bracket to the car next to the cable's entrance to the ECM. Lift the bracket up and pull the ECM/bracket assy from the pins holding the other end of the bracket. Now it's free! You can fish it out of the cubbyhole and then follow Simon's remaining steps.P2B said:Not too difficult - first remove the plastic cover below the windshield on the passenger side to expose the ECU, then loosen a couple of screws attaching the ECU to it's bracket and slide it out.
You do not need to disconnect the ECU from the wiring harness - just flip it over, remove 4 torx screws, and slide the ECU cover off. The internal boost hose will now be visible, replacement and re-assembly is straightforward.
Simon
I am not sure which line this is, please someone take a picture.lupin..the..3rd said:What paramedick said.
You want Viton tubing for the injector return lines. McMaster sells this as well. Use the forum search to find the part number (I don't have it handy).
Excelent I am in the process of changing all of mine now. So far the ECU and feed tube (which was cracked) and one of the two lines to the solenoid (behind the battery) ... The solenoid is bad I think as my vent does not open and close with the Recir button.lupin..the..3rd said:Wow I forgot about this thread! 3 1/2 years and 100k miles later, this silicone tubing is still going strong for me, no problems!
#4 injector runs a line to the injection pump.KS97Passat said:Most of the injector return lines are daisy-chained from injector to injector. Another continues on somewhere else.