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D4 VEA Exhaust gas pressure sensorViews : 2744 Replies : 15Users Viewing This Thread : |
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Jan 30th, 2023, 21:26 | #1 |
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D4 VEA Exhaust gas pressure sensor
Wondering if anyone can help with some tips on removing the pipe connected to this sensor?
The heat shield for the turbo seems to be in the way/ I say seems to as visibility isn’t the best. Engine code : D4204T5 |
Jan 30th, 2023, 22:30 | #2 |
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There is a banjo bolt at the lower end ,14 or 15 mm spanner I believe . these pipes cannot be cleared of soot as the bore is so small and the pipe so long. and a bend half way along .
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Feb 4th, 2023, 16:13 | #3 | |
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When the pipe was removed the banjo bolt was surprisingly clean but the actual sensor aperture/tip was full of crud. At first I managed to spray some carb cleaner through the pipe but once I tried to push the cable through it became stubbornly blocked so had to work the cable from both ends of the pipe which, after about 30 minutes, eventually broke down the carbon. The toughest task was trying to reach and line up the banjo with the manifold and not drop and loose the copper washer.
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Liam... '96 854 TDI SE, '99 V70 2.5D S, '05 C70 2.0T Collection, '05 S80 2.0T SE, '15 V70 D4 SE Lux Nav. |
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Feb 4th, 2023, 16:27 | #4 | |
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Feb 4th, 2023, 18:07 | #5 | ||
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No idea what warranty work has be carried out to date but judging from the Jubilee clips below the top radiator hose it would appear it's had the coolant reroute modification done. It may have had the EGR cooler replaced, I don't know, but it's due in for service soon so will ask in relation to recall info.
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Liam... '96 854 TDI SE, '99 V70 2.5D S, '05 C70 2.0T Collection, '05 S80 2.0T SE, '15 V70 D4 SE Lux Nav. |
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Feb 10th, 2023, 16:01 | #6 |
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This bolt easily accessible without removing much but the intake? Or will it need the heat shield removing too?
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Feb 10th, 2023, 21:51 | #7 |
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Its just down the back of the engine you work by feel ...not a great deal of room.
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Feb 11th, 2023, 18:46 | #8 | |
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And the space I have is still super slim. Work by feel is an understatement 😅 Left the pipe overnight to soak in some acetone and will go at it tomorrow. Reassembly might look like a lot of dropped bolts. |
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Feb 12th, 2023, 13:34 | #9 |
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To stop you from loosing the copper washer you could tie/loop a length of thread through the banjo and copper washer whilst you get a start on the bolt, and then pull the thread out before tightening the rest of the way.
Just to add I removed and cleaned the inlet manifold pressure sensor yesterday and, at first sight, I thought it was melted but was actually heavily encrusted in carbon deposits. I gently removed the deposits with a miniature screwdriver, an old toothbrush and carb cleaner. Apologies, no pics prior to cleaning as my gloves were filthy.
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Liam... '96 854 TDI SE, '99 V70 2.5D S, '05 C70 2.0T Collection, '05 S80 2.0T SE, '15 V70 D4 SE Lux Nav. |
Feb 13th, 2023, 10:14 | #10 | |
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I will attach a stock photo of the engine with the bolts I had to remove just to view the banjo bolt. One of them hidden behind the turbo actuator. Then the lower heat shield still blocks the banjo bolt but there is just enough room to get a 14mm spanner in the do MANY quarter turns. Your tip with the thread helped a lot and it is now back together, engine light cleared and no DTCs as of yet. A low profile ratchet spanner may fit but it really is tight for space and make sure you keep a magnet on hand to collect dropped bolts and they don’t fall through they get trapped behind the lower heat shield. |
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Tags |
d4 vea, exhaust gas, sensor tubing |
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