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S80 '98-'06 / S60 '00-'09 / V70 & XC70 '00-'07 General Forum for the P2-platform S60 / V70 / XC70 / S80 models |
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V70 D5 185, Loss of power, engine system service, EGR?Views : 2017 Replies : 10Users Viewing This Thread : |
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Aug 16th, 2018, 17:58 | #1 |
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V70 D5 185, Loss of power, engine system service, EGR?
My 2006 V70 has recently lost power. Initially this would be intermittent and would happen mid-journey and it was only noticeable when more power was needed eg. when needing to accelerate after cruising on the motorway for a while. But now it lacks power for all driving.
I put my torque pro diagnostic app on it yesterday and got code P0404 for EGR control circuit range/performance. I recently (about 3 months before this issue) cleaned the EGR, just because I thought it would be a good thing to do. I will investigate the EGR and clean it again. Are there any other things I could do to check it? Also, though this seems to be the right area to be looking at, would people recommend doing further diagnostics with a tool that can read Volvo specific codes before I start looking at the EGR? |
Aug 16th, 2018, 18:24 | #2 |
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"Also, though this seems to be the right area to be looking at, would people recommend doing further diagnostics with a tool that can read Volvo specific codes before I start looking at the EGR?"
In one word "YES". Shout out on here for someone with Vida Dice that will help read the codes.....beer tokens usually
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2008 V70 SE D5 Auto 185 ...now 205 Volvo Polestar......190k Passed away - 1999 V70 2.5tdi Auto 340632 miles, RIP. |
Aug 16th, 2018, 20:06 | #3 |
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Yes get VIDA/DICE connection and use the EGR valve test. Will tell you if the valve is stuck or operating.
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2002 V70 D5 |
Aug 17th, 2018, 18:05 | #4 |
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Blank it Off !! but maybe it could throw a code ?
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Aug 17th, 2018, 22:59 | #5 |
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If your code reader can see parameters, read out barometric and boost pressure sensor at igniton only. They should read the same. We get egr codes for boost pressure sensor failure.
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Aug 18th, 2018, 09:14 | #6 |
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Thanks for your responses.
I had another look at the car this morning. It seemed to be back to normal power for the first few minutes, but then it dropped off again. I looked at the barometric pressure and boost pressure with ignition on and they were what I would interpret as the same: (barometric showing 14.5 psi and boost showing 0 psi - I assume the barometric pressure is in psia and boost in psig) I also had a throttle position gauge on display. When turning the engine off I could hear the throttle moving and the gauge showed it going to I think about 0% and back to 90% a couple of times, as I think it should do. I did notice it going between 30% and 90% while driving (only round the block) sometimes when I was moving at constant speed. Another gauge I had on display was the EGR error. This showed -100% with ignition on and a constant 99.2% with the engine running (after oscillating a bit for the first 20 secs after starting). I'm unsure what I should be looking for here though. I'll try to attach screen shots... Last edited by v70windsurf; Aug 18th, 2018 at 09:47. Reason: extra info regarding EGR error |
Aug 18th, 2018, 09:17 | #7 |
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Apr 13th, 2019, 23:13 | #8 |
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Apr 14th, 2019, 11:24 | #9 | |
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Quote:
Where is the boost sensor located V70 D5 185HP. |
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Apr 14th, 2019, 14:43 | #10 |
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Fixed with a new egr position sensor. About £150 from parts for Volvos online.
Easy to fit with about 4 screws. I had the battery disconnected while I did it. |
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