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850 / S70 & V70 '96-'99 / C70 '97-'05 General Forum for the 850 and P80-platform 70-series models |
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T-5R boost gaugeViews : 643 Replies : 3Users Viewing This Thread : |
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May 17th, 2019, 22:47 | #1 |
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Last Online: Mar 13th, 2023 13:51
Join Date: Dec 2005
Location: Glasgow
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T-5R boost gauge
Where does your boost gauge needle go to on your T-5R?
Mine goes off the scale....way off, about 5mm beyond the end of the scale! I'll try to get a picture when I'm out on Sunday. When on full boost it pulls like a train, but when on full boost for a few seconds, always in 4th or 5th gear, it'll suddenly cut the boost which makes me thinking its over-boosting because maybe the boost sensor (TCV) is faulty? It never happens in 1st, 2nd or 3rd gear as I need to move up a gear before it occurs. I'm thinking about temporarily fitting a scaled boost gauge to see how much boost its actually generating! Any thoughts would be appreciated
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1995 855 T-5R Manual - Gull Yellow 2000 Honda Accord Type R - Red 2003 E46 BMW M3 - Black 2013 V70 D5 R Design - Grey(Daily Driver) 2015 Audi A3 184 TDi Quattro - Grey (The Wife's!) Last edited by GMC; May 17th, 2019 at 23:19. |
May 22nd, 2019, 17:56 | #2 | |
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Quote:
Id check the waste gate actuator pipes and connections onto the TCV. They are know to rot and will give you the issue you are having. Uncontrolled boost with the possibility of a bent rod at low RPM
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Current Cars Volvo 850R Estate 1996 Manual Conversion SLK AMG 350 R172 |
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The Following User Says Thank You to winsox For This Useful Post: |
Jun 23rd, 2019, 21:41 | #3 |
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Last Online: Mar 13th, 2023 13:51
Join Date: Dec 2005
Location: Glasgow
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Thanks again Winsox. Sorry for the delay responding, I've be so busy with work I've just made it back into the garage today! You were spot-on, both pipes running to the actuator & turbo had seen better days. Replaced both and things are back to normal!
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1995 855 T-5R Manual - Gull Yellow 2000 Honda Accord Type R - Red 2003 E46 BMW M3 - Black 2013 V70 D5 R Design - Grey(Daily Driver) 2015 Audi A3 184 TDi Quattro - Grey (The Wife's!) Last edited by GMC; Jun 23rd, 2019 at 21:47. |
Jun 23rd, 2019, 21:43 | #4 |
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Glad u got it fixed !
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Current Cars Volvo 850R Estate 1996 Manual Conversion SLK AMG 350 R172 |
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