Volvo Owners Club Forum - View Single Post - Engine 850: B5234TR/2.3/20v/T5R: - T-5R boost gauge

GMC · May 17th, 2019, 22:47

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

May 17th, 2019, 22:47	#1
GMC Senior Member Last Online: Mar 13th, 2023 13:51 Join Date: Dec 2005 Location: Glasgow	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 __________________ 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.