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T-5R boost gauge

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Old May 17th, 2019, 22:47   #1
GMC
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Default 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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Last edited by GMC; May 17th, 2019 at 23:19.
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Old Yesterday, 17:56   #2
winsox
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Quote:
Originally Posted by GMC View Post
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

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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