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klefroid's Avatar
 
Join Date: Jan 2010
Posts: 677
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Turbo boost question 930 3.3

hello,

my boost indicator dusn show me anything. what are the possible causes?
Where can i find the turbo pressure sensor? ( not the overboost sensor)
Thanks a lot. srry for the bad spell

Kurt
Belgium
Old 01-29-2010, 01:49 AM
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Join Date: Jun 2008
Location: England
Posts: 301
It'll either be

1) The Boost Sensor (~$100)
2) The Boost Gauge (~$200)
or
3) The wire connecting the Boost sensor to the Boost Gauge! (Many hours of labour)

Given the age of the car (and unless you've had the engine out recently), it is most like to be the Boost Sensor.

Unfortunately, I don't have a picture but you'll probably have to take your Intercooler off to get at it. But Mark Houghton has been experimenting (with a saw and cut his 'Re-circulatory valve' in half), and the boost sensor is the bigger, red one in this picture.



The hole to the right of the picture is where the Intercooler is attached.

Last edited by tj930; 01-29-2010 at 02:53 AM..
Old 01-29-2010, 02:27 AM
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Quote:
Originally Posted by tj930 View Post
It'll either be

1) The Boost Sensor (~$100)
2) The Boost Gauge (~$200)
or
3) The wire connecting the Boost sensor to the Boost Gauge! (Many hours of labour)

Given the age of the car (and unless you've had the engine out recently), it is most like to be the Boost Sensor.

Unfortunately, I don't have a picture but you'll probably have to take your Intercooler off to get at it. But Mark Houghton has been experimenting (with a saw and cut his 'Re-circulatory valve' in half), and the boost sensor is the bigger, red one in this picture.



The hole to the right of the picture is where the Intercooler is attached.

Thank you, this was answer where i was looking for!
Verry usefull. Respect
Old 01-29-2010, 03:33 AM
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Join Date: Jul 2008
Location: Central Washington State
Posts: 3,776
You can't miss seeing that sensor, it pretty much stares you right in the face almost dead center when looking at the engine, just below the intercooler.

Also, you might find this thread worth reading...especially to troubleshoot the sensor itself.
boost sensor resistance data
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Mark H. 1987 930, GP White, Wevo shifter, Borla exhaust, stock everything else. The result of a massive Pelicanite good will fire recovery effort. Truely an open book, ready for the slippery slopes to modification.
Old 01-29-2010, 08:21 AM
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