Turbo boost level

[stuh]

Just been out for one of my last drives in the old girl before she goes

However i noticed that when i got back and turned the engine off, the boost guage stayed at zero, as opposed to falling back to the bottom of the guage. Am i likely to have a wastegate stuck or something?

Is it something that someone with my VERY limited mechanical skills can put right?

[joust]

I can't remember what mine does, but zero is normal if the guage is powered up without the engine running. The inlet will be at atmospheric pressure which is +/- 0 bar

All the turbo's I've seen go back to 0 after turning the key off.

J

[LaurenceFrost]

No this is normal.

As Justin says, zero reading means atmospheric pressure (~1 bar). Below zero is vacuum and above is where the fun starts.

Zero is also where the gauge sits when it has no power.

A sticky wastegate is easily identified by the boost going over the maximum (0.7 bar on the 3.0 engine).

[Ash GTO 3R]

Mine reads -0.5 when it is off, do I have a problem?

[stuh]

It's always settled back at -0.5 for the past 3 years!

Now it's sitting at 0 with the engine off. All very odd!

[Ash GTO 3R]

Factory HELP!

What does it mean please?

[ThatPhilBrettGuy]

To be honest if it reads 0.7 BAR under full load, and your brakes still work it's not an issue. Boost gauges IMHO are of questionable use 99% of the time. An over boost light would be enough.