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Re: high boost readings

John Shuman writes:
>   Anyone have a clue as to why the boost guage on my 84 5000ST
>   would read 8 to 9 at idle, when hot, and go to 1.7 under full 
>   throttle??  This escapes me, at least the 1.7 part.  I just
>   want to be sure I'm not going to see the head launch it self 
>   through the hood when I pour on the coal.

Perhaps your manifold pressure sensor (built into the ECU) is bad,
or maybe the gauge is miscalibrated.  It should read about 0.4-0.5 bar
at idle.

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