faulty ECU pressure sensor?

Mihnea Cotet mik at info.fundp.ac.be
Mon Jun 3 01:39:53 EDT 2002

At 18:09 2/06/2002 -0400, you wrote:
>I have recently noticed that my stock boost gauge will intermittently show
>0.0 upon lift-off of the throttle and 0.2 at idle.  Prior to this it would
>always show 0.2 at lift-off and 0.4 at idle.  I also noticed that the
>reading upon turning the key to the 1st position has been 0.9 instead of
>its usual 1.0.  The only other piece to add is that my VDO boost
>gauge reads a constant 17 inHg at idle no matter if the stock gauge
>reads 0.4 or 0.2.  Could this be a faulty pressure sensor at the ECU?  I
>have not modified the ECU.  If this is the case, could this be fooling the
>computer and hurting anything?  Car runs great during these intermittent
>periods.  Is there something else that could be the problem, like the
>stock gauge?

I'd rather tend to think that you have a Dash display problem, more than a
MAP sensor issue...

Just my 0.02,


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