[V6-12v] Expected MAF output readings...

[Joe - Audi]

Thanks, but I've already cleaned it three times over the last year, 
with no change...

On Mar 19, 2005, at 1:18 PM, T. Jackson wrote:

> I would definitely try cleaning the maf with a 90% or higher 
> concentration
> of alcohol before replacing it.  I was experiencing a lean condition 
> about a
> year ago and removing and cleaning the dirty maf sensor cured it.
>
>
> -----Original Message-----
> From: v6-12v-bounces at audifans.com [mailto:v6-12v-bounces at audifans.com] 
> On
> Behalf Of Joe - Audi
> Sent: Friday, March 18, 2005 4:26 PM
> To: v6-12v
> Subject: [V6-12v] Expected MAF output readings...
>
> Hello all,
>
> I've been running with a lean condition in my '94 100 (non-q, auto) for
> awhile now and have been trying to deny the inevitable cause:  bad MAF.
> (Both O2 sensors throw sporadic control limit exceeded and ProDiag 
> shows
> that they are trying to compensate for a lean condition.  I've also 
> checked
> / replaced everything short of MAF and fuel pressure - I don't have the
> proper tools to check fuel pressure.)
>
> Anyway, I've sampled some MAF output data at WOT approaching 6000 rpms 
> (as
> per advice from other postings on the Internet) to check the g/s flow 
> at the
> MAF and am only seeing around 106 g/s.  There's a post at rb.com where
> someone notes they *think* this should be around 125 g/s for the 12v.  
> Can
> anyone on this list confirm what I should be seeing?  The Bentley 
> doesn't
> give any expected values for this reading (Block 019, line 2) so I have
> nothing to compare against.  (BTW, all the electrical troubleshooting 
> steps
> in the Bentley for checking the MAF come back normal.)
>
> The MAF is ~$450 new  (or ~$250 used) so I want to be absolutely sure 
> that
> mine is bad before I buy another one.
>
> Thanks in advance!
>
> -Joe Bossalini
> '94 100 S
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