Dodge still uses speed density in all of it's vehicles.
brian cropp
> -----Original Message-----
> From: owner-dakota-truck@bent.twistedbits.net [mailto:owner-dakota-
> truck@bent.twistedbits.net] On Behalf Of Michael Maskalans
> Sent: Tuesday, May 18, 2010 10:21 PM
> To: dakota-truck@dakota-truck.net
> Subject: Re: DML: 5.7L HEMI EGR valve?
>
>
>
> On May 18, 2010, at 11:00 PM, jon@dakota-truck.net wrote:
>
> > also, how does
> > the computer "know" that the valve is bad?
>
> I wouldn't know on a Mopar, but I believe the HEMIs have moved to a
> MAF setup, have they not? If that's the case it's probably the same
> as the VW setup: compare requested EGR to actual MAF versus throttle
> position. If MAF is showing too high or low a value for a requested
> EGR value at a given throttle position and RPM, it knows something is
> wrong with the air flow and assumes EGR function.
>
> It would also be possible to directly sample the EGR if it is
> electronically actuated of course.... I'm sure there's a test
> procedure out there for the particular codes set. Finding it is the
> issue.
>
> Good luck,
> Mike
> Glad to have Moby the great white whale back. A new ECM in my
> friend's 24v and I'm not daily driving the Dakota anymore.
>
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