[Vwdiesel] 98 TDI no glow

[Tad]

That's great news Jon - glad to help.
The manifold pressure code - that's a notorious problem for those models -
the pressure sensor is actually in the ECU, fed by a looong 'vacuum' hose.
 Once the hoses get old, it starts to leak and you know the rest.
 Apparently there's also a small section of hose *inside* the ECU which may
need attention as well.

On Tue, May 26, 2009 at 9:51 PM, jonathan hoehl <jjhoehl at hotmail.com> wrote:

>
>  Thanks Tad!
>
> I needed to hear that.  Indeed it seems I was barking-up the wrong tree!  I
> just had to be sure everything was right - which it all seems to be, but
> the TIMING was STILL not right!!  I never could get Vag-Com to graph the
> timing.  The engine was always too cold (wouldn't reach operating temp) and
> said it was too advanced to plot - no matter if it was actually too advanced
> or retarded.  By severely rotating the pump - and not jump teeth instead - I
> was able to get the engine to fire-up without cycling the glow plugs.
> Ambient was 50F at the time and indeed did not need to glow when timed like
> this.  I honed-in on this sweet spot, rotating the pump ever so slightly,
> and finally saw a cloud on the screen.  My mistake was not using the full
> range of pump rotation and overcompensating by jumping timing belt teeth
> instead.  Duh.
>
> Now onto the 'manifold control pressure difference', or something like that
> code that keeps popping-up.  I'm thinking I need to replace all of those
> rotting rubber lines, eh?
>
> And, James, I hear that part about staying-up too late.  But what's this
> auto-steering gps thing?  Is that a farm joke?!
>
> Jon
>
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