[V8] Timing belt change - follow up

Sat Sep 15 17:16:44 PDT 2012

Well the wires check out for continuity, and don't seem to be shorting
anywhere.  I'm going to re-wrap it and run it inside some wire loom that
I've got.  But, disconnected or connected the engine behavior doesn't
change.  I think my  problem lies elsewhere.

On Sat, Sep 15, 2012 at 4:01 PM, Allan Vega <allanvega at comcast.net> wrote:

> That's the knock sensor that Scott mentioned in his last email to you.
>
> FYI , that sensor has a torque spec of 11-18ft lbs, certainly not enough
> to crack the housing
> Allan
>
> Sent from my iPhone
>
> On Sep 15, 2012, at 6:44 PM, John Bysinger <doog at bysinger.net> wrote:
>
> > What sensor is underneath the drivers side header?  orange plug under the
> > engine cover on the right side of the intake, routed by the front and
> > timing belt cover and near the power steering pump?  The cable to that
> one,
> > rubber wire coating is completely disintegrated and the plastic casing
> > around the sensor is crumbing.
> >
> > -John
> >
> > On Fri, Sep 14, 2012 at 9:23 PM, Scott Justusson <qshipq at aol.com> wrote:
> >
> >> The problem with rpm codes, is they can be triggered *from* the
> >> intermittent stalling, not the cause of it.  Some have been known to put
> >> some cold water on those sensors to see if anything changes.  This
> sounds
> >> like a MAF symptom to me, are you sure that connector is secure?
>  Another
> >> issue I've seen with the older v8's is an intermittent grounded knock
> >> sensor causing a full max retard of the timing tables.  That DS one goes
> >> into a bracket on the side of the valve cover, and I've seen many that
> were
> >> grounded against the headers. Also, take a look at night, arcing wires
> and
> >> cracked distributor caps many times can send you down much more
> complicated
> >> paths than necessary.
> >>
> >> HTH
> >>
> >> Scott J
> >> 91 v8 Auto 3.6
> >> 92 v8 Auto 4.2 ABT Chipped
> >>
> >>
> >>
> >>
> >>
> >> -----Original Message-----
> >> From: John Bysinger <doog at bysinger.net>
> >> To: V8 <v8 at audifans.com>
> >> Sent: Fri, Sep 14, 2012 10:46 pm
> >> Subject: Re: [V8] Timing belt change - follow up
> >>
> >> Ok, after some help from fellow listers, I was able to rebuild the
> >> passenger side distributor.  I completely re-wired the connector to the
> >> hall sensor, and was able to bench test it with a DC 4.5V source.  I
> >> thought I may have assembled the ring on the cam side incorrectly, but
> >> again, thanks to you guys I was able to confirm I got that ring in
> properly.
> >>
> >> But it's still throwing a 2111 and stumbling over ~2500 RPMs in neutral,
> >> and completely gutless and stalling when in gear.  Just to confirm, I
> did
> >> as SJM's ECU page said and reset the memory by pulling the appropriate
> >> fuse, and trying again, same code.  I pulled the drivers side cover on
> the
> >> timing belt to see if there was any odd movement going on w/ the
> >> tensioner/dampener when it got to those RPMs.  No odd movement there
> >> either.  According to the SJM site 2111 indicates an RPM sensor failure,
> >> but I just replaced both of the sensors under the driver's dizzy earlier
> >> this year, barely 500 miles ago.  I rechecked their harness plugs, both
> >> were secure.  I also inspected the connectors, wiring and hoses that
> run on
> >> top of the engine, no real visible issues that I can tell visually.
> >>
> >> I'm really at a loss as to where to look next.  I have time this
> weekend to
> >> tinker with it, I'm hoping I can get it figured out before the Seattle
> fall
> >> rain gets here.
> >>
> >> Any tips/suggestions at this point would be very helpful.  I do have 'an
> >> audi guy' who has a shop 15 miles from here I could take it to, but
> right
> >> now driving it isn't possible with the stumbling, I'm trying to avoid
> the
> >> cost of getting it there if I can.  I blew my Audi budget on the timing
> >> belt and PS hoses.
> >>
> >> -John
> >> '90 V8Q
> >>
> >> On Thu, Aug 16, 2012 at 8:42 PM, John Bysinger <doog at bysinger.net>
> wrote:
> >>
> >>> Well I got the timing belt completed, thanks for the recommendation to
> use
> >>> BlauParts, their kit and tool rental made it nearly a breeze.  The kit
> was
> >>> amazingly complete with seals, pulleys, fluids etc.  I also replaced
> the
> >>> fan and oil pump bearings, because like everyone else said, I was in
> there,
> >>> might as well.
> >>>
> >>> I used this for reference while I was doing the work, proved very
> helpful:
> >>>
> >>>
> http://www.audipages.com/Tech_Articles/enginemechanical/A8timingbeltreplacement.pdf
> >>>
> >>> It was nearly the same, just different Dizzy setup on the back of the
> >>> heads.
> >>>
> >>> I also got my leaky power steering fixed while in there, thanks again
> >>> spokanehose, that was the third hose I've had them done, worked great.
> >>>
> >>> But there's always something....
> >>>
> >>> I ended up having to trim about 1.5" off the end of the drivers side of
> >>> the top radiator hose, hose clamp pinched through it causing a leak.
>  Glad
> >>> it was there and not elsewhere in the hose so I didn't have to replace
> it.
> >>> But the one remaining issue I'm having is keeping me from getting it
> back
> >>> on the road. It's only throwing one code: 2111.  Which based on a
> search of
> >>> the list archives is likely the crank position sensor.  Strange.  I
> just
> >>> replaced it and it's partner about 3 months before the water pump gave
> out,
> >>> so I'm pretty sure the sensor is still fine.  Behavior is it starts and
> >>> idles just fine, slowly increase the RPMs and around 3k it starts to
> act
> >>> like it's skipping or stumbling.  When trying to drive, similar
> behavior,
> >>> idles along just fine, try to give it some throttle and it'll stumble
> and
> >>> sometimes stall.
> >>>
> >>> I tried peaking under the dizzy to see if maybe the plugs had come
> loose
> >>> while I was putting the cam lock plates on/off but they look plugged
> in ok.
> >>> I haven't tried re-seating them just yet since there's quite a bit of
> >>> engine bits in the way there and I was losing sunlight.  Thought I
> would
> >>> see if anyone had any suggestions for something to check besides those
> two
> >>> sensors hidden behind the drivers side header.
> >>>
> >>> Only other noteworthy item is on the passenger dizzy there's a sensor
> that
> >>> the plug socket had crumbled a bit, I cleaned it up and made a clamp of
> >>> sorts to hold it in place, could that be my issue?
> >>>
> >>> -John
> >>> john at bysinger.net
> >>> '90 V8Q
> >>>
> >>
> >>
> >>
> >> -- john at bysinger.net
> >>
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> >
> >
> > --
> > john at bysinger.net
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>

-- 
john at bysinger.net