[s-cars] rit_bellis at hotmail.com

[Robert Myers]

Craig,

Coil failures are, IME, more gradual.  They just start to weaken and 
progress, eventually, to the "He's dead, Jim" stage.  In the early 
stages a miss develops at fairly high boost levels.  As the coil 
continues to weaken the missing happens at lower and lower MAP levels 
until, eventually it becomes a full-time miss.  At this point it 
mimics a failed POS.

The knock sensors signal the ECU to instantly dial back the timing 
advance and result is an instant decrease of power.  There is nothing 
slow about it.

Bob

At 06:32 PM 2/12/2008, Craig Lebakken wrote:
>Hi Teddy-
>
>When the coils failed, it felt just like a cylinder was taken away. Once it
>had progressed to this point, however, it did occur to me that I had felt
>some odd behavior in the day or two prior, specifically a rough idle.
>Complete failure was obvious about the entire RPM range, and especially at a
>loaded low rpm state, i.e., mid throttle, 2-2.5K rpm, 3rd gear.
>
>WOT miss is an entirely different thing. Or things. Sometimes, I can hear a
>ping, and the knock sensors are backing things off, in a stuttery, slow
>sorta way. Othertimes, it seems to overboost, and cutoff is sudden and
>complete. My wife and kids keep me pretty busy, so I have not been able to
>look into this for, ummm, a couple of years now. So 7/9 throttle is where I
>am at, and mit RS2, that is more than enough to get me in trouble....
>
>Is that a "stock" 155K 92S4?
>
>Craig
>
>On Feb 12, 2008 11:29 AM, Theodore Chen <tedebearp at yahoo.com> wrote:
>
> > craig, what does the miss feel like?  is it a stutter or hesitation?  or
> > does it show up as a leveling off in power?
> >
> > my car is a little inconsistent in power output at WOT, and it shows up as
> > a leveling off in power.  however, last weekend, i felt several definite
> > stutters at WOT.  i'm wondering if my coils are starting to go - my '92 has
> > 155k miles and the coils are original as far as i know.
> >
> > -teddy
> >
> > ----- Original Message ----
> > From: Craig Lebakken <lebakken at gmail.com>
> > To: s-car-list at audifans.com
> > Sent: Monday, February 11, 2008 10:26:18 AM
> > Subject: [s-cars] rit_bellis at hotmail.com
> >
> >
> > Rit
> > wrote:
> >
> > I
> > bought
> > one
> > of
> > the
> > last
> > 034
> > kits
> > with
> > coils
> > included.
> > No
> > problems
> > for
> > the
> > last
> > 24k
> > miles.
> > I'd
> > trust
> > either
> > kit.
> > dif
> > in
> > price
> > is
> > because
> > apikol
> > still
> > includes
> > the
> > coils,
> > whereas
> > with
> > 034,
> > you
> > go
> > get
> > coils
> > at
> > the
> > stealer,
> > but
> > use
> > their
> > harness.
> > I'm
> > not
> > hot-rodded
> > at
> > all
> > though,
> > so
> > no
> > real
> > challenge
> > to
> > the
> > system.
> > _______________________________________
> >
> > I
> > bought
> > the
> > 034
> > conversion
> > almost
> > two
> > years
> > ago
> > -
> > with
> > the
> > 115L
> > coils.
> > Two
> > of
> > those
> > coils
> > have
> > gone
> > out
> > within
> > the
> > last
> > two
> > months.
> > Swapped
> > them
> > all
> > over
> > to
> > R's
> > this
> > weeknd
> > (thanks
> > Alvin).
> >
> > FWIW
> > -
> > as
> > picky
> > as
> > I
> > was
> > about
> > this
> > install,
> > one
> > place
> > where
> > I
> > blew
> > it
> > was
> > where
> > the
> > harness
> > comes
> > up
> > and
> > over
> > the
> > cyl
> > head.
> > It
> > wore
> > through
> > the
> > anti
> > wear
> > through
> > sleeving,
> > and
> > shorted.
> > The
> > car
> > began
> > to
> > exhibit
> > occasional
> > bucking,
> > then
> > keep
> > going,
> > then
> > a
> > couple
> > of
> > days
> > later
> > a
> > no
> > start
> > in
> > a
> > parking
> > lot.
> > Thought
> > it
> > was
> > the
> > fuel
> > pump.
> >
> > Hood
> > up,
> > scratching
> > my
> > head
> > I
> > see
> > the
> > harness
> > on
> > the
> > cyl
> > head.
> > Couldn't
> > really
> > see
> > if
> > it
> > had
> > worn
> > through,
> > so
> > I
> > folded
> > up
> > a
> > couple
> > of
> > business
> > cards
> > and
> > slipped
> > them
> > in
> > between
> > the
> > harness
> > and
> > the
> > head.
> > Bingo
> > and
> > I
> > am
> > on
> > my
> > way.
> >
> > Called
> > up
> > 034
> > and
> > ordered
> > the
> > #2
> > harness
> > -
> > and
> > never
> > heard
> > from
> > them
> > again.
> > Still
> > running
> > the
> > hightemp
> > tape
> > fix.
> >
> > Also,
> > the
> > 115R
> > coils
> > did
> > not
> > fix
> > my
> > WOT
> > miss.
> >
> > Craig
> > L
> > 94S4
> > RS2
> > _______________________________________________
> > S-CAR-List
> > mailing
> > list
> > S-CAR-List at audifans.com
> > http://www.audifans.com/mailman/listinfo/s-car-list
> >
> >
> >
> >
>_______________________________________________
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>
>
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>2/12/2008 3:20 PM