In reply to a message from Neil Maldon sent Wed 29 Jun 2016:
A mistake to leave this hanging, my apologies. I thought I
had time and all of a sudden I didn’t. Let’s move on.
About a year after shoving ‘mystery’ into a corner as a
dead loss for both repairer and owner, I was struck by a
bout of depression. It wasn’t caused by my failure and
frustration at not being able to fix the car, that was just
1% added to the 40 or so things that joined together to
make it seen that life wasn’t worth living. Thankfully I
have a firm belief that taking ‘the easy way out’ is wrong
on so many levels, and along with the help of my partner
and one or two health professionals I’m well on the other
side of it now.
So - I had another X300 which began to display (can you
believe it!!) exactly the same symptoms. You might guess
that in my darkness I walked away from it, but as these
things go, I knew I would have to try some things on it
when I felt up to it.
Last week I did, and ignoring the massive list of things
I’d tried on the last (now deceased) car. I simply fitted a
Crank Sensor, the new one I’d bought as an early hope to
fix ‘mystery’.
This latest misbehaving X300 was instantly fixed, all dead
injector problems gone at a stroke. I hope I’m not chancing
my arm too much by saying this, but that little high point
was last Saturday. I’ve run it every day since and it
hasn’t missed a beat, or an injection.
What do I draw from this? Obvious and simple, my failure to
be utterly systematic and methodical was the largest
problem. I may have fitted a new CS and then tried one
more, but when that didn’t fix it I moved on to trying
other things. However, the second car was fixed instantly
by the CS change.
Why didn’t that fix the first car? Because I believe it had
a CS to ECU wiring fault. I could have fitted 10 new
sensors to it and still not fixed it. I’m not even sure I’d
have found that if I’d taken Neil up on his kind offer of
lending me his 'scope, there must have been some signal
getting through to run it on 3. I have no idea what kind of
fault could cause a CS signal to be halved, but better
minds than mine might know or find the answer.
Anyhow, I think its important for all of us to remember
that a faulty CS can cause an X300 engine to run on only
one bank of 3 injectors, and even ‘flip’ to run on the
other 3, but not on all 6 when the engine is up to full
temp.
A pity that ‘mystery’ is dead and gone (well almost!) but
there we have it, got there in the end and found the cure,
but just a little too late for the Patient.
In a curious twist of irony, fixing a Cat has helped to
chase away the Black Dog just a little more. I just never
rest with such issues outstanding, and there’s another one
gone from my shoulders.
I hope…!
Regards
Steve–
Jags on gas
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