Starter turns engine over - engine doesn't fire but stop lights start
flickering (foot well clear of pedals). Wait 30 seconds, flickering
stops. Retry starter and, usually, engine fires and no sign of stop
lights flickering. Sometimes it takes more than one repeat of the
cycle to get the engine to fire.
Stop light switch replaced but no change in problem.
Any ideas, anyone?
Skoda Octavia Ambiente, 1.6 FSi, 2005, 25k miles.
sounds like some weird earth fault
Have you tried the spare key to start it. It could be the chip in the key.
Search on briskoda.net or post there.
Perhaps the diagnostics output might tell you something - you'll need
someone with a OBD-II scanner to access that.
--
Adrian C
> Perhaps the diagnostics output might tell you something - you'll need
> someone with a OBD-II scanner to access that.
>
VCDS would be best.
I've had some pretty good support from Briskoda but, in the end, some
progress has been made by a very old fashioned method. With something
flickering ON that should be off, the only possible source I could
think of was a malfunctioning relay. The Octavia II has two
fuse/relay boxes, one inside the car and one under the bonnet, beside
the battery. With the brake lights flickering, I gave the inside fuse
box a modest slap and nothing happened. When I did the same to the
engine-compartment fuse box, the brake lights stopped flickering and
went out. I was then able to start the car.
The problem is getting worse and it occurs, not only when the engine
is cold, first thing, but now, later in the day when the car has been
standing for a few hours. A slap on the fuse box no longer does the
trick but, while trying to pin down which component was at fault, I
took off the fusebox lid and started tapping the three relays in turn
- of course, when the brake lights were flickering. The last one I
tapped, labelled R4, was the one which was 'microphonic'. After a day
or two, tapping it wasn't enough and I had to waggle it. Of course, I
took out the relay and cleaned up the contacts but I was beginning to
think it might not be the relay but a crack in a copper track in the
fuse board.
This morning, armed with a new relay, I've done the experiment. I had
to drive some way to fetch the part, the car had really warmed up, and
there is no brake light problem with either relay seem OK. This tends
to support the idea that it is a problem with the fuse board with a
crack 'healing' when it is hot. At present the new relay is in place
and I am waiting for the car to cool to see if I still get the
flickering.
Fingers crossed but I suspect it will be over a hundred quid for a new
fuse board and the cost of installing it as I'm nervous about doing
anything too major to the electrics for fear of upsetting the ECU.
Incidentally, I got someone to check the fault codes - they got a
whole stack of codes, none of them clearly indicating where to look.
Thinking and intuition have produced more easily interpretable
results!
I'm reporting the current state in full in case someone else might one
day get the benefit. I'll report back on any further developments.
On Wed, 15 Sep 2010 12:33:43 +0100, Adrian C <em...@here.invalid>
wrote:
See:
http://www.ilexa.co.uk/forum/index.php?topic=25377.0
> Now that I've solved the problem, I've found (by a well known law) a
> 2009 reference to the same thing in a VW Golf 2.0!!
Thanks for the feedback.
Chris
--
Remove prejudice to reply.