Intermittant Engine fault on Vauxhaul Astra

#11

Thanks for comment, sometimes I have a nasty habit of thinking too
complex at times due to the electronics I have to fill my brain with
these days.

The connection of a neon is most interesting and one assumes that its
the back EMF genreated by the coil when ignition amp open circuits
the induced coil current that allows the mains neon to flash assuming
the coil not o/c'd. Question, if one disconnected amp module from
coil, breify shorted coil's LT side to vehicle ground with +12v
present at its hot end would neon still emit single pulse to show LT
coil integrity when this fault appears. Migh have some uses this
method as well the normal DVM voltage, continuity checks.

Anyhow, many thanks for comment will try this method.

regards

Dave

On Sun, 07 Dec 2003 10:54:05 +0000 (GMT), Dave Plowman
<dave.sound (AT) argonet (DOT) co.uk> wrote:

Quote:

In article <8dd5tvg7c3ogk4dd9h57i65in3jof13oeg (AT) 4ax (DOT) com>,
Dave Morgan <> wrote:
However, would anyone know if I could pulse the amp module (in fault
mode) via a series current limiting resistor from the 12 volt battery
supply (Engine Management Unit of course disconnected from amp module)
to generate a spark at plug. Maybe a bit technical but would serve to
eliminate distributor pulse coil as mentioned above.

Easier to eliminate the pulse coil surely? Unless it's some fancy solid
state device it can be measured with a DVM. Coils usually fail open
circuit. The one on mine (not Vauxhall) has a resistance of approx 1000
ohms.

Another way to check for primary operation is to wire a mains neon across
the +/- terminals of the coil. It should flash when the engine is turned.

#12

With pleasure

regards
Dave

On Mon, 8 Dec 2003 22:34:35 -0000, "Exarkun"
<Exarkun (AT) the-sith (DOT) freeserve.co.uk> wrote:

Quote:

Dave,
I have the same engine in my Nova. (C14NZ). Sounds very much like the
problems that I'm having. If you happen to solve this, will you please tell
me what you finally did to fix it.

#13

Thanks
--
-Exarkun.

-So, You Think you're A Fish....... Do You?

<Dave Morgan> wrote

Quote:

With pleasure

regards
Dave

On Mon, 8 Dec 2003 22:34:35 -0000, "Exarkun"
Exarkun (AT) the-sith (DOT) freeserve.co.uk> wrote:

Dave,
I have the same engine in my Nova. (C14NZ). Sounds very much like the
problems that I'm having. If you happen to solve this, will you please
tell
me what you finally did to fix it.

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Intermittant Engine fault on Vauxhaul Astra

Miscellaneous UK car topics Other UK car topics (uk.rec.cars.misc)

Re: Intermittant Engine fault on Vauxhaul Astra - 12-08-2003 , 11:41 PM

Re: Intermittant Engine fault on Vauxhaul Astra - 12-08-2003 , 11:41 PM

Re: Intermittant Engine fault on Vauxhaul Astra - 12-09-2003 , 03:26 PM