Any idea please

Hi Guys

I wonder if you can help please.

I have had an N reg 405 estate, automatic , petrol for about 3 years now.

Other than a few minor problems, i.e new battery, light bulbs etc
relatively trouble free.

However, over the last 4 months or so, I have experienced a weird problem.

As I stop at a junction or similar the engine just cuts out. It normally
starts again quite easily. This will persist for anything from 10 minutes to
all day. Then will disappear for anything from a week to 2 months before
returning.

There appears to be no logical pattern to it ( e.g. weather , length of
running., time of day etc )

Any ideas please ?

David

 

Hi,

No idea, perhaps spark plugs (I'm in doubt, here).

 

It probably has nothing to with your car's problem, but I had the same
problem with a
Volvo 3litre V6 Auto a few years ago and it was a loose conector on the gear
level inhibitor switch.

I suspect if your problem is so intermitant it is probably electrical, I
suspect a sensor of some sort that would stop it stalling under load, such
as crank speed sensor, but I am not familiar with the 405 auto.

Are there any engine management faults listed?

Andy

 

I would say sensors too. You need to get the faults read from the ECU
and go from there. Three things spring to mind from my experiences
with this car. MAP sensor, idle control valve and Lambda sensor, but
it could be something else. The easiest thing to do first is the idle
control valve. Take it off and give it a good clean in carb cleaner
and make sure the valve rotates inside. Allow to dry before refitting
and trying.

 

Hi Guys

thanks for the response and I apologise for the delay in replying ( this
having to work for a living is ruining my social life )

I have no warning lights on, where do I read these management faults or
test the sensor ( is this something I can do or a garage job ? )


Many thanks

David