ECU making strange noises?
 

I've noticed that there now seems to be a stream of whirring and chugging, electrical noises coming from the ecu upon turning the key on and after turning off. Anyone encountered this before? Lasts about 5 seconds

Don't think there is anything mechanical within the main ECU that can make sure noises, the sound is probably coming from somewhere else - see if you can locate it. Not the headlights is it?

Regards

ECU is solid state so don.t think it could make those kind of noises:shrug: - i would be looking at the battery as that is adjacent to the ECU albeit separated by the Plenum wall - see if you have any loose connections - you mention electrical sound so again i would have close look at the battery

It'll be the heater flaps resetting. :}

sounds like under bonnet pump

The 1.8's have an idle air control valve on the inlet manifold, it has a stepper motor which moves a piston inside the valve which regulates the air and therefore the rpm at idle. The stepper motor runs to reset itself whenever the ignition is switched to off and you can hear it whirr while it does this for a few seconds after each engine shutdown. Could it not be this that you are hearing?

:wot::wot::wot:

Like the aviation mechanic's joke about pilot's report :

"heard sounds from behind dash that sounded like someone using a hammer on components"

reply from mechanic was "removed hammer"

Maybe the gremlin needs his or her tools removed. Fnarrr :D

+1 on heater flaps

Thanks for the replies. I think it may well be the heater. It only started doing it this morning though. Audibly anyhow.

Lots of electrics on these cars eh? surprising.

Don't worry about the noise. They all do that Sir.