S40 V40: - 'ECU problem'

DaveSV40 · May 11th, 2009, 23:01

Or so I thought.

The car (a 2.0l petrol) had been intermittently running badly. It would, usually after warming up, lose all power and it sounded like a VW Camper van. The local garage told me it was the ECU.

I've had the ECU tested, and apparently there is nothing wrong with it. So, presumably the problem is with a sensor or the wiring to a sensor?

Has anyone else had a problem which sounds similar?

If not, how do I go about finding out where the fault is?

knobby · May 11th, 2009, 23:38

Hi there.

You need to get your Codes read. If your car has a problem with a sensor the ECU usually throws up a code. By reading this code you can then tell which sensor is causing the problem.

For the garage to assume its the ECU is a bit lame....

Hope this helps

Matthew

DaveSV40 · May 11th, 2009, 23:44

Quote:

Originally Posted by knobby

Hi there.

You need to get your Codes read. If your car has a problem with a sensor the ECU usually throws up a code. By reading this code you can then tell which sensor is causing the problem.

For the garage to assume its the ECU is a bit lame....

Hope this helps

Matthew

Sorry, I missed that bit out; they told me it wasn't holding any codes.

stevo48 · May 11th, 2009, 23:53

sounds like ignition coil breaking down but don't hold me to that.
There are a number of sensors on these cars but I'm not sure which one it might be.

DaveSV40 · May 14th, 2009, 14:09

Quote:

Originally Posted by stevo48

sounds like ignition coil breaking down but don't hold me to that.
There are a number of sensors on these cars but I'm not sure which one it might be.

Thanks, stevo. Changed the ignition coils, and it seems (touch wood) to have cured it.

May 11th, 2009, 23:01	#1
DaveSV40 Junior Member Last Online: Oct 14th, 2014 21:34 Join Date: Oct 2008 Location: Ashford	'ECU problem' Or so I thought. The car (a 2.0l petrol) had been intermittently running badly. It would, usually after warming up, lose all power and it sounded like a VW Camper van. The local garage told me it was the ECU. I've had the ECU tested, and apparently there is nothing wrong with it. So, presumably the problem is with a sensor or the wiring to a sensor? Has anyone else had a problem which sounds similar? If not, how do I go about finding out where the fault is?

May 11th, 2009, 23:38	#2
knobby Member Last Online: Apr 16th, 2024 12:37 Join Date: Apr 2007 Location: Talbot Green	Hi there. You need to get your Codes read. If your car has a problem with a sensor the ECU usually throws up a code. By reading this code you can then tell which sensor is causing the problem. For the garage to assume its the ECU is a bit lame.... Hope this helps Matthew

May 11th, 2009, 23:53	#4
stevo48 Premier Member Last Online: Jul 9th, 2020 20:08 Join Date: Dec 2007 Location: Halifax West yorkshire	sounds like ignition coil breaking down but don't hold me to that. There are a number of sensors on these cars but I'm not sure which one it might be.

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