Engine Dying On Idle

[Socks]

no fault code appears, although our ubiquitous friend "antipollution fault" does pop up (intermittently, bien sur) on the LCD panel. Car's with a pretty good indy mechanic at the moment and nothing's come to light - he reckons it's an ECU issue. I've passed on how to reset the ECU but he apparently had that info and no joy, so...

 

Any ideas what it might be? Fuel pump was recently replaced to fix a previous issue and AFAIK the exhaust sensors are OK. Just wondering if anyone managed to cure a similar problem?

 

Thanks.

 

Model: 2.0 HPi Exclusive

[paul.h]

I may be wrong but seem to remember something about the brake pedal switch could give the anti pollution warning. I have tried a search for this but it does not seem to be working that well.

[coastline taxis]

not to sure but does your not have a ildle control valve/airflow valve on the front of the engine

[Socks]

just off the phone with the mechanic and he's confirmed it needs a new ECU, unfortunately. Main Dealer price is stratospheric, so unless I can source a new one at considerably less, that's basically it. I'll try the service.citroen site later, plus ebay etc...

 

not to sure but does your not have a ildle control valve/airflow valve on the front of the engine

 

Not sure, but I don't think it's a case of idling too low or anything like that.

[myglaren]

ECU's can be repaired.

There have been quite a few cases where the electrolytics have dried out or burst and damaged the board but they can be replaced quite easily by someone careful and handy with a soldering iron.

 

Otherwise there are a few firms offering ECU refurbishment.

 

This being the first one that popped up - not endorsing them or anything.

[Socks]

ECU's can be repaired.

There have been quite a few cases where the electrolytics have dried out or burst and damaged the board but they can be replaced quite easily by someone careful and handy with a soldering iron.

 

Looks like I may have to go down that route unless I can source a new ECU for reasonable money - even then there'll be the charge for coding the new one, presumably.

 

I'll 'pop' the unit on Monday and take a look inside it, see if there are signs of repairable damage, or try a repair service as you suggest after talking over the sums with my mechanic.

 

Thanks.

[myglaren]

The unit isn't easy to get into as it is sealed against the fairly harsh environment under the bonnet.

 

With any luck Randombloke will have an input, being as he is an electronics tech. - unless I am confusing him with someone else, in which case apologies to both of them.

[Randombloke]

The unit isn't easy to get into as it is sealed against the fairly harsh environment under the bonnet.

 

With any luck Randombloke will have an input, being as he is an electronics tech. - unless I am confusing him with someone else, in which case apologies to both of them.

 

I would double check the throttle pot, and make sure that the end stop switch on it is working, if there is one. Also check the MAF sensor.

 

I would look here next:

 

BBA-Reman website

 

Also read this page:

 

BBA Reman ECU repair offer

 

Good luck.

[Socks]

question on recoding: would a new ECU, or an unlocked used one (if I could track down such a beast), work without getting it recoded? I just wouldn't be able to lock the car?

 

Thanks for the above, btw.