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Old 22-12-15, 10:06 PM   #1
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Default 207 ECU problems

Hello all

We have a 2008 Peugeot 207 that we owned from new which has recently developed a problem. The car runs on idle but there is no reponse from the accelerator pedal and the engine cooling fan is operating even when the engine is cold. There is also a message on the dash saying 'engine man system faulty'.

After reading a lot of threads, I noticed that a common fault with the 207's is water in the ECU plugs and after investigation I did find small traces of water in the middle ECU plug socket on the ECU. I have tried thoroughly drying and cleaning the affected ECU socket and plug but this did not made any difference.

I also tried sending the ECU to 'the ecu doctor' who told me that it did test as faulty and 280 later reasured me me it had been fixed. I recieved the ECU back this morning and it is exactly the same as when I sent it to them. No response from the accelerator, the cooling fan running and a message on the dash saying 'engine man system faulty'.

I am almost certain that the ECU is still faulty and have sent it somewhere else today to be independently tested as I need the car over Christmas and 'the ecu doctor' hs said that they would not be able to look at it again until Jan.

The ECU model is, VALEO J34P

Has anybody else had this kind of trouble with their 207?

I have also read many posts where owners have paid about 1300 to get their cars fixed. This is a 2008 car and am now worried that the car is scrap.

Thanks
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Old 23-12-15, 06:45 AM   #2
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If you get a working ecu with same numbers I can virginise it for a small fee then you can re program it to your car using planet
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Old 27-12-15, 09:12 PM   #3
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Hi all

Just before Christmas we recieved the ECU back from another ECU repair specialist who confirmed the ECU to be faulty and beyond repair. They did try to get it working and spend all day trying to get it working but no luck.

I renstalled the ECU in the car today so I could at least let the car run on idel for a few moment and the car ran ok for a few moments before exhibiting its problem symptoms again and eventually cutting-out. I restarted the car and left it running for about 30 mins and it has been running perfect???

I have no faith in this ECU and don't trust it.

I was wondering if the problem is due to water still trapped inside it in the foam/gel filling surrounding the ECU board . I have access to a vacuum chamber at work and was wondering about putting it in that for a while to pull any water out of it.

Anyone else come across this?

Thanks
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Old 28-12-15, 06:22 PM   #4
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Tried the car again today and the fault is back again. I have taken the back off of the ECU and put it on the radiator in the house for the night to see if it helps relieve any trapped water.

Is it worth trying to cut all the foam/gel away from the circuit board?

If I buy another ECU will I be able to program it myself if I buy one of the Peugeot Planet tools from ebay for about 60?

Thanks
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Old 28-12-15, 06:32 PM   #5
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Yes if it's in a Virgin state
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Old 04-01-16, 07:46 AM   #6
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Are you sure it's the ECU? Have you checked fuel pressure? How good is your battery? A bad battery can let you start the car but give strange symptoms. Have you checked the accceleration pedal and the throttlebody?
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