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Old 19-03-18, 09:05 PM   #1
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Default 407 wonít start. Help

Can anyone please help?
My dad has a 2004 407. For a while he has had a a warning message about the particulated fluid being low! Last week the car broke down and wouldnít rev above 2,000 revs. I put this down perhaps to the reservoir not having enough fluid! So I jacked it up and put a litre of particulated fluid in the tank near the fuel tank. When we got it back down the car would start but only for a few seconds then cut out! I do have a small hand held ecu reader (diy one) and it didnít show any codes! We did manage to get the car to tick over for about 2 minutes but then it died again! Any ideas?
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Old 19-03-18, 09:39 PM   #2
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The lack of fluid and proper driving has possibly clogged the DPF and this is strangling the car.

You cannot just fill the fluid up you need to TELL the car it has been filled up a handheld cannot do this you need a real computer but that in itself wont fix it best course of action if the DPF is blocked is remove it and wash it out with powerwasher this will allow engine to breath again.

There are other possible reasons for the non running though but that is most likely based on the info you have given
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Old 19-03-18, 09:58 PM   #3
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The lack of fluid and proper driving has possibly clogged the DPF and this is strangling the car.

You cannot just fill the fluid up you need to TELL the car it has been filled up a handheld cannot do this you need a real computer but that in itself wont fix it best course of action if the DPF is blocked is remove it and wash it out with powerwasher this will allow engine to breath again.

There are other possible reasons for the non running though but that is most likely based on the info you have given
Thanks for the reply! I did wonder if that was the case with the computer vs my scanner! I will try and give that a crack with the jet wash! The warning still shows on the car about the low fluid so assumed it would of needed a proper rest! Is there anyway I can reset the ecu without a plug in scanner?
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Old 19-03-18, 10:20 PM   #4
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No you need a computer not a scanner
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Old 19-03-18, 10:38 PM   #5
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No you need a computer not a scanner
Are the filters easy to remove? I have tried a search on google but canít findvto much about getting them off? I have found a replacement on line for around £100. Is it located near the cat at the front of the exhaust?
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Old 20-03-18, 07:42 PM   #6
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How it works:
https://www.peugeotforums.com/forums/1306802-post2.html

You need PP2k to tell the car that the fluid has been refilled and that the filter has been cleaned; it cannot work it out for itself.
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Old 21-03-18, 07:07 PM   #7
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Thank you - I'm so glad I saw this... New owner of a 407 with the same warning showing... assumed I was ok with the fluid replaced... now I know better.
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