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Discussion Starter #1
Hello

A few months ago my 307 started to loose power or when you put your foot down nothing would happen also around the same time the diesel particle filter warning and anti pollution light came on and stayed on ever since

I took my car to local independent peugeot mechanic to see if they could sort it out they said I needed a new sensor for the diesel filter and this would sort it out as there was nothing wrong with the filter it was just a faulty sensor.

They did this wiped off all the faults but it was still there so they checked all the electronics in the car and went through all the diagnostic faults and they decided it was the BSI unit and would be about 400 to get it sorted out

Last weekend travelling home i struggled to get above 50 sometimes 40 on a motorway !!

I was wondering if anyone has any ideas if it a bsi unit or if it is do i need a brand new one as the garage said u cant fix it you need a a new one

Many thanks
 

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Bsi faults dont cause running issues your garage is doing the usual garage thing cant cure it by hitting buttons so there must be a fault in the bsi ecu whatever they are nearly always wrong !!

You need someone to look at it PROPERLY it could be as simple as a vacuum pipe loose causing the turbo to loose boost this if left will cause the DPF to clog up leading to even more lack of power but then your not telling us what engine you actually have there are different reasons depending on engine.
 

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Discussion Starter #4
Who do I get to look at it properly as they are specialist Peugeot garage and thought they would know best ?
 

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There are many peugeot specialists not all of them are very special sounds to me you need someone who has a smaller head crammed full of good information there are some out there they tend NOT to claim to be specialists :)
 

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Discussion Starter #6
So is it not electrical like the garage said but could be mechanical ?
Do I go to an mechanic that specialises in diagnostics for a second opinion or go to a normal garage and see what they say ?
 

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No the problem MAY be electrical but their notion that replacing the BSI will cure it is most definately wrong

Get someone to do a code read AND some live data readings also get the vacuum levels checked then post up the info you receive we would then be able to advise some more
 

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If you read through the forum using the search button you will find loads of info regarding these engine issues. Basically though you need the car to be read with the Peugeot system pp2K to get all the info off. Most of the dealers are just after your money so you need to find someone who can really look into the engine control module. Live data is what you need. How many threads have you posted? There is a list of people who are willing to help who have the pp2k system, myself being one. Unfortunately I am in Stoke on Trent. Again unfortunately the forum has a rule that you have to have posted at least 20 posts before you can see the list to find who lives near and then you can contact them through the PM system.
 

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As reliable says, the BSI is not the problem. It controls the bodywork electronics like lights, windows etc. It does control the immobiliser, but that would not allow the engine to run at all, not the issue here.

The running of the motor is controlled by the engine ECU which is a separate unit. When an 'expert' tells you your engine running problems are caused by a faulty BSI, I would suggest the only running you do is as far away from the 'expert' as possible.... ;)

You need live readings. Vacuum, diesel pressures, injector data, timing sensor readings etc. Get it done with Diagbox, not by some generic reader. See if you can find a local member who will be willing to do it for you. Or buy yourself a Lexia kit and do it ourself..:thumb:

Peugeots are renowned for dodgy wiring, bad connections and the 307 is definitely one of the worst for electrical issues. It would pay you to have a look around the engine bay and remove and check EVERY plug/connection you find for corrosion/bad connections. Also get in to the engine bay fuse box and have a good look around in there. Remove all fuses, lubricate all fuses/plugs/connectors with water repellent spray and replace. Check the connector plugs on the engine ECU as well. Check/remove/clean/grease/replace all battery positive and ground connections while you are in there. You may even find and cure your fault by doing this, certainly will not do any harm to give it all the once over.
 

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Discussion Starter #11
Went to another garage last week it was the dpf that was the problem it needs cleaning 2 glow plugs need changing and turbo has seized bad times indeed
 

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Clean the DPF if the DPF is flowing the turbo may well unseize itself as no doubt its the variable vanes they mean have siezed there are various ways to free it off glowplugs not working will stop a regen and this ultimately is why the DPF is clogged
 

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Discussion Starter #13
Im going to clean it this weekend I see there is a diy dpf clean on this forum hope that does the job
 

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DPF clean is easy on this, everything is easily accessible and simple to remove. Just go careful around the radiator.

1.6hdi - how often has it had the oil and filter changed? It's worth checking the EGR for carbon build up whilst you're at it.

The glow plugs are a pig. I'm not sure if you can test them in situ though. It's possible on some cars, just don't know about the 307.
 

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Discussion Starter #16
Oil and filters were changed last service august last year
Fingers crossed the dpf removal and clean goes well and that warning light goes off !
 

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Discussion Starter #18
garage were going to charge me 330 quid to clean it so thought i would follow the diy clean on this forum
 
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