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Discussion Starter #1
Having major electrical problems with our Peugeot 307. The problem is I turn the engine on and the display brings up several errors; ABS faulty, brakes, airbag, antipollution and gearbox. Speedometer and revs either freeze or go to zero. Aftet couple of mins driving, on slightly lower power, the car rights itself and it doesn't happen again unless you park up and switch it on again later. 3 garages later and we are no nearer to solving the problem. Peugeot themselves don't know. They are offering to replace ECU at great expense but can't guarantee this will fix problem. Now the antipollution light stays on all the time. Does anyone have any ideas as to whats wrong? I really don't want to pay large amounts of money if they can't be sure thats the problem. Thanks
 

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It would help those with more knowledge that myself if you gave a little extra detail like maybe the year and the size/type of engine in the car. Also any fault codes if you know them.

Several members have the same diagnostic software as the dealers and are prepared to visit and run a diagnostic check for a small charge to cover their costs, This is a whole lot less than the dealers charge. This will give the more knowledgeable somewhere to start. You can find someone close to you in this thread

http://www.peugeotforums.com/forums/maintenance-9/diagnostic-peugeot-planet-map-7734/

You need 20 posts before you can send a PM to a member, use the following link to get your post count up

http://www.peugeotforums.com/forums/general-discussion-2/need-20-posts-before-pm-13646/
 

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Discussion Starter #3 (Edited)
Hi, our Peugeot is a 1.6 auto '06 model.

Here is a copy of the email we sent to Peugeot re the problems:
12 February - Brake, ABS, Airbag fault warning came up also the stop sign and lost the rev counter and the speed dial (both doesn't move) car dies completely no battery or anything called out Green Flag. They jump started the car and Drove back no problems.
21st February – Brake, ABS, Airbag fault warning came up also the stop sign and lost the rev counter and the speed dial (both doesn’t move) called out Green Flag. Took car to garage 1 who fixed the alternator that day and had car back. Drove back no problems.
22nd February - Day off work, drove two minutes down the road then got Brake, ABS, Airbag fault warning came up also the stop sign as well as Antipollution fault and lost the rev counter and the speed dial (both doesn’t move). Called garage 1 he kindly picked it up took it back to his shop then on to garage 2 (peugeot).
27th February – Call from garage 1 to say you had checked the fault and had done a software upgrade and that I SHOULDN’T have any more issues with it. Picked the car up drove home no problem.
28th February – Set off this morning and about 10 mins into my journey I got – Brake, ABS, Airbag fault warning came up also the stop sign and lost the rev counter and the speed dial (both doesn't move).
However, all the faults disappeared, including the rev and speed dials, about 20 mins into journey. However 10 minutes further the same faults came back again and I ended up completing journey with no rev or speed dials.
Garage 1 picked my car up at lunch time to drop off with Peugeot and it drove a dream and likewise tonight from Peugeot to home not a single problem.
All three days where I have had the faults have started with the temperature at -1 or below just wondered if that could cause it but again that’s just me thinking of ideas because I need the car working fully.
More info:
01 March – Peugeot had the car on diagnostic for 9 hrs to search for issue none found, sent the parameters n report to Peugeot in France
25 March – Rung Peugeot was told that they would chase today, rung back to say that the tech in France said its an anomaly and they should consider changing alternator and BSI

There is also a clicking in the glove box area (BSI) like its trying to reboot or something similar.

We were told by garage 3 that it was high voltage regulation to the alternator, more specifically that it was over-charging at 18V. We did have the alternator replaced though so it sounds more like an ECU fault but none of the 3 garages actually know for sure. We've had a full 8 hrs diagnostic and it came up with the faults mentioned below but no reason as to why its happening. This came from the Peugeot garage in France also. Thanks


UPDATE:
Just to add to the above. My partner has driven the car to Harrogate today, a good 20 minute drive. Had the same problem as above for the first few minutes. As its quite cold here put the heater on full. Whenever he turned the heater off, the electrics would go off again. Turn the heater back on and it would go off. It did this the whole journey. The anti-pollution is still on continually but all the rest of the electrics only seemed to go off when the heater was turned off. At one point on Sunday we also lost our steering. I've been browsing through some of the other answers on here and I'm wondering if it might be worth replacing mini fuse 3 as this seems to be connected to some of the faults plus the power steering. Any ideas? Thanks
 

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Hi
You have a lot of electrical problems!
When we first got our 307 it also had electrical problems similar to yours.
After some time and investigation it turned out to be a bad earth. The main one from the battery to the gearbox.
It would be worth checking, it's easy and free if you have some jump leads just connect one lead from the battery negative to the engine or gearbox.

Hope this helps
 

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Discussion Starter #5
Update: Took car for a spin on Sunday. Started engine and all previous problems started however after literally two minutes it stopped. I dont know what to think with this car anymore. We have been told it could cost over £1000 to repair and really don't want to be faced with that. Any help at all?Thanks
 

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When I recently had my alternator repaired the replacement voltage regulator failed within days and resulted in erratic idling along with ABS/ESP/ASR/AIR BAG/ANTI POLLUTION faults and the alternator was charging at 18V.

I took the alternator off and had it tested by an alternator specialist who replaced the voltage regulator and been fine ever since.
 

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Discussion Starter #8
We were have braking, ABS, anti pollution and gearbox alarms as you mention before we changed the alternator. We took it to a garage who said the alternator was broken and needed replacing. On replacing the problem went away for the journey home but came back. We were told the voltage was at 18V which is too high. After 10 hours of diagnostic at a Peugeot garage they suggested it may be the ECU or the BSI that’s faulty but they couldn't guarantee it. Obviously we don’t want to be spending over £1000 for a repair that may not fix the problem. What I want to know, is the alternator connected to the voltage regulator? Is the voltage regulator something that could be causing this problem and is it easily replaced?

Once the warning lights go out everything works ok (the anti pollution does stay on though). The electric specialist said it is driving ok when this happens and won’t do any more damage to the car, is this true? Thanks
 

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The BSI controls the charging on these cars. The Voltage regulator is inside the alternator and if it is faulty then it will allow the alternator to put out too much of a charge and the BSI will not be able to correct it whilst there is a faulty component.

When I had my similar problem I tested if it was the alternator by disconnecting the 2 alternator connections (cover them in tape to prevent any contact with anything) and then I started the car. There were then no faults and the car ran fine.

Once I'd re-connected the alternator and started the car it ran like crap and all the faults came back.

If the alternator is charging at 18 volts I'd say it's either alternator or BSI and the easiest to check would be alternator but was the alternator charging at 18v before or after replacement?
 

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Discussion Starter #10
Yes it was overcharging but at 17v (i think) when it first happened and before the change.
First time it happened it completely shut the car down like the battery had died (no power what so ever to restart the engine with the key). Called out breakdown who jump started it and after a few checks said it read 17v on his reader but couldn't find anything else wrong with it.
All was fine for ten days when all the faults came back and had to call them back out, that was when i was told the alternator is overcharging and needs changing. Took it to a local garage who agreed and changed it. The drive back no problems but the following morning all faults back.

Its the worst kinda problem you could probably have on a car.
 

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I may have had a different problem to you but it is so similar that personally I would be getting the replacement alternator checked.

Also jump starting these cars can corrupt the BSI. There is a specific battery disconnection/reconnection procedure that should be followed whenever the battery is disconnected.

Also, a couple of long shots here but I read that if the cable to the small alternator terminal is damaged at all it can cause all sorts of funny things to happen and if your battery is not fully charged the cars don't behave as they should.
 

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Discussion Starter #12
I would agree however the faults were happening before the change so surely that would rule out the Alternator?
Could send the BSI down to BBA to test and fix/replace if needed, but even they have said that because the faults seem to clear then come back when they do a test they might not find anything. Its the fact that there is no guaranteed solution and at this moment and could be throwing money at it not to be solved.
3 garages and no solution, hence why i am on here.
Not sure what the next step should be now.

Thanks for all your help so far.
 

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No probs. The reason why I keep suggesting alternator is because mine did this and then I had it repaired including the voltage regulator and a week later same problems caused by the new voltage regulator failing.

Testing the alternator by disconnecting it isn't too difficult either.
 

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Discussion Starter #14
Is that something that is a complete novice (me) can do?
If so what am i looking for and and where? I know there the Alternator is but thats about it. :) Thanks
 

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If you're not used to working on cars then probably best not to try it yourself. Too many pitfalls I''d say but would be worth getting someone to try it for you.
 

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Discussion Starter #17
everything getting checked later today. Just found out the battery has been leaking because of the problem its now getting really dangerous. im having to change the battery but dunno how long that will last. Looks like i will be scraping it for peanuts. I will update this once ive had the car checked over.
Regarding the bad earth all the wiring was checked by a specialist he changed the earth but still the problems.

Question:

Is is more like to be the ECU or the BSI (or whatever they call it)?
I think my final cheaper step would be to send one or both off to BBA and get them to check them for me, surely £400 is better than £1200 even though no guarantee's that it will actually fix it.
 

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Discussion Starter #18
Update:

The new Alternator was disconnected and car was started (as Roky suggested) and no error messages or issues he has reconnected n the v has hit 21V wow.
The new Alternator is under warranty so will have a new one on Monday so fingers crossed.
Battery was really to blow they were surprised it already hadn't, been very lucky. Fingers crossed
 

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Discussion Starter #20 (Edited)
Happy Days

Looks like problem solved. Just had a call from garage they have fitted a new battery and changed the Alternator. All works fine and has been tested for 2hrs no issues.
I dont know the full details but he also mentioned that one of the cells was dry of battery acid which might have been the cause plus the battery was swollen to a size of a pie.

I am yet to pick the car up but guess the next few days will tell.

Thanks everyone and especially to Roky.

Added note:

He also mentioned something about the power steering cutting out for a few seconds, is that linked or a possible separate issue?
 
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