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Discussion Starter #1
Hi all, again. Still no joy starting this 807 of mine removed all fuses checked them twice, all good, all connections good on the fuse boxes? Turns over, won't start? Pp2000 says can't communicate with engine ecu? So I removed the pollen filter ( didn't know I could do that?) and found this picture 1. Abig thick wire with a burst out bolt on it from a big relay ( picture 2)? So got another relay fitted it and still no joy? But this relay has power supplied to it no matter which fuse you remove? Power only gets removed when you disconnect the battery? Has this burnt out the Loom???
 

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if you have a post on here regarding this fault i recommend replying on there because then people dont ask you the same questions again and again

after trying to start turn off leaving key in ignition and open the driver’s door, does the car beep to say the key is in the ignition?

what happened when it stopped working?

what have you tried so far?
 

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Discussion Starter #3
if you have a post on here regarding this fault i recommend replying on there because then people dont ask you the same questions again and again

after trying to start turn off leaving key in ignition and open the driver’s door, does the car beep to say the key is in the ignition?

what happened when it stopped working?

what have you tried so far?
OK, ive added this all onto the original quote.
 

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I would ask Reliable 406 for help, send a PM. Wiring diagram has a permanent + live to the glow plug relay so no concerns about that. At the relay there are the connections to the glow plugs, earth and two wires from the engine ecu that must trigger the glow plugs, engine ecu could have been damaged by the short in the relay or even the other way round.
Have you tried starting with the relay disconnected, glow plugs not needed only there for ultra cold starts and FAP regeneration.
Remake the small earths on the front chassis legs.
 

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Discussion Starter #5
if you have a post on here regarding this fault i recommend replying on there because then people dont ask you the same questions again and again

after trying to start turn off leaving key in ignition and open the driver’s door, does the car beep to say the key is in the ignition?

what happened when it stopped working?

what have you tried so far?
code is 1320 +ve supply to engine control relay missing, bsi cant communicate with engine ecu?
car just cut out while driving, right in the middle of the road, rush hour. ( well of course it would ).
fitted new relay still no start, so disconected it from glow plugs at engine for now.
No engine management light on dash now? and no glow plug light on dash now? even though when I test the lights through pp2000 everything lights up ok?
 

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Discussion Starter #7
Try answering the questions I asked about the keys
Yes it does beep.
The code was 1320 no +ve power to engine ecu, ( or similar )?
when it cut out it just stopped like a stall?
it showed esp/asr fault on dash, wouldnt reset, wouldnt restart, wouldnt show up on pp2000 ( engine management ecu ) no reponse greyed out.
bsi faults - no communication with engine ecu? and no communication with air conditioning ecu? engine management light wont light up with ign on now neither will the glow plug light.
ive checked three fuse boxes all connectors, found nothing wrong, found a burnt out glow plug relay and changed it.
thanks for any insight.
I dont know where the engine control relay is? or the bsi?or the engine management ecu?
 

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This fault could well write off the car. I'm wondering about the ABS/ESP lamp, the ABS unit is forward of the engine ecu & glow plug relay, given that she cut out suddenly it seems more like a broken wire, what about wiggling all the wires in the area especially where the loom spans across to the engine over the gearbox while some one is trying the starter to see if there is any change? Might be worth undoing the tape so you can inspect the wires individually.
 

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Check the under bonnet fuse box for damage, the engine ECU is powered up by a relay in the unit and it also supplies Glow Plug relay and some feeds to ABS Pump.

If this was damaged by the glow plug relay burning out it could affect other systems. Also did you check maxi fuses on front face of fuse box (they are easy to miss)
 

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Discussion Starter #10 (Edited)
This fault could well write off the car. I'm wondering about the ABS/ESP lamp, the ABS unit is forward of the engine ecu & glow plug relay, given that she cut out suddenly it seems more like a broken wire, what about wiggling all the wires in the area especially where the loom spans across to the engine over the gearbox while some one is trying the starter to see if there is any change? Might be worth undoing the tape so you can inspect the wires individually.
I greatly apprieciate all the help and info, Ive had the under bonnet fuse box out and tested it all finding no faults.
The engine ECU I'm not sure about? if its the big box on the n/side front inner wing with three big connectors going into the top of it? it looks in good condition and all connections are good?
The burnt out relay was on the n/side wing just left and behind the afore mentioned box.
I have removed and tested the battery fuse box which was all good too? I tested all the fuses and connections on the fuse box above the throttle pedal its all good, found some relays/modules in there too but they all look good as well?
I'm going to try again as you suggest, and like you I am sure its a broken wire somewhere, I just cant find it? just about at my wits end now having removed most of my cars interior and engine bay equipment to test wires and it all looks good????
 

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Discussion Starter #11
Did you mean the engine ECU relay is inside the fuse box itself? or is it the relay inside the fuse box compartment?
I can see the relay in the fuse box compartment in the under bonnet fuse box, I've tested it and it functions ok but I didnt know that it may be the one that supplies the engine ECU? I will test again by powering up the Ignition.
But if itsone inside the fuse box itself im stuffed?
 

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Power for the engine ecu comes from the underbonnet fusebox and there is no replaceable relay the underbonnet fusebox is connected to the BSI/FUSEBOX inside the car

806 engine ecu is on drivers side inner wing under bonnet
807 the engine ecu is at passenger side inner wing under bonnet

wiring could well be the culprit its a pain to find these kind of faults.
 

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Discussion Starter #13
Thanks reliable 406, Ive had to take some time away from the car as I was about to put a match to it???? anyhoo, Ive stripped back the wiring loom across the engine finding nothing wrong/obvious faulty. I would like to know if there is a check list/test route to eliminate what I am checking?
I have also found a few relay/black box things above the throttle pedal too?
If the BSI is the incar fuse box above the throttle pedal how do I check it? how do I check its sending power to the engine ECU? This seems to be the main thing as PP2000 after doing a Global Test shows the engine ECU as " Greyed Out " no comunication with the BSI? Its getting very complicated?
Thanks for everything, rant over. guiness opened.
 

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If ecu is greyed out it cannot be getting power from anywhere the Bsi wakes it up when it sees the key but the ecu should still be powered up as soon as key is turned it needs more than 1 positive feed to work properly so even if the BSI signal was not getting there it should not be grey it should still be readable.

power also needs a return path so earth wires could also be the culprit.

Run an earth lead from ecu case to engine i have seen a couple where it was not earthing leading to no start.
 

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Peugeot 807 executive diesel fuel problem

Help !!!!!
I have a Peugeot 807 executive 2.0 td
I broke down as fuel line detached to filter housing, had green flag out. First mechanic couldn't get it started said air lock was too big. Second mechanic came out, got it started but pissed diesel out everywhere over back of engine ! Got car taken to local garage they removed pipe from filter housing as nipple had been broken on 3 way plastic connector. They replaced pipe and connector as comes as one unit ! Got it started but diesel now being forced back through overflow pipe ! They said never seen this before and don't understand why ! Have been without car for a week now !!!! Please help ! Thanks ! Dave
 

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Please help someone please!
I have a 2004 807 executive ! Was driving along went through big puddle in storm, car cut out wouldn't restart ! Looked under bonnet rubber pipe had come off fuel filter housing at a 3 way plastic nipple ther rubber pipe ran back into top of engine area ! Refitted rubber pipe back onto nipple ! Non start ! Called green flag 1st bloke gave up and left ! Second bloke came put &10 diesel in and ran but pissed diesel out at back of engine ! Local garage now had it 3 weeks and say it's forcing diesel back to overflow and won't start and they don't know what to do ! Please help me ! Thanks ! Dave
 

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hi there you need to check continuity find both ends of the wires run another cable from one end to the other but run it through a multi-meter to check continuity wires can break inside or break down (corrosion) and cause a high resistance.hope this helps
 

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Please help someone please!
I have a 2004 807 executive ! Was driving along went through big puddle in storm, car cut out wouldn't restart ! Looked under bonnet rubber pipe had come off fuel filter housing at a 3 way plastic nipple ther rubber pipe ran back into top of engine area ! Refitted rubber pipe back onto nipple ! Non start ! Called green flag 1st bloke gave up and left ! Second bloke came put &10 diesel in and ran but pissed diesel out at back of engine ! Local garage now had it 3 weeks and say it's forcing diesel back to overflow and won't start and they don't know what to do ! Please help me ! Thanks ! Dave
could be injector u/s or relief valve faulty causing pressure to flow fuel via return pipes
 

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help

I greatly apprieciate all the help and info, Ive had the under bonnet fuse box out and tested it all finding no faults.
The engine ECU I'm not sure about? if its the big box on the n/side front inner wing with three big connectors going into the top of it? it looks in good condition and all connections are good?
The burnt out relay was on the n/side wing just left and behind the afore mentioned box.
I have removed and tested the battery fuse box which was all good too? I tested all the fuses and connections on the fuse box above the throttle pedal its all good, found some relays/modules in there too but they all look good as well?
I'm going to try again as you suggest, and like you I am sure its a broken wire somewhere, I just cant find it? just about at my wits end now having removed most of my cars interior and engine bay equipment to test wires and it all looks good????
I know this is an old thread but did you ever find out the problem?
my car cut out 807 2.2hdi manual doing 70mph on the a12. had to pull over on the hard shoulder. eco mode appeared. car would turn over but not fire up. windows stopped working so its left out on the road with the window half down on passenger side. ive tried disconecting the battery but still shows eco mode. im now charging the battery to see if it is down on power so im hoping eco mode turns off when i put it back in. i have checked fuses near the battery they all good. i cannot do a reset as i cannot control the windows. central locking works and car beeps if i leave the key in when door open.
 

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I greatly apprieciate all the help and info, Ive had the under bonnet fuse box out and tested it all finding no faults.
The engine ECU I'm not sure about? if its the big box on the n/side front inner wing with three big connectors going into the top of it? it looks in good condition and all connections are good?
The burnt out relay was on the n/side wing just left and behind the afore mentioned box.
I have removed and tested the battery fuse box which was all good too? I tested all the fuses and connections on the fuse box above the throttle pedal its all good, found some relays/modules in there too but they all look good as well?
I'm going to try again as you suggest, and like you I am sure its a broken wire somewhere, I just cant find it? just about at my wits end now having removed most of my cars interior and engine bay equipment to test wires and it all looks good????
I know this is an old thread but did you ever find out the problem?
my car cut out 807 2.2hdi manual doing 70mph on the a12. had to pull over on the hard shoulder. eco mode appeared. car would turn over but not fire up. windows stopped working so its left out on the road with the window half down on passenger side. ive tried disconecting the battery but still shows eco mode. im now charging the battery to see if it is down on power so im hoping eco mode turns off when i put it back in. i have checked fuses near the battery they all good. i cannot do a reset as i cannot control the windows. central locking works and car beeps if i leave the key in when door open.
 
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