engine stalling

[frankie]

Have a 90 bhp 406hdi and few weeks ago she started lumpy idling and hunting and the odd time perhaps once a week would cut out on the road and luckily I would coast to hard shoulder ....takes her ages to start again but eventually does... problem has got worse where she cuts out every 5 mile or so now...I fitted a new pump in the tank and fuel filter but problem persists....undrivable now as only a matter of time until I cause a crash... fuel system is bosch...any ideas what to change next guys ,cas has 230000miles done.

[PeterN]

I know it sounds daft but first check the oil level, My C5 kept stopping for no apparent reason and I eventually found it was low engine oil, not very low but enough to trigger the management system if you braked hard or went down a steep hill.

Failing that the pressure regulator on the HP pump, these cause all sorts of problems.

Peter

[frankie]

Thanks Peter ...do u know if the 110 bhp pressure regulator is same as 90bhp....I live way out in the sticks far from a breaker but know where there is a 110bhp parked up. Ta Peter

[PeterN]

http://www.ebay.co.uk/itm/PEUGEOT-CITRO ... 2a5930833e

It says 2.0. or 2.2. so I would think its the same for all of the early ones.

Peter

[GingerMagic]

You may simply need to remove the little filter on the end of the regulator - they can clog up. I cleaned mine out ( it takes 5 mins ) and it did make a bit of a difference but I don't have the issue you have. I bought new seals for my regulator for £15, but they come in a pack so I did the wifes Picasso too!

If you undo the 2 10mm bolts that hold the fuel filter tank in place, simply 'flip' the thing over ( nothing will leak out ) and you can easily access the regulator - you may also need a long screwdriver with a torx on the end to get to the back torx bolt

If it doesn't want to come out, even after a wiggle and a tap, then leave it in there - if it breaks off you will be in the pooh..!


How old is your 90? There was a recall for the early models where a dodgy earth lead would result on failure of some sensors ( fuel pressure, throttle position etc )

Kelv.

[frankie]

She is 01 and in the family since new but never was recalled....I am going to swap the regulator tomorrow for one from a berlingo to see will it make any difference.

[PeterN]

If you remove the filter you will have to fit an extra 'O' ring to make it seal, alternatively you can grind the end off - making sure you get rid of all the swarf!

Peter

[frankie]

Pressure regulator it was.... I went to three scrapped 406 in locality until I found one with a bosch fuel pump. Thanks guys.

[frankie]

Now I think the pressure regulator was giving trouble this past few years because as soon as I turn the key now she fires up straight away when she used to turn over a few times before...I could not see a filter on the end of either of the regulators ...perhaps it was not fitted to them all. I also have a 90 bhp rapier estare with 260 thousand miles but it has siemens injection system, I take it the siemens pump had a different type of way of regulating the fuel as she is a deadly fast starter on any type of fuel!!

[PeterN]

They don't all have filters, one of the three I have doesn't, its that stainless steel looking tube on the end, the holes are so small I haven't been able to effectively clean on out - so I took it off, works fine.

Peter