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After a bit of advice please. I have got to do a engine swap in my 1998 's' reg 2.1 td 406. after my timing belt slipped and done some valves. I have tracked down another engine, but have been told by one person that i need to change the diesel pump over but on the other hand been told i dont need to by someone else

can anyone shed some light on this please, as i dont want to change the timing belt on this engine and pump to find out that i got to take it all apart again to put my old pump in again.

Also any one have any advice on the engine swap please. will be starting it xmas eve/boxing day

thank you in advance for any help

Hi there What is this "new" engine, does it have a different pump on it, say a Bosch?

good eveing, i do belive it is. does this mean this is good news

If it's the same pump as your original I can't see why it would need changing, unless there's any doubt re its serviceability

It's a very very long time since I had an engine out of a car and they got a lot more complicated since. I'm sure others will be able to give you a better idea

[quote="steve_earwig"]If it's the same pump as your original I can't see why it would need changing, unless there's any doubt re its serviceability

someone said its to do with the immobiliser. Think i will just give it ago. if not swap it over
thank you for your help steve_earwig, and have a good xmas.

ps i can see me and this site becoming close friends over the next few weeks. as there are a few other lil things i have problems with on my 406.

I'm pretty sure that's not the case, the immobilizer cuts off the supply to the ecu but doesn't go near the pump. Still, maybe someone else will have a better idea (Sunday evening and there's no-one about? )

The immobiliser on the Lucas EPIC system, when engaged, prevents the stop solenoid from opening, therefore the engine will not fire, although it will turn over. The stop solenoid is built into the EPIC pump and difficult to access.

Some 406s are fitted with a number pad for the immobiliser by the driver's knee, does yours have this? If yes, I advise removing the pad before doing anything else. If you don't have this keypad, then I believe the immobiliser is disabled only by the correct RFID tag being present in the key (Philips ID33) and that tag being coded to the injection ECM, which can be done via PP2000 (not that I've actually done this on my D8).

The problem you may encounter is therefore not to do with the pump, but with the ECM letting the stop solenoid disengage. Therefore I suggest you use the pump that comes with the replacement engine, but use your original ECU. You could try coding the new one, but I don't really see the point since it takes seconds to unplug.

get hold of the wiring diagram and fined the switched 12v then put that to the start stop solenoid, done no immobilisers

I suspect that's the 1.9 but have a wiring diagram just in case... http://peugeot.mainspot.net/wiring406/p8c.shtml

Lovly thank you for every ones help.
I shall have a look for the key pad when I get home. From work.
I shall keep everyone informed on how it goes
Have a good xmas everyone

well hope you all had a good xmas.

been in the garage since xmas eve and have finally got the new engine in. going to call it a night for today (boxing day night) just got to bolt all the pumps bolt on, and plug all the wires in and she should be running

That sounds like you completely avoided Christmas and did something more interesting instead, well done

haha kinda yeah, but im wishing i had left the car and had chirtsmas instead. had nothing but problems so much so i know want to scarp the car