Berlingo 2001 1.9D Bosch mech fuel pump microswitch

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Thom
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Berlingo 2001 1.9D Bosch mech fuel pump microswitch

Unread post by Thom »

1868cc DW8 WJZ engine
Having done the cylinder head and new timing kit, I notice on the last leg of reassembly, there's a bit missing off the microswitch !
It's the Bosch mechanically timed pump, and the lever that works the microswitch off the cam, on the top of the pump...is gone !
Does it matter ?
It stops theft doesn't it ? Does it do more than that ?
If I buy a new one, can I just "plug and play?"
The Haynes manual goes a bit mystical about this, suggesting shear bolts have to be cut off (I can see two screws holding it on and a lead down to a dual mounting for 2 connectors on the front. The second connector runs in behind the pump, is thet the actual "stop valve ?")
Haynes further says it needs maindealer's computer to set it up ?
Any info greatly appreciated !

Tom
wheeler
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Re: Berlingo 2001 1.9D Bosch mech fuel pump microswitch

Unread post by wheeler »

Post a pic of the component you are talking about.
The stop electrovalve is under a security shield with shear bolts but the micro switch should just be screwed on.
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Hell Razor5543
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Re: Berlingo 2001 1.9D Bosch mech fuel pump microswitch

Unread post by Hell Razor5543 »

It might be possible to replace the lever (if it is part of the microswitch). I have seen such microswitches where the lever just fits over a couple of pivot points on the switch itself. This ebay link shows these sort of switches (with various levers).

https://www.ebay.co.uk/itm/264404476312 ... R7Sa16HaYg
James
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ex Xantia 2.0HDi SX
ex Xantia 2.0HDi LX
ex C5 2.0HDi VTR
ex C5 2.0HDi VTR
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Thom
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Joined: 07 Sep 2023, 22:40
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Re: Berlingo 2001 1.9D Bosch mech fuel pump microswitch

Unread post by Thom »

I found a Bosch pump with nearly 200,000 miles on it, with the switch on top for 99 euros, in Holland !
I have a pic of it......
My switch has lost the mount and roller arm.
That's the rear view, you can see the switch and black cam follower on the top.
2838e6cf-cab7-4536-8cbb-13e7de2719d8.jpg
Last edited by myglaren on 27 Sep 2023, 19:48, edited 1 time in total.
Reason: Image corrected
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CitroJim
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Re: Berlingo 2001 1.9D Bosch mech fuel pump microswitch

Unread post by CitroJim »

You'll likely not notice any difference with the microswitch not working... As far as I recall, all it does is detect when the engine is well off idle and turns off cold advance and glolwplug post-heating when the engine coolant is still below 60 degrees C.

This is done on the basis that despite a cold engine, it's driving along under load so the post heating and cold advance is no longer needed.

Unless you live in penguin-land and it regularly falls cold enough to make brass monkeys shiver, I'd not be over worried about it...
Jim

A bit of a Citroen AX fan...