The last of the Endura engines had electronically controlled mechancial injection, hence the speed sensor on the crank and the needle lift feedback wires on one injector. Boost control was also electronic as far as I remember as this was all managed by the ECU for the pump - probably a lumpy thing with wires emanating from it on the back end of the pump. If you remove the EGR system the pump control is likely to go AWOL. My advice is stick with what is there or be prepared for a long tortuous path of trying to over-ride the pump that is trying to get things to work that are not there and consequently over compensating to get a reaction.
There was an interim stage with semi-electronic/semi-mechanical control which was a cheap fudge to meet Euro II and in some cases Euri III but was in essence a disaster waiting to happen. Sounds as if you might have this setup judging by the amount of mechancial paraphenalia hanging around.
If this is an electronically controlled pump, the vehicle should have OBDII diagnostics available from whence you can determine what if anything is in need of replacement. If yes then this will shut down if it sees that things are missing in the control path and only give at the best "Limp home mode". Readers are available from Halfords (~ £100 if you have a Halfords trade card).
I was dealing with Off-highway engines, mostly in India, when all this came along so do not have intermate knowledge of the machinations of the control system, just enough to know roughly what existed. Bosch VP series or Delphi (nee Lucas) Epic?
Hamish
----- Original message -----
Sent: 2010/06/12 22:15:53
Subject: Fw:[Quantum Owners] Endura DE - what are all the add-ons for?
There are a couple of bits attached to the engine which have me
puzzled.
The first appears to be some sort of diaphragm affair, on the top-left
of the inlet manifold.
I think it's probably responsible for opening/closing the exhaust gas
recirculation valve, which is below it.
This unit is leaking a little bit of oil. The unit doesn't appear to
come off i.e. if I need to replace it, I'll probably need to replace
the whole manifold, which will be a nuisance.
A single small-bore pipe runs from the upper casing of the diaphragm
to a plastic unit on the bulkhead, which in turn has a pipe which runs
to the brake serve vacuum pipe. I think this plastic unit is used to
switch vacuum to/from the diaphragm.
The plastic control unit seems to be electrically controlled (2 pins),
so what decides whether to open the valve or not? I thought this
engine had purely mechanical injection, but is there some processing
somewhere?
Or is it all done through simple electrical stuff like relays?
What would be the effect of simply removing the diaphragm, blanking
all the holes off and doing without EGR altogether?
Next up is an electromechanical device which was located under the
engine bay fuse box.
It looks like a plunger which presses against a hinged flap, which in
turn pulls a bowden cable which connects to a lever on the injection
pump somewhere near the throttle lever.
The plunger has a multi-plug connector with several wires to it.
Possibly some sort of anti-stall or cold start device, or for raising
the engine revs when reversing or changing gear? What is it? Do I
need it? If so, does it go to an ECU again?
There's a crank sensor mounted such that it would read lumps in the
back of the flywheel.
Very like the crank sensor from my Zetec/megajolt.
Would this be for the tacho input? If so, do I need to keep this
flywheel?
I hope not, I'm not sure if it's a dual mass one, or would be
compatible with the ERST gearbox/clutch.
I was hoping to use the ERST flywheel and an Escort/Fiesta clutch.
I've also spotted that one of the injectors has 2 thin black wires to/
from it.
Why would only one injector have/need wires?
I half-expected this to be the tacho feed, but it would run at 1/4
speed. So where would these wires go?
There's a multiplug connection to the air intake, 5 wires. I suspect
it might be something like a MAF sensor - the air intake has a square
plastic tube across it, which could easily contain a hot wire.
Again, why would a purely mechanical injection need a MAF sensor?
What reads the input, and what does it do with it? Another clue to
the existence of an ECU?
Finally, I haven't seen anything which looks like a method of
controlling the boost pressure.
Should there be one? I'm not looking to play with changing the boost
(not good on a diesel) but just curious.
Anyway, right now the electrical loom around this engine is looking
pretty daunting.
I'm hoping that a lot of the connections will prove unnecessary and
I'll be able to reduce the loom considerably.
Certainly, removing the various gearbox connections will help.
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IMPORTANT NOTE: All information presented herewith is provided on an "As Is" basis, without warranty or the implication thereof. Neither the Quantum Owners Club nor the individuals associated with the Quantum Owners Club or in the preparation of the above information shall have any liability to any person or entity with respect to liability, loss, or damage caused or alleged to be caused directly or indirectly by the instructions contained within this or related message(s).
- [Quantum Owners] Endura DE - what are all the add-ons for? TonyV
- Re: [Quantum Owners] Endura DE - what are all the add... Jim Hearne
- Re: [Quantum Owners] Endura DE - what are all the add... Russell Willcox
- Fw:[Quantum Owners] Endura DE - what are all the add-... Hamish Freeman
