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What-ho, chaps

Anyone know anything about the Lucas EPIC diesel system, as fitted in this case to a transit turbo diesel engine.

specifically,

1) what's most likely to cause a intermittent low power/slow response to the throttle pedal being floored.

2) this one hasn't got an intercooler. If I were to fit one, what needs changing? The book mentions that intercooled ones have a temperature sensor on the engine side of the intercooler, rather than the one on the airbox - is this just a case of fitting the former and plugging the wire from the latter to it, or is it another wire? And does the ECU need remapping?

Reply to
Austin Shackles
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Either the throttle butterfly is sticking shut, or the throttle pot on the pedal is knackered.

The turbo boost is set mechanically via the wastegate actuator- so a bleed valve and or similar to crank it up from facotry 6psi to nearer 10 or so with the i/c added will help enourmously.

The ATS is merely repositioned yes.

Tim.

Reply to
Tim..

A faulty throttle pot should cause the engine to go into limp home mode, and the EML to come on. I never even knew the turbo's had a butterfly! But then, I only ever sorted electrical faults on them, so never had to look too closely at the mechanics.

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Reply to
Moray Cuthill

indeed a faulty pot should doas your describe, but not always.

The tranny turbo has a weird and wonderful arrangement of vacuum operated butterflies which help the brake servo and the EGR to work.

Tim..

Reply to
Tim..

On or around Fri, 5 May 2006 09:26:58 +0100, "Tim.." enlightened us thusly:

I wondered about that. It seems to be behaving again now, so I'll leave it alone. The throttle also has a microswitch on it which detects full throttle position, AFAICS, and pressing that with the engine at idle did indeed put the EML light on.

Brake servo is on a pump driven off the back of the alternator.

The non-turbo one I have here has the butterfly thing you describe which does operate the EGR which is operates by a vacuum generated by the butterfly restricting the inlet. This I disconnected (thereby disabling the EGR) 'cos it spoils the running of the engine. That one runs much nicer without it.

I'm not sure the turbo one has such a gadget, but I might look for it. It certainly doesn't have a mechanically operated butterfly like the non-turbo one.

I'm not a fan of restricting the intake of diesel engines.

Reply to
Austin Shackles

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