P38 DSE and Injector light

wammers · Jan 17, 2021

Grrrrrr said:
I believe part of the problem (in earlier cars at least) was a rather optmistic minimum engine speed for the hot engine. A weak battery, old starter and wiring and it a bit borderline. Add a retarded point of injection from chain stretch and it pushes it over the edge. I think they changed that mapping slightly on later models, possibly more than once (97 and 99?) from what Dopey's BMW mate said.

Running the lift pump and sticking the glow-plugs on all help it catch. Didn't they remove the NRV from the lift pump on later models?

I seem to recall Datatek saying even the 99 still suffered.

1999 did still suffer to some degree but only because of chain stretch retarding static.

Mark Piercy · Jan 17, 2021

wammers said:
1999 did still suffer to some degree but only because of chain stretch retarding static.

Morning Tony, I hope your good fettle matey

.
The pump on my own has been advanced in the past, 99my.

RangeRoller dt · Jan 17, 2021

My MY95 has to have the hotstart or starting when warm is near impossible even with the static bang on. I’m still running with a dead lift pump so that’s not helping but it doesn’t come on for cranking on MY95 anyway unless I do Wammers ecu mod.

RovyCouple · Jan 23, 2021

sorry G5r ,on the consumption I'm unable get less than 100kms/ 11.8, at steady 75kms, I feel I should be able get 100kms/10.2. Its quite a difference. The speed limit here is 80kms and frequently 70 and 50 kms in the small villages. My average journey time is 40 mins. I would like a little better consumption and I don't like glow plugs coming on unnecessarily when hot; as most find, a good strong battery is most of the issues cured. Thanks Wammers I'll continue search for hotfix chasing the wires.

RovyCouple · Jan 23, 2021

Furthermore, recently had a "alternator faulty" message, that can have all sorts of gremlin implications, so I ve bought a new one £90 delivered (if it ever arrives with Brexit).
It was a second hand one put on last year when I had no option. I'll keep all posted on customs charges etc., Bits from U.K may become very expensive for us poor expats. Might have to resort to Irish contraband !!

wammers · Jan 23, 2021

Mark Piercy said:
Elliott had one on his on 2000my.
The pump was at 86% modulation

86% modulation indicates static timing is retarded that would give poor hot starting.

Mark Piercy · Jan 23, 2021

wammers said:
86% modulation indicates static timing is retarded that would give poor hot starting.

It was Tony, long boat to china before it started. Now I've got it to 49%

it starts like a dream.

RangeRoller dt · Jan 23, 2021

Hotstart is for cranking the glows should go off once it’s started

P38 DSE and Injector light

wammers

No longer with us, RIP

Mark Piercy

Well fumbled member....

RangeRoller dt

Well-Sprung Member

RovyCouple

Active Member