compadre · Dec 5, 2020

Goog morning, all!
Have some trouble with my P38 diesel, year 2000, auto. Yesterday driving on a highway 120km/h constantly, after a hour the engine suddenly twitched a few times on acceleration.
Ok, and then after another half hour started to twitch more and more and without acceleration too. Well barely came home and at idle the engine has dropouts and cutt off.
Starting normally, still dropouts and cutt off. Connected nanocom and first three faults cleaned up,

started again and a new one came up:

Where do i start? Should i replace the CPS or injector #4 first?
I have a spare engine but they not qite the same. Mine is an EGR type, the other one for spare parts is from an '98 P38 non EGR tye. Im shure the CPS are the same but not shure about the injector.

Any advices, tips, hints please...?
Thanks

brianp38dse · Dec 5, 2020

If you swap out the cps DO NOT undo the bracket holding it just remove the cps.
as you have a spare nowt to loose there in swapping it.
i believe if the no4 injector fails it will run to a default setting which will not cut out like that.

RangeRoller dt · Dec 5, 2020

They should swap over fine. I’d put my
Money on CPS, new one is pennies

compadre · Dec 5, 2020

Hi, thanks for answering. Replaced injector #4 and no faults so far (after 20km test drive). I hope it was only the injector.

wammers · Dec 5, 2020

Only problem is number four injector is not a speed sensor and has nothing to do with fuel flow.

RangeRoller dt · Dec 5, 2020

Point of injection.
No4 injector fault will cause mil lamp on dash to flash you don’t need diagnostics for that one

tomcat59alan · Dec 5, 2020

compadre said:
Hi, thanks for answering. Replaced injector #4 and no faults so far (after 20km test drive). I hope it was only the injector.

I'm guessing you have disturbed the wiring to the cps when replacing the injector. May need a coat of looking at.

Grrrrrr · Dec 6, 2020

wammers said:
Only problem is number four injector is not a speed sensor and has nothing to do with fuel flow.

I think that was from the first set of faults.

CPS is dead quick and easy to swap over but wiring can be brittle so take care.

Worth checking EDC fuelling screen and modulation. That should give away if #4 is giving a signal or not. If on default I think it shows 50%.

Checking lift pump is working is quick and easy. Follow Wammers guide in the Technical Section.

tomcat59alan · Dec 6, 2020

Grrrrrr said:
I think that was from the first set of faults.

CPS is dead quick and easy to swap over but wiring can be brittle so take care.

Worth checking EDC fuelling screen and modulation. That should give away if #4 is giving a signal or not. If on default I think it shows 50%.

Checking lift pump is working is quick and easy. Follow Wammers guide in the Technical Section.

As @RangeRoller dt said the mil light would be on if there was no signal from number 4 injector

Grrrrrr · Dec 6, 2020

tomcat59alan said:
As @RangeRoller dt said the mil light would be on if there was no signal from number 4 injector

That's a good point. Didn't come up in the second lot of faults either.

wammers · Dec 6, 2020

You lot are learning slowly but surely.

Mark Piercy · Dec 6, 2020

wammers said:
You lot are learning slowly but surely.

Happy Christmas Mr scrooge.

wammers · Dec 6, 2020

Mark Piercy said:
Happy Christmas Mr scrooge.

How dare you I yesterday told the missus she could use my card to get herself a Christmas present up to the value £ 1-15-6.

Mark Piercy · Dec 6, 2020

wammers said:
How dare you I yesterday told the missus she could use my card to get herself a Christmas present up to the value £ 1-15-6.

I stand corrected you gentlemen you!!
Such opulence bestowed upon your better half.

tomcat59alan · Dec 6, 2020

wammers said:
How dare you I yesterday told the missus she could use my card to get herself a Christmas present up to the value £ 1-15-6.

But how much did she spend Tony?

wammers · Dec 6, 2020

tomcat59alan said:
But how much did she spend Tony?

£1-13-6 she saved the odd two bob for eight pack of Mars bars.

tomcat59alan · Dec 6, 2020

wammers said:
£1-13-6 she saved the odd two bob for eight pack of Mars bars.

Result.

RangeRoller dt · Dec 6, 2020

Grrrrrr · Dec 6, 2020

wammers said:
£1-13-6 she saved the odd two bob for eight pack of Mars bars.

That's a keeper.

compadre

Member

brianp38dse

Well-Known Member

RangeRoller dt

Well-Sprung Member

compadre

Member

wammers

No longer with us, RIP

RangeRoller dt

Well-Sprung Member

tomcat59alan

Well-Known Member

Grrrrrr

Technician, Bodgit & Scarper Ltd

tomcat59alan

Well-Known Member

Grrrrrr

Technician, Bodgit & Scarper Ltd

wammers

No longer with us, RIP

Mark Piercy

Well fumbled member....

wammers

No longer with us, RIP

Mark Piercy

Well fumbled member....

tomcat59alan

Well-Known Member

wammers

No longer with us, RIP

tomcat59alan

Well-Known Member

RangeRoller dt

Well-Sprung Member

Grrrrrr

Technician, Bodgit & Scarper Ltd

Similar threads