D2 missing under load

[Pedro_The_Swift]

severe when cold, runs ok at set speed but misses (slightly)when asked to "get along"

feels to me like a blocked fuel filter,,, but as there isnt an inline filter--- must be the one in the tank

anyone pulled a fuel pump assembly out of a D2?
according to RAVE there is a special tool required to remove a collar---

[Slunnie]

You can remove the coller without a special tool. It's just a locking ring that you can "tap" off.

[Pedro_The_Swift]

How much of a drama is it to get the carpet up?

[Slunnie]

Major.

To get the carpet up you'll need to remove the strip at the edge where the door goes,

Remove all of the lower level clips that hold the interior plastics in up to the rear door, loosen off the upper trim so that the lower trim can be pulled out, IIRC the hooks may have to come out also (I think) and then the carpet will lift. Leave a day for it while you learn and find all of the clips. There are also some that are in the bins, and you'll need to pull the vents out to get to the ones that are in there also.

When I fitted my long range tank, the R&R of the interior was the bit that took the longest.

[rangieman]

Missing under load could also be the spark plug leads;)

[Pedro_The_Swift]

have not had a chance to do anything yet,,
but this arvo, after warming it up enough to get the temp guage to move,, it flat out died,, NO cylinders firing,, small POP noises, (no its pitch black and bloody cold outside so I havent pulled the airfilter)took till guage was at normal before it operated OK,, still not great but most cylinders were firing.

[LandyAndy]

Dead fuel pump????,Crank angle sensor???
Goodluck Pedro
Andrew

[Pedro_The_Swift]

running with the airflow meter disconnected makes no difference---
when hot.

[incisor]

they still have that pesky ignition module at that age?

[duncanw]

running with the airflow meter disconnected makes no difference---
when hot.

mine dies if you pull the MAF plug off...

I had a similar problem with my V8 D1, when it was cold I had to hold it in gears longer otherwise it would miss, but when warm it ran fine. It turned out to be the fuel pump, then 200km later the fuel regulator died.

[LandyAndy]

TD5 with 3 extras:D:D:D:D:D:D:D,SORRY MATE.
Pedro,send a PM to Ken over here.He was having simalar woes with his D2 V8 a while back.He may have the answer.
Andrew

[Pedro_The_Swift]

MAF fuse is ok,,,

[rangieman]

So no fix yet ? Did you try the leads , Maybe not if it died ,Just might be the fuel pump:cool:

[smally4.6]

Pedro
My d1 V8 had a bad miss when cold, a slight miss when warmed up.. noticed it more driving up hill , ,turned out to be the fuel pump...
cheers brett

[mike 90 RR]

Pedro
My d1 V8 had a bad miss when cold, a slight miss when warmed up.. noticed it more driving up hill , ,turned out to be the fuel pump...
cheers brett

For the fuel pump
Usually you test it via a pressure gauge,which i don't have in my tool kit .... I usually disconnect the fuel line and get it to fill up a bottle, just to see if it is working

Just a theory, Has anyone heard of, or confirm this....
Test via how long it takes to fill up 1 litre bottle / Time it takes = pressure of pump

[Pedro_The_Swift]

So no fix yet ? Did you try the leads , Maybe not if it died ,Just might be the fuel pump:cool:

have been waiting to get it on the LR testbook--
they said
" LEADS!!!! dont drive it untill you change them,,,"
as they would,,,

so I drove it home to Maryborough (from Toowoomba)

replaced the leads,,
quite a few were corroded,,
some arcing marks as well,,

and it's made ------


not an ounce of difference when cold.
:(:mad::confused:

[Pedro_The_Swift]

just a quick question---
why would the fuel pump work better (but never perfectly)after 10 minutes?

I'm assuming the pump will stay the same temp as the fuel its sitting in---


whereas if the ecu is jammed at "one engine temp", this would explain the extreme roughness when cold,,

but maybe not the lack of go when hot??


?

[mike 90 RR]

just a quick question---
why would the fuel pump work better (but never perfectly)after 10 minutes?

I'm assuming the pump will stay the same temp as the fuel its sitting in---


whereas if the ecu is jammed at "one engine temp", this would explain the extreme roughness when cold,,

but maybe not the lack of go when hot???


The pump is on it's way out ...... or has rusty / bad connections

It gets better because the wires heat up & vibrations of car ... giving better connection ... basically bad earth or power feed

ECU temp jamb would be like starting a carby car with no choke .... But once warmed, it should run normal (perfect)

I take it Pedro, that you believe you have symptons of "Fuel Starvation?"

[smally4.6]

G/day Pedro
A cold engine demands more fuel?
When my disco had a miss, it was worst in the morning driving to work?
as engine reached normal temp, miss was more like a flat spot....
you do need a pressure gauge to check pump,drive while connected!
I dont know if you can do this on a d2?
i cant remember what pressure mine was operating at....Justinc tested mine...

Maybe someone else can help with pressure required at fuel rail?
cheers brett

[Pedro_The_Swift]

would rather check fuel pressure before pulling the pump out,,,,:angel:

[Pedro_The_Swift]

back firing out of airbox and exhaust when cold

[LandyAndy]

Pedro
Sounds like a timing issue too me.
Its all controled by the Crank angle sensor.
Worth getting it checked.Unsure what a newie is worth,if not too expensive just replace and keep the old as a spare.
Goodluck
Andrew

[PLR]

G`day Pedro

Think you were right in the first place .

I`d suggest the problem will be in the strainer and the problem will be lack of fuel .

From what you`ve told so far the symptoms say fuel to me .

A partial blocked strainer , that picking up and dropping bits of crud , would explain why it`s all over the place and it wouldn`t be heat related but time .

You could try cycling the key on and off half a dozen times before you start it , if you can listen for the pump to stop as it does each time you turn the ignition on , if not turn the ignition to on and hold for 3 or 4 secs each cycle .

If it starts and runs ok even if only for a few seconds by doing this , you have confined the area to ponder on .

A pressure and/or flow test will tell more if warranted .

Only a suggestion , it`ll only cost a bit of time .

Cheers
Peter

[Pedro_The_Swift]

Andy, I'm ASSUMING Testbook would have picked any the faulty sensors,,

Peter, good idea,, will listen today--

[Pedro_The_Swift]

ITS THE MAF!!!!
:banana::banana::banana::arms::arms::arms::miscloc k::misclock::misclock:

[Pedro_The_Swift]

:D:D

went to Andersons at Hervey Bay after sussing out they had a second hand MAF to try,,

was told it was a GOER,,
installed it and drove off.

30ft later I knew THAT maf hadnt made any difference--

I replaced MAF-A with another MAF,,

same result,,,

The Usual suspects at Andersons were now gathered around offering ideas,,
The 2IC offered the MAF out of his '03 Disco,,


Worked like a charm:cool:

it was SO nice to feel the V8 working again:blush::excl:



now to find a replacement.



oh,,

my best time for maf replacement was 75 seconds:whistling:
(thats looking after that little plastic radiater pipe--)

[Pedro_The_Swift]

replaced it this morning with another bosche(same part number)

instantly better.


its sooooo nice to have all 8 cylinders again:burnrubber:
:cool:;):D

[LandyAndy]

Good stuff Pedro.
Hope all is fixed.
I think my MAF is also stuffed.Just did 570km from a tank:eek::eek::eek::eek::eek::eek: You should be able to match that with V8 refinements.Not a happy camper.
Andrew

[simonl8353]

replaced it this morning with another bosche(same part number)

instantly better.


its sooooo nice to have all 8 cylinders again:burnrubber:
:cool:;):D

Glad to hear a happy ending, and not one that emptied your pockets either.

Well done