P38A Oh dear....all quiet!

This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
Mark Piercy

Mark Piercy

Well fumbled member....
Full Member
Posts
12,634
Location
Sud ouest France !
It's seems after owning my bus for over year without any real issues has started to turn.
Sudden loss of power and dragging it's heals has gone from rarely to permanent.
No black smoke and no power... Under fueled... Damn it.. that's put an end to it for the moment.
Any suggestions please are most welcome.
Only the fact I can't put diagnostics on it, for the love of money....:(
1999 2.5hdse auto. 196.000 miles.
 
Mark Piercy said:
It's seems after owning my bus for over year without any real issues has started to turn.
Sudden loss of power and dragging it's heals has gone from rarely to permanent.
No black smoke and no power... Under fueled... Damn it.. that's put an end to it for the moment.
Any suggestions please are most welcome.
Only the fact I can't put diagnostics on it, for the love of money....:(
1999 2.5hdse auto. 196.000 miles.
Click to expand...

Does turbo feed pipe to manifold plump up when engine is revved? If so. Check MAP sensor faulty or blocked or pipe to it split or blocked outlet in manifold.
 
Other than Wammers' suggestion, how about In tank pump working as per Wammer's How To in the Technical Section? Or the #4 injector? Or throttle position sensor. The list goes on really without a Nanocom!
 
wammers said:
Does turbo feed pipe to manifold plump up when engine is revved? If so. Check MAP sensor faulty or blocked or pipe to it split or blocked outlet in manifold.
Click to expand...

Grrrrrr said:
Other than Wammers' suggestion, how about In tank pump working as per Wammer's How To in the Technical Section? Or the #4 injector? Or throttle position sensor. The list goes on really without a Nanocom!
Click to expand...
Thank you, I'm writing a list as you help.
I'll get back with results...;)
I've a spare mar sensor from my old omega diesel, I'll also try a vacuum and resistance test on the map sensor and it's pipe.
Along with the air pipes to and from the manifold and intercooler.
Thanks again peeps:D
 
Last edited:
Mark Piercy said:
Thank you, I'm writing a list as you help.
I'll get back with results...;)
I've a spare mar sensor from my old omega diesel, I'll also try a vacuum and resistance test on the map sensor and it's pipe.
Along with the air pipes to and from the manifold and intercooler.
Thanks again peeps:D
Click to expand...

Sometimes the MAP pipe drops off as the ends perish, either at the fuel filter end or under the inlet manifold. That'd be nice and quick.

Any diesel leaking round #4 injector? Might be able to see under with a mirror?
 
I keep on top of the map pipe normally and always check around the injectors for any leaks, but will do so again. I've two weeks before the offroading weekend on the 19th.. couldn't go last year due to funds and this year we are even more determined to get there... Whether or not we get back is another thing.. 5.5hrs each way. Nice:cool: thanks again;)
 
Last edited:
Right then,
Air flow meter. Check.
Map pipe. Check.
Intake pipe and turbo output pipe. Check
Turbo pipe swell. Check.
Now the odd bit. Started and spooled up with no issues???
I've had a jiggling noise from the fip..
I unplugged the map sensor while running and the jiggling noise stopped, tried a couple of times and can confirm it stops the noise from the fip..
Wired thing is, I took it for a run with the map unplugged and it goes like a it should! With full power..
Now, either the ecu is a little slowing detecting the map disappearance or it doesn't talk to it? Although it should!
Ok, wizards and crystal balls to the front please.:D
 
I think the fuel pump wants resetting with the mileage it's got. Not to mention the chains would be a good call.
I'd swapped the map sensor last night for another off the omega once again and this morning while cold it started the jiggling noise on the pump.
I'll be needing a timing guage to check the lift I'm sure....;) thanks grrrrrrrrr:)
 
Mark Piercy said:
I think the fuel pump wants resetting with the mileage it's got. Not to mention the chains would be a good call.
I'd swapped the map sensor last night for another off the omega once again and this morning while cold it started the jiggling noise on the pump.
I'll be needing a timing guage to check the lift I'm sure....;) thanks grrrrrrrrr:)
Click to expand...

I got the timing tools off the Bay for about £30 or so. What I bought is in one of my threads somewhere. The hot and stalling one, I think. Pity you're not closer or you could have popped round.
 
Only thing that is supposed to jiggle, as you say in the pump, is the timing solenoid. That is controlled by ECU from signals received from number four injector. Has nothing to do with MAP sensor circuit. Unless the sound you hear is the stop solenoid going up and down like a brides nighty for some reason. But for the life of me can't think why it should.
 
Thank you, I'll give the stop solenoid a check to see if the wire could be loose.. It'll start on the button hot or cold, with no uneven idle or power issues! Only the intermittent boost loss?
I'll invest in the timing kit first and at least I can rule chain stretch... It may be while before I finish this thread with a "fixed" title..... :(
Any more thoughts are definitely appreciated:)
 
Mark Piercy said:
It did!!!:D
Click to expand...

Well that is a bit of an enigma. When you remove the pump mid section to do seals then tap it back and forth to get 750 rpm you are adjusting the idle fuel not the timing. Try disconnecting the timing solenoid then do the test again let me know the result. You really do need to get a Nanocom. If it's not the timing solenoid or the stop solenoid it has to be the quantity servo oscillating.
 
Thanks wammers, timing was the wrong word I used.. idle fuel, quite rightly said.
Ok, unplugged the timing solenoid and that made a right noise... Sounded like aluminium parts bashing together!!! :confused:Did this with map connected and disconnected.o_O
 
Mark Piercy said:
As for the nano suite...I may have to sell my rubbish Volvo. Not a loss really....
Click to expand...

You might need the Volvo yet!

Electronic stethoscope about £20 off the Bay. Might help track down exactly where the noise is coming from. I don't have MAF or EGR on mine so mine's a bit simpler. :)

How far away from @Datatek are you? he might have some diag / timing tools you could exchange for wine token or whatever the currency is over there!
 
You must log in or register to reply here.

Similar threads

C
Intermitent power loss
Replies
0
Views
929
CThody
C
Cobby44
FL2 SD4 Auto 13 Plate - Loss of Power/Rev Counter Inconsistency
Replies
14
Views
1K
Arctic2
Arctic2
R
Freelander 1 TD4 Crazy Amount of Blue Smoke After Idling
Replies
8
Views
2K
Arctic2
Arctic2
19_Hue_95
Lost all drive (and my own drive)
Replies
11
Views
1K
Brown
Brown
R
Loss of power
Replies
6
Views
961
dubbleRR
dubbleRR
Back
Top