Iveco injecto waring light

[seabreezesports]

This is a bit of a tease . No I tell a lie it is bloody frustrating. as I have only just got a new high pressure pump due to the limp mode on overrun . (Done 2k since then without trouble)
I have a 2003 2.8l which is now going into limp mode . Drop the revs below 1200 and off we go . Or it stops completely . Turn the key and it normally starts straight up though to be awkward some times it take a couple of on offs to charge the fuel system.
There is no problem on overrun
On light load and half throttle ( Motorway work no issue)
Half to 3/4 throttle normally no issue .
If I go full throttle then after a few seconds ( Normally ) the engine drops into limp mode .
First this isn't the low pressure pump as we have twin tanks with 2 independent pumps filters etc and the fault happens on both tanks

As far as I can see this isn't revs related .
Applying the throttle gingerly or hard makes no noticeable different to the fault .
Any suggestions?

 

[john kyte]

You might find the answer to your question on the Iveco forum

 

[wizza]

Have you done a leak off test on injectors, sounds like injector problem.

 

[seabreezesports]

Tried reading all on the iveco forum . Nothing fits but thanks for the thought .
Will look up how to do a leak off test Not sure it is one injector as when it is running the engine is smooth Thanks

 

[JJ]

I sometimes have trouble with limpness and leak offs too...

JJ

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[seabreezesports]

It's been a little while but £500 later the camper is running Wizza was spot on . 1 injector down . the code that came up was 1632 though this seems to be a catch all for an error on the HP rail.
Hope this helps some one else

 

[seabreezesports]

500 miles late and back in garage . With in 10 miles it would go into safe mode when pulling at low revs 1200 to 1500 . Easy to drive round but annoying. Then back to square one . Full throttle brought on safe mode. £570 later and a new high pressure pump and all seams well. This the 3rd pump in 15k and yes the tanks have all been cleaned new filter fitted . So far I am £1500 down for 17k driving Bloody expensive these Iveco's

 

[DP+JAY]

I had a similar problem which turned out to be a faulty injector harness

 

[dave newell]

As it only happens on full throttle I'd go for the throttle pedal position sensor, known to give faults occasionally and easily swapped to prove or disprove plus lots cheaper than a new HP pump.

D.

 

[seabreezesports]

Just done 1k over the week and all is well . Starts better than ever . The high pressure pump has a metering and a low pressure sensor. Not convinced that one of these was not playing up . Will strip the pump this week and inspect.

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[jezport]

Dis you not get warranty on the pump?