Rough running

Junder · Dec 27, 2012

On the way down from Northern Ireland engine started running a bit rough under load. Fine when idling, but when accelerating through the gears, feels like its struggling to breath or maybe misfiring slightly. Had it hooked up hawkeye last week did show a injector fault, cleared it down and have not a repeat. Have used some injector cleaner that add to the diesel. One of the coolent pipes broke and I lost all the coolent, have bodged a repair on the pipe so not leaking now not sure if that would have any bearing. Checked the ecu and no oil in the plugs. Any ideas?

GreenHornet · Dec 27, 2012

And what are you driving?

Junder · Dec 27, 2012

GreenHornet said:
And what are you driving?

Td5 disco 2

jameswilco1 · Dec 27, 2012

Sounds abit simular to mine when the fuel pump went. although i couldnt realy get it past 50mph. can you hear it working?

Junder · Dec 27, 2012

Fuel pump seems to be working, I hear it whine on start up, car gets up to 70mph and runs at 70+

bencorkill · Dec 27, 2012

Air in fuel line? Clogged up filter ? needs a service(air filter) ? air leak ?

Junder · Dec 27, 2012

bencorkill said:
Air in fuel line? Clogged up filter ? needs a service(air filter) ? air leak ?

Air filter is only about 6 months old, have snorkel on car as well, don't know how air can get into system, not done any work on fuels system, fuel pressure regulator was changed about 6 months ago as well. Anything I should look for on the hawkeye

johnlad · Dec 27, 2012

what readings are you getting from the maf sensor at idle

Junder · Dec 27, 2012

Just had hawkeye connected, got a 3007 ambient pressure low fault. Maff sensor showing 1.88 - 1.92

johnlad · Dec 27, 2012

the maff is showing its voltage, there should be a reading around 55-65 kg/h at idle, have another look and use the scroll keys,
the ambient air sensor is in the air box you can take it out and clean carefully with electrical contact cleaner

Junder · Dec 27, 2012

In fairness I was off roading today so my guess is the 3007 code is to do with that ( I did get a bit wet)

Junder · Dec 27, 2012

Air flow is running at 56 / 55 kg / hour

johnlad · Dec 27, 2012

Junder said:
Air flow is running at 56 / 55 kg / hour

maf is spot on then

johnlad · Dec 27, 2012

could be boost modulator

Junder · Dec 27, 2012

johnlad said:
could be boost modulator

Boost modulator?

Junder · Dec 27, 2012

Had a quick look on interweb symptoms do sound about right, jerking when it's over 3000 revs tried the waste gate and while its stiff it does move and it's no stiffer from when I last tried it

johnlad · Dec 27, 2012

wastegate shouldnt be stiff when disonnected, try wd40 on it and move it with some grips to free it up

Junder · Dec 28, 2012

Hooked hawkeye up
Today and got these readings

3007 ambient pressure low fault

3039ambient pressure fault active

Turbo wastegate 0.00%

johnlad · Dec 28, 2012

have you cleaned the ambient pressure sensor in the airbox

Junder · Dec 28, 2012

Is that the sensor bolted on to the side of the airbox?

Rough running

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