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Discussion Starter #1
Symptoms:
Idle revs only, ie nothing but tick over when pumping the accelerator
Engine cutting out

Seems to run better once warmed up.

1st AA call out diagnosed the Air Flow Meter, unplugged and engine worked fine.
Air Flow Meter replaced under warranty and all was fine for a week or two.

2nd AA call out and after some homework EGR suspected. EGR cleaned by garage and told its working fine however the EGR will be replaced Monday under warranty because AA are a bit fussy.

Collect car and it wouldn't start, unplug Air Flow Meter and it starts 'just'. On drive home Engine Management Light comes on and I'm also told I have limited cruising distance (tank quarter full).

Anyway a friend of mine has the Fiat ECU Scan software, plugs it in and goes for a spin, EGR Control remains 'off' for most of the lumpy no power journey and when 'on' EGR valve opening percentage remains very low. Swap to friends 159, his EGR Control opens every time he touches the accelerator with EGR valve opening percentage in the 20s, 30s, 40s.

I will re post when the new EGR is fitted but in the mean time I hope this helps with those suffering the same symptoms

Rik
 

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Symptoms:
Idle revs only, ie nothing but tick over when pumping the accelerator
I'm no expert but in a diesel, this must surely be a lack of fuel or an engine management issue (inc. sensors)? Even with the EGR fully open, enough combustible air should be getting in to at least raise the revs.

I hope a replacement EGR fixes it but I'd be surprised.

Ian A.
 

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I'd agree with Ian. The 'limited cruising range' sort of suggests that a sensor is playing up. EGR valve issues will affect the amount of 'boost' you can get into the engine.
 

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Discussion Starter #4
The garage replaced the EGR and the issue with the lumpy revs/tick over disappeared only to have the engine management light come of with a clogged DPF error fault and limp mode. After several attempts by the garage to drive it into a Regen I suggest a Forced Regen as ive gone halves with a friend of mine on the FES. The garaged agreed and although it showed only 29% clogged on FES we ran a Forced Regen. Engine management light cleared and we had a perfect road test. What an I say, touch wood and fingers crossed.
 

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Discussion Starter #5
Btw, the 'limited crusing range' seemed to clear by itself and I've since heard this has happen to a few !
In case I confused anyone, I never linked the 2 faults together, it was more of a 'I get the car back from the garage and there's another fault'
 

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I thought the "limited cruising range" message was to say the fuel tank is under 1/5 full? I see that in our 159's when the tank dips below a fifth-ish...

Interesting read regarding the EGR :thumbs:
 

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Read on another post that your 29% clogged dpf is lost in a software translation and actually means 71% clogged. Italians eh ! :)
Am I right in saying that around the 75% clogged mark is dealer/'specialist' time (around the 50% to 55%ish mark is when an Italian tune up will still work?).
 

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Rik,
FES was well worth the cash wasnt it!! hope all is still ok with the car and let me know if you need a go of FES again..

Martin
 

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Three EGR's in four years.
Being a lease car, I couldn't arrange for major surgery (DPF Removal) and a remap to take the EGR out of the equation.

Similar symptons, loss of power and on one occasion it shut down completely and the AA had to tow it 33 miles to the nearest dealer.
 

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Discussion Starter #14
Dare I post - all working well since the MAF and EGR replacement followed by the forced Regen. AA warranty thank you very much :)
 
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