DCi cutting out when throttle pressed

[Martin_172]

A strange one that has me stumped, so my wee van has a nice healthy fuel system, it will sit on full throttle, up hill on the motorway with no issues, no warning lights etc. Not a single bubble in the fuel lines.

Yesterday I done a 100 mile round trip with no issues, less than a minute from home I was sitting in first gear at a roundabout, lifted the clutch to pull away and it cut out, assumed I had stalled and re started it, same again! So I managed to get it going by not touching the throttle and just coming up thru the gears to get it off the roundabout.

Got it home and it's got me stumped. It will start and idle perfectly with no issues, press the throttle any more than a tickle to 1500rpm and it will cut out.

If I leave it sitting for an hour it will start and rev happily as normal for 30 seconds then cut out.


It cuts out literally as if someone has just turned the key off, no missfire, no stuttering etc

So far I've checked the obvious, all sensors and vacuum lines are connected, all wiring appears ok (nothing rubbed through anyway)

I found a broken glow plug wire which I've repaired.

Anyone got any experience going to try and borrow a snapon diagnostics kit tomorrow to plug it in

 

[william84]

Not sure if it's the same set up at 182 fly by wire pedal..
Just a suggestion.

 

[botfch]

Seems like a fueling problem, first thing I’d check is the fuel filter.

After that check the injectors and pump for pressure etc.

 

[bloke]

look for pirate treasure!!!!

 

[Martin_172]

look for pirate treasure!!!!

possibly a joke I'm missing there?

 

[Martin_172]

Not sure if it's the same set up at 182 fly by wire pedal..
Just a suggestion.

yeah same pedal setup, I replaced the pedal about 6 months ago as it was bringing up the electrical warning light and loosing power, a different fault with the pedal could cause this though I suppose!

 

[bloke]

possibly a joke I'm missing there?

split the filter or pull the pump and look for bits of gold in the fuel.

 

[Martin_172]

split the filter or pull the pump and look for bits of gold in the fuel.

got you lol! no issues drained the filter no issues, generally the pumps fail over a long time too on them with the tell tale sign its on its way out when its not holding pressure under load but this one runs spot on, or did until yesterday at 7pm lol

 

[Krarl]

Got a crack in the fuel line?
Is the air box and EGR clear?

Any symptoms after restarting it? Over fuelling etc

 

[botfch]

As above if the pumps fine check for diesal leaks anywhere and then leak test the injectors.

Pump on mine failed overnight with no prior warning so it does happen.

 

[Martin_172]

Plugged it in and was met with these...

Cleared the codes, re started and cycled the fault a few times

Will change the tdc sensor this afternoon and see if we have a cure! Odd as usually they don't like to start when it fails.

 

[Krarl]

Depends if its dirty of if its shagged tbh. I usually just try a quick wipe with a rag and wd and see if it's any better