Hi
Got a puzzle for any experts out there. I drive a Doblo Cargo 1.9D. 68500m. 04 reg.

The problem is that the engine keeps cutting out when its up to temperature. It mostly does it when the engine is ideling or when I take my foot of the accelerator. The revs are not steady, its revs up a little on its own then cuts out. Its a company vehicle so they took it to a Fiat garage who checked the codes etc, they ruled out the fuel filter and the fuel line from the tank (no air in it). They suspected the fuel pump required replacing. My boss is a bit tight so he didn't like their quote and got some chap he knows to replace it for him. Needless to say its still doing it. Any ideas?

Thanks in advance.

as it happens when up to temp its propably the crankshaft sensor although
the diagnostic should have shown this

Hi Thanks for that.
Here is the report from the FIAT garage...

INVESTIGATED VEHICLE CUTTING OUT. RUN ENGINE TO
TEMP. CUTTING OUT WHEN HOT. CHECKED WITH EXAMINER
FIND ERRORS REF. HIGH PRESSURE PUMP • CHECK FUEL
FILTER FOR DEBRIS ALL OK. CHECK FUEL LINE FROM
TANK FOR AIR ALL OK. SUSPECT FUEL PUMP. REQ
REPLACEMENT.

Click to expand...

Is the crankshaft sensor and easy part to change?

prydien said:

Hi Thanks for that.
Here is the report from the FIAT garage...

Is the crankshaft sensor and easy part to change?

Click to expand...

haven't done this so don't no.
a few people have had similar faults and it turned out to be the cranksensor try doing a search for more info

What would happen if I disconnected the crank shaft sensor temporarily?

probably still get the problem as the sensor tell the ecu what position the crank is at

you'd go nowhere.

definately sounds like crank sensor...awkward to get to as at back of engine.Wont always show up in diagnostic but a resistance check when hot is a good enough test.

I'd go for this before even considering a pump,then FMT then start looking at pump side of things.

I agree with T most likely to be rpm sensor but there is a chance that their is a fuel line or pump problem either itself or wiring. I cant remember the errors but there are several that all indicate air in the fuel line.

The pump has been changed and there is no air in the fuel line (acording to the fiat garage) so it must be the rpm sensor. Cheers

Here's an update.
The rpm sensor was changed today....and its still cutting out! So the fuel pump and the rpm sensor have been changed. Anything else it could be? Lambda sensor maybe? But its a diesel, I'm not sure if they have lamda sensors.

Thanks for your input(s) so far

I'm not familiar with the installation in the Doblo, but if it's a "low tech" diesel with a mechanical fuel pump, they are stopped by a solenoid blocking the low pressure fuel before the pump, as the pump still runs direct from the engine even when there is no electrical power.

It's quite common for the solenoid to fail when hot on _old_ Transits and Peugeots.
Leave until cool - restart fine.

The "get you home" bodge on these things is to remove the plunger inside the solenoid, but you have to stall it to stop the engine (or wait until you run out of fuel).

Obviously if it's electronically controlled the above (probably) doesn't apply.

solenoid is intergral to pump from memory.

Having had a bit further dig, according to autodata the 1.9D has a "Lucas EPIC" injector pump.

T'Internet suggests this is a mechanical with electronic control "fly by wire" device, with a dislike of BIO diesel.. Aparently.

I'm still no wiser, and even older.

Hi, newbie here, Shmoo's the name pleased to meet you guys.

I have the same problem with one off my vans and was woundering what the final outcome was soI can have a go off fixing it my self.

I have changed the air filter and fuel filter today to see if that makes any diffreance but it did not.

When the van heats up it cuts out and wont start for about 10 mins then bursts in to life, when It wont start the engine management light comes on.

now I can do about 10 miles on a motor way before it cuts out or drive around town for hours before it cuts out.


As it heats up or after it cuts out it become more frequent and the distance I travel becomes shorter.

Any help would be great.

sounds like crank sensor......best take it to dealer for diagnosing.

How much do you think the dealers charge for diagnosic, Maybe it would be cheeper just to fit a sensor myself.

both are a gamble, if you read the threads on here its hard to make that call.

I'm trying to keep this van on the road with out paying a dealership £50 an hour, that sort off cash I dont have and after spending my time working for one I kwon there not always the best bet.