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Technical 2012 Doblo Mylife 1.4 16v mystery engine fault

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Technical 2012 Doblo Mylife 1.4 16v mystery engine fault

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Brummy Exile

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The vehicle has a mere 8250 miles on the clock. We bought in late August from an independent dealer in the next village who specialises in offering low mileage unmodified Motability cars. Hence it only had 6300 on the clock after three years. At half the price of a new Doblo it was too good to miss.

Yesterday we fuelled the car with our usual BP Premium Unleaded (97 RON) and set off north up the M1 and M6. The car could not make the hill leading up to the M6 toll. No warning lights, revved fine in neutral, pulled away in first, ok in second but as soon as the engine is put under load – absolutely no power – gutless – zilch!

The Recovery guy reckoned fuel or air issues; probably MAF sensor. The car is now with the original local dealer. There are no codes in the memory according to their fault code reader. They have taken the car on two test drives and experienced the problem on both occasions.

The lack of codes is said to eliminate water or dirt in the fuel, EGR and MAF issues. They are now working on the basis of bad fuel. I am skeptical given that we only use premium grade fuel such as BP.

Any thoughts?
 
Brummy Exile said:
The vehicle has a mere 8250 miles on the clock. We bought in late August from an independent dealer in the next village who specialises in offering low mileage unmodified Motability cars. Hence it only had 6300 on the clock after three years. At half the price of a new Doblo it was too good to miss.

Yesterday we fuelled the car with our usual BP Premium Unleaded (97 RON) and set off north up the M1 and M6. The car could not make the hill leading up to the M6 toll. No warning lights, revved fine in neutral, pulled away in first, ok in second but as soon as the engine is put under load – absolutely no power – gutless – zilch!

The Recovery guy reckoned fuel or air issues; probably MAF sensor. The car is now with the original local dealer. There are no codes in the memory according to their fault code reader. They have taken the car on two test drives and experienced the problem on both occasions.

The lack of codes is said to eliminate water or dirt in the fuel, EGR and MAF issues. They are now working on the basis of bad fuel. I am skeptical given that we only use premium grade fuel such as BP.

Any thoughts?
Click to expand...

one thought ;
sorry to hear this.. unfortunatley we are at the mercy of the fuel station operators.., :(
they SHOULD syphon off a certain amount to minimise contamination - however that costs money..so some do it better than others..could be crucial in the current wet conditions:mad:

I've also seen where an Unleaded station underground tank was incorrectly filled with diesel - of course ALL the customers were unaware - were even billed for unleaded - until they all broke down 1/4 mile away:bang:

do let us know what they find.., condensation ( water) is normally sensed and flagged in a diesel though..

Charlie
 
You can also get unlucky and fill up too soon after the garage has had it's tank filled - particularly if they almost ran dry you can get all sorts of ****e stirred up from the tank, which then ends up in your motor.
 
UPDATE – The dealer had the car for 48 hours. The engine fault occurred on both of two test drives. Their code reader found no codes and their real-time analysis machine found nothing. They took the car to a friendly rival garage with more sophisticated kit; still no codes.

They took some petrol out to check – seemed ok. Further test drives went without a hitch and now we have the car back. The car has now done another 50ish miles and is running great.

I now have to convince my missus that she won’t be left stranded by the Doblo. I am reluctant to blame the BP fuel, but it seems the most likely culprit. I will run a couple of tanks’ worth of Shell Nitro 99RON through it. The quality petrol and the clever additives might clean any dirty sensors, valves etc. Fingers crossed!
 
Having got the car back and had no further issues driving locally, we decided to risk another motorway trip. Same result! We had to be recovered again. The Doblo went into limp mode(?) in lane 3 of the M6 – scary!

No warning lights on the dashboard – engine revs to the limit out of gear but won’t pull in gear above 1500rpm.

The independent dealer I bought the damn thing from has agreed to pay for diagnostics at a proper Fiat dealership.

If this does not result in a definitive cause and fix, it’s going to have to go. This will be a great pity as we love the vehicle, but reliability is paramount.
 
Brummy Exile said:
Having got the car back and had no further issues driving locally, we decided to risk another motorway trip. Same result! We had to be recovered again. The Doblo went into limp mode(?) in lane 3 of the M6 – scary!

No warning lights on the dashboard – engine revs to the limit out of gear but won’t pull in gear above 1500rpm.

The independent dealer I bought the damn thing from has agreed to pay for diagnostics at a proper Fiat dealership.

If this does not result in a definitive cause and fix, it’s going to have to go. This will be a great pity as we love the vehicle, but reliability is paramount.
Click to expand...

Hi,
it's a bit too new, - but worth checking out the possibilities of poor earth cables.. electronics are darned fussy:eek:

Charlie
 
At least the Independent appears to be a stand up Company (y)
 
I was finally able to take the Doblo into the local Fiat main dealer yesterday following a cancelled appointment last week.

They discovered the code “P0504 Braking System Feasibility” allegedly resulting from loose connections in the pedal housing. Presumably an indication that the braking system is compromised causes the engine management software to cause the engine to go into limp mode as a safety feature. At 70mph in lane 3 of the M6 – some safety feature!!

Time will tell if we have a real fix. My wife now totally distrusts the Doblo and wants to sell it.

The dealer we bought from has stood by the car and paid the bill.
 
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