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Technical Stilo 1.9jtd acceleration dead for a few seconds

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Technical Stilo 1.9jtd acceleration dead for a few seconds

B0yCk

B0yCk

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Returning: 1500km in three days made with my car. No problem!

Less than today: the problem that i have i will explain it with an example:
>Example: go to 3rd, 60km / h and suddenly I no longer have acceleration for a few seconds. So all takes about a few seconds. If i continue to accelerate -> no acceleration, if i take the leg off the paddle and push it again it works.

same problem in 2nd and 4th gear too.

and is not doing this all the time ! today i drove ~100km , and made like that for about 6 times.

So?

bad fuel? and i changed the fuel filter about 1 week ago

i am tired of problems:((n)
 
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B0yCk said:
Returning: 1500km in three days made with my car. No problem!

Less than today: the problem that i have i will explain it with an example:
>Example: go to 3rd, 60km / h and suddenly I no longer have acceleration for a few seconds. So all takes about a few seconds. If i continue to accelerate -> no acceleration, if i take the leg off the paddle and push it again it works.

same problem in 2nd and 4th gear too.

So?

bad fuel? and i changed the fuel filter about 1 week ago

i am tired of problems:((n)
Click to expand...

Hi there

Disconnect your MAF sensor, go for a drive and see if the cars behavior changes, how many miles has the car done?
 
is not doing this all the time ! today i drove ~100km , and made like that for about 6 times.

140 000 km
 
Low speed boost pressure failure was the problem I encountered with my previous JTD`s MAF sensor, it left me dead at roundabouts, slip roads and was quite embarrassing, one minute i had full boost the next nothing... eventually after 5 or so seconds it then surged back in to life :eek:
 
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Ballackcanavaro99 - you replace it? clean it?
Shadeyman - can you be more exactly ? i have no error. srry if i don't understand .
 
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B0yCk said:
Shadeyman - can you be more exactly ? i have no error. srry if i don't understand .
Click to expand...

If you are loosing power I'm sure a code will be produced and stored in the ECU.

Error codes in the ECU can be read(and cleared) by FiatECUScan(http://www.fiatecuscan.net)

Check to see if you have any stored error codes, this will help diagnose your problem.
 
B0yCk said:
Ballackcanavaro99 - you replace it? clean it?
Shadeyman - can you be more exactly ? i have no error. srry if i don't understand .
Click to expand...

Shadeyman was asking if you have plugged in to your ECU to read the error messages stored.

Yes if the MAF proves faulty then you can remove it and clean the resistor sensor with contact cleaner. In my experience it did not work and I did have to replace the whole unit.

Just unplug it and go for a drive, if you are still unsure then leave it unplugged to see how the car behaves on a cold start and through out. If the behavior of the car improves then the MAF proves faulty.
 
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the free edition it helps me?
i can borrow the wires from someone and tell you tomorrow
 
before to clean something, i wanna see if are errors in the ECU, and now i'm waiting my friend with ecuscan.

maf, map - do not know yet, but changing them is expensive :( around 150 pounds the maf
 
Hitby said:
I'm having a similar issue with mine :(

Because it's so intermittent is it ok to leave the MAF sensor unplugged for a while or is it better not to?

Is it more likely to be the MAF than the MAP?
Click to expand...

Hi there

It is ok to leave it unplugged for a short period of time but I would not recommend just leaving it unplugged as a long term remedy as your air and fuel mixture will remain on default settings, besides your car with the sensor unplugged will not run on full turbo boost.

If you want to know if the MAF is the problem then simply unplug it and go for a drive, you will be able to tell if it is faulty within a few miles.

03012011194.jpg


It is located to the far right as you open your bonnet and it is situated down on the turbo to air box flexi pipes. You should be able to see the connector which is illustrated on the bottom picture, there are two clips which you push in and pull, once the connector is fully disconnected go for a drive and see how it goes. The MAF is the more expensive part to replace as the MAP sensor is a believe a third of the price or so.

And yes do take the readings of the ECU if you can, it will give you an accurate reading of the recorded on board diagnostics.
 

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The symptoms of this fault are as if the brake light switch above the brake peddle requires adjustment as per ->

https://www.fiatforum.com/stilo-guides/100058-brake-light-problems-changing-switch.html - courtesy of Deckchair.

It may or may not need a new switch but try adjustment first and if you have some skin tight gloves I would recommend you use them. Also be aware that there is only one way the switch will fit - it has three lugs!
 
Peat, as you say, i observed today those things:
>altought my foot is not on the brake paddle, the lights are still ON(not always but in 70% remains On).
>my car "eats" more fuel. instead of 6,3 l/km now it takes aroun 8l/km

and of course the problem of accelertion is still there

tomorrow i'm going to garage, no ecu test today, so i will clean the maf ( contact cleaner?? )

where is the brake light switch situated? a picture please? :(

Ballackcanavaro99 thanks for the pics man! i will post here tomorrow if it's the maf.
 
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B0yCk said:
Peat, as you say, i observed today those things:
>altought my foot is not on the brake paddle, the lights are still ON(not always but in 70% remains On).
>my car "eats" more fuel. instead of 6,3 l/km now it takes aroun 8l/km

and of course the problem of accelertion is still there

tomorrow i'm going to garage, no ecu test today, so i will clean the maf ( contact cleaner?? )

where is the brake light switch situated? a picture please? :(

Ballackcanavaro99 thanks for the pics man! i will post here tomorrow if it's the maf.
Click to expand...

No probs

You did not mention the jamming brake lights before, if the brake lights are jamming on then for sure you have a faulty brake light switch. The guide link describing all the issues involved and how to remove the switch has already been posted up by Peat.

I followed this guide to remove and replace mine a while back, really good guide and you can not go wrong. My brake lights were jamming and eventually fully jammed on constantly, the car kept cutting off power and as Shadeyman already mentioned, the switch was fooling the ECU in to thinking that the car was braking and cutting off the fuel in to the engine.

All the pics you need are on the guide published by Deckchair and full instructions too on how to replace it.
 
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