Hello

Sorry to make this my first post without properly introducing myself.

I have a Stilo 1.6 16v with a bad stalling problem!

I purchased it from an auctions so I'm not sure how long its had the problem.

9 times out of 10 you can start the engine and it will idle fine but as soon as you touch the throttle and remove your foot from the peddle the engine will drop below 1000rpm struggle for a few seconds then stall. (making it completely unusable!)

Ive replaced the air flow sensor (which I believe is called the MAP sensor?) and also cleaned the throttle body out completely cleaning both sides of the valve. I have also checked and cleaned all the main connections under the bonnet.

Any advise on this problem would be greatly appreciated?

Thanks in advance

Karl (from lincoln)

Any dashboard engine warnings?
Any stored fault codes?
What have you done so far? Checked plugs? What do plugs condition look like? Air filter?
Are you able to read Lambda outputs?
Quickest way is to read engine running data so you can see what's happening at tickover
Why did you change MAP sensor?

With an auction car then you'll need to assume nothing and check everything
Can you find out if it's just had a cambelt change for if that's done badly, as it so often is, then it'll never get better until that is sorted

hi . mine stalled untill i came on here. i cleaned the throttle body and it still stalled once or twice a day then i tried a fuel cleaner, (comma). seemed to worked for a while then i changed the last ignition coil out of the 4 and it seems to have sorted it. hope it helps

Deckchair5, The LCD says 'Engine Fault' once the engine is running. I pulled the fault codes but the only one that came up was one that pointed towards a power steering fault which the LCD display also shows up (even though the power steering seems to work fine) I cant remember what he fault code was but I will pull it again later.

I changed the MAP sensor because thats what instinct told me, im not a mechanic though!

I haven't checked the spark plugs yet although once I manage to get the car moving it runs fine, but as soon as you stop the engine stalls.

You mention cam belt, could there be a problem with the crank shaft sensor, or even the flywheel being put back on incorrectly?

Thanks again
Karl

I haven't checked the spark plugs yet
One of the first items to check then along with the air filter

You mention cam belt, could there be a problem with the crank shaft sensor,
Not if it starts ok but if the cambelt has been changed without synching the camshaft to the crankshaft then it will never idle well so try to find out if it has been changed recently. If you don't know car's history then it's best to renew cambelt and tensioners

or even the flywheel being put back on incorrectly?
flywheel isnt removed for cambelt change but crankshaft pulley is

I have now checked the spark plugs, which where all fine. Ive used electrical contact cleaner on the D4 connector and both the connections to the ECU and I'm still having the same stalling problem.

I've used Fiatecuscan to pull the following information.

Any help would be appreciated

the 2 'CAN' network issues could be because you have high latency between ur laptop and car... u need to change the latency values as stated on the FES site.

do you have any other 'chip' keys on your key ring (ie. another fiat key) this could be confusing the immo. ECU. (if this fault was 'active' the car would not start at all)

i wouldnt have thought the ABS issue would be giving you issues like you describe

sort your latency issues out and try clearing the codes, see what comes back.

from your description it wouldnt be the MAP (Manifold Absolute Pressure, monitors pressure/vacuum in the manifold) sensor you changed it would have been MAF (Mass Air Flow, monitors the volume of air entering the engine)you could have a leak inlet side between MAF and engine, which to me screams idling problems. Squirt the joins of the inlet side with WD40 or Electrical cleaner whilst its idling the revs WILL pick up when you spray it over the suspected leaking part... all things to check i could be miles off with this though

1.6 engine has MAP sensor and there is not MAF sensor!

i stand corrected... wont be the first time still learning stilos

87ka11 said:

Hello

Sorry to make this my first post without properly introducing myself.

I have a Stilo 1.6 16v with a bad stalling problem!

I purchased it from an auctions so I'm not sure how long its had the problem.

9 times out of 10 you can start the engine and it will idle fine but as soon as you touch the throttle and remove your foot from the peddle the engine will drop below 1000rpm struggle for a few seconds then stall. (making it completely unusable!)

Ive replaced the air flow sensor (which I believe is called the MAP sensor?) and also cleaned the throttle body out completely cleaning both sides of the valve. I have also checked and cleaned all the main connections under the bonnet.

Any advise on this problem would be greatly appreciated?

Thanks in advance

Karl (from lincoln)

Click to expand...

Hi

I have a Fiat Stilo 1.8 and have the exact same problem. Mine is really intermittant though. It either does it constantly or can go a few weeks without doing it all.

Not sure about you but i also get this problem at junctions and any time i depress the clutch for long periods of time.

I've had the car serviced and the oil pressure valve changed and a garage has checked this twice but sods law the problem never occurs when i take it in.

If you could keep me updated with any progress you make and like wise i will do the same with yourself.

Update... Still got the same problem

I have now replaced

Spark plugs
All 4 coil packs
Complete intake including idle control valve and map sensor
Both parts of the ECU (engine and fuse box)

I have noticed that when I disconnect the MAP sensor the engine will idle for longer before it stalls but it is still very lumpy and rough.

I have taken it to my local fiat specialist to be put on their diagnostic machine but the only fault code returned was one that points to an "Error on manifold pressure sensor"

Any ideas anyone? I've no idea what to try next!

Actual current fault code numbers would be useful

From post 2
Are you able to read Lambda outputs?
Quickest way is to read engine running data so you can see what's happening at tickover

So if you can connect to car then post up rpm and lambda readouts

I dont have the error code from the fiat specialist just what he said it meant.

I have the demo version of the Fiat Scan software so I will plug it in again and see what it says.

Did anyone find a solution to this thread?
Im new here:
I recently bought a stilo with problems.. First it wouldnt start (it starts but engine would come up with warning and shut off - i think it was low oil pressure).

I read the codes:
P1687 MOTOR. THROTT (STOP LEARN)
P0460 (Fuel level sensor)
P0105 (intake pressure)

First i cleaned the air intake valve, then all the electrical connections (D4, connections to ecu, and batteri poles, and even checked the ecu inside for bad solderings).

As soon as the codes were deleted the car started up with no problem.
The code P0460 still shows up though and dont disappear. I also did the learning procedure for the throttle (60sec on/60sec off).

BUT::
Some days after I was driving, everything was fine until the engine first stalled for a second just 100meters after starting from cold. And now a day later it went to a complete stop after driving a few kilometers and starting from a red light. I could easily start it again a few second later and drive off. It did though cut off again a couple of times very shortly without stopping the car.. the warning light came up with something, and the temperature meter jumped to the red zone for a second when it stopped. Dashboard working, lights are on, the car just stalled and no codes except from the P0460.

I would say that the car is shaking a bit when sitting still in traffic (idle). But no codes shows up. last it showed the airbag light which i just cleaned, and didnt see it again.

What could be the problem? new cam or crank sensors? wouldnt they show in the codes?

Thanks for this great Forum!