Still haven't got to the problem of my 1.6 Stilo cutting out randomly. Infact, it doesn't even seem to cut out completley anymore, I lose power and all the dials go dead, then i take my foot off the accelerator and reapply it and it fires up again. Then the temp gauge shoots off the scale into the red zone!

It just happened three times one after another on the motorway, and i was JUST on my way back from FIAT who can't find any faults whatsoever. So far i've had the throttle body and intake manifold cleaned, my lambda sensor changed and my throttle body parameters reset to factory settings but still nothing has changed.

I really need this sorting before it decides to cut in a dangerous position!

please! does anyone have any more information!? I'm near the end with this thing! :bang:

Hi Zer,
I have issues with my 1.6 cutting out too, but I do not have the same problem with dials etc going mental! I've also tried cleaning the throttle body, MAP sensor, throttle relearn etc, and doesn't show any errors at all.

Have you checked your earths? Dodgy earths will cause all sorts of problems. Mine wouldn't even start because of bad earth connections. Also, give the D4 a good clean with electrical contact cleaner. Check for water ingress in the fuse board(although I'm sure Fiat should have picked this up if it were a problem). Do you have your battery cover on?

Let me know how you get on. My car just starting to get on my tits too. lol

Was there not meant to be a software update for the 1.6 at some point?

james2609 said:

Hi Zer,
I have issues with my 1.6 cutting out too, but I do not have the same problem with dials etc going mental! I've also tried cleaning the throttle body, MAP sensor, throttle relearn etc, and doesn't show any errors at all.

Have you checked your earths? Dodgy earths will cause all sorts of problems. Mine wouldn't even start because of bad earth connections. Also, give the D4 a good clean with electrical contact cleaner. Check for water ingress in the fuse board(although I'm sure Fiat should have picked this up if it were a problem). Do you have your battery cover on?

Let me know how you get on. My car just starting to get on my tits too. lol

Click to expand...

My car starts fine with no problems whatsoever. i've checked a couple of the earths (i don't know where the 3rd one is) and i've cleaned them at the negative pole, also cleaned the chassis point earth as well.

Just this second got to the D4 and gave it a blast with contact cleaner. It was pretty immaculate to start with so i doubt that's the problem, will test it out later when i go out. I have a battery, it's not screwed on however but this wouldn't make a difference as it fits firmly over the battery and fusebox anyway. inside was bone dry.

I think the coils and sparks is my next stop although my sparks are really hard to get out, they are stuck solid!

MarkThompson4 said:

Was there not meant to be a software update for the 1.6 at some point?

Click to expand...

Update? there was no mention of this whatsoever at FIAT. Could it be?

body to engine earth...may look tight but it may be corroded under the insulation....never heard of a software update....
any decent motor factors carry universal earth straps in diferent lengths just add one in...
also, theres a small black purple (if i remember rightly) wire to rear of engine which sometimes stress fractures (makes intermittant contact/break)

CKP sensor?

I think i may have solved it !

finally got down to my coils and spark plugs and one of the plugs oil-fouled. the end of it was caked in yellowy deposits.

sprayed it off with contact cleaner and wiped it down. The car runs like a dream! no juddering, no hesitating or jumpiness when i change gear. off to Halfords in the morning to replace all 4 plugs.

I PRAY this is the problem afterall

Bad news! Spark plugs haven't solved it after all!

After 3 days of flawless driving it has just cut out on me again twice in the same journey. One of the times it wouldn't start up again neither. So now i'm thinking CKP sensor.

But i get NO faults whatsoever coming up!! :bang: the FIAT guy said i would get warning lights if the CKP was faulty. Think it's worth a check anyway.

Is there any way to check the CKP sensor for faults?

update ECU (throttle body and yes there IS a update for this) and if still the same you could be looking at a ECU fault.

These links might be of help, the DET at Ayr eventually sorted this one out for ChrisF who had symptoms the same as yours.

https://www.fiatforum.com/stilo/95997-beep-beep-engine-fault-becoming-frequent-3.html

https://www.fiatforum.com/stilo/113506-goodbye-stilo-looked-hot-but-you-were-not.html

Cheers for the links. Seems to me a trade-in is the only solution to this! have a lot more to check first though.

about this update, why didn't FIAT even mention such an update when i took it in? they reset the throttle body parameters so surely they should have checked to see if i had been given the update!?

Maybe update has already been done.

Why trade in, does the problem only happen in certain conditions, car hot/long/short run etc?

the problem is just intermittant. It can happen 5 minutes after i start a journey and it can happen while doing a good 75 on the motorway.

I have just taken my spark plugs out again after putting in new ones yesterday. the 2nd plug (from left to right) is covered in oil and it's only been in a day! seems i may have a problem with oil getting in there somehow.

what could this be? and could it be causing my car cutting out?

hmm, i don't think its the coils, i could check them anyway. The car idles fine and runs like a dream at the moment. Only problem is these very very intermittant cut out's.

Surely and oil covered plug is not healthy at all and would stop the plug from firing perhaps causing my cut-outs.

I also want to check the injectors but i don't know where they are or how to get to them?

injectors can be checked for resistance, which should be more than 13ohms and less than 16.5 ohms. There is a multiplug with 5 wires close to the ecu. the middle wire is the common 12v +ve feed, so you will have to check between that point and the other 4.
To me, the fact that the dials act erratically during the cut out seems more like a problem related with the alternator or a bad earth connection.

A faulty ignition coil can show up at any rev point, be it at idle or under load. Check to make sure they aren't damaged on the ends where they plug onto the spark plugs.

I have a similar problem where the no.1 spark plug gets a slight covering of oil. It's not on the actual electrodes of the plug though, if that had been (or happens to be your case here) then it could well be piston rings or valve stem seals are shot. But as mine is above that I assume it is a leak in the rocker cover gasket.

EDIT: I agree above that it is more than likely electrical related this problem. From a previous thread I remember someone removed the body computer and leaned all the connectors and wiring plugs for it and that solved everything on that persons car, should consider that

this is really getting me down now!

I'm gonna check the coils then as advised and make sure they are sitting on the plugs properly. Am i correct in thinking there is an earth connection under the main air intake pipe? if my car idles fine, how do i check for a faulty coil?

I know of the one that connects to the chassis, one on the ECU and i think the one under the pipe is the only other one. are there any more earths? i'm gonna take them all off and clean them.

cheers for all of the responses guys, really appreciate the help.

To be honeat it sounds as if you are going in circles...too many cooks.....?

You need to start again from scratch and be logical or take it to a reputable dealer/independent with correct equipment and dont forget the update or trade it in.

Well i've had enough of it and it's been in my local garage for days. Contacting them tomorrow to see what the deal is. Looking at a big bill i reckon but as long as this problem is sorted i'm happy to go!

I'll update on what's been fixed tomorrow!