General Hardnekkige storing

[Gastonf]

Beste Forum leden, ik bezit een Fiat Panda uit de 6e maand van 2011. Het rijdt uitstekend. Type; 169,

De vraag die ik heb is is dat het oranje motorstoring lampje brandt. Bij het uitlezen door een OBD in de garage krijg ik de melding dat er een overslag is is de cilinders 2 en 3.

Maar bij nader garage onderzoek is er geen overslag in de cilinders, niet in 1, 2,3,4. Het vermogen is ook uitstekend, heeft nog kracht over in zijn overdrive.

Er zat een breuk in de bobine en die is vervangen voor een nieuwe, daarnaast is er ook een nieuwe accu geplaatst, maar het motorstoringslichtje( oranje) blijft branden en bij het uitlezen blijft hij maar aangeven dat er een overslag is in cilinder 2 en 3.

Wat is er hier aan de hand? Iemand de gouden tip voor me?

 

[Gastonf]

 

[koalar]

That's a 1.2 euro 5 engine 69hp

With a single coil pack under the air box and variable valve timing

What's already been tried

 

[Gastonf]

That's a 1.2 euro 5 engine 69hp

With a single coil pack under the air box and variable valve timing

What's already been tried

Pfff, what has already been tried, its has standing several times in the garage...its been reading out by an OBD ( several times.) And every single time is says misfire in 2&3
New is the Bobine, the battery is new. Changed fuel injectors, change sparking plug, changed the spark plug sequence. like 2&4 and 1&3

Something strange however is is the fact that the OBD several times cann't make contact with the engine. He still is asking to connect the battery ( but that one is still connected) and that one is on a regular base. Contact is on, motor ain't running.
No power loss,
Another strange thing what happend was after I put a brand new battery in the car and the faults were erased by the computer in the garage ( the light; motorengine orange) was gone for a about ten days...after those ten days it started all over again.
Motor runs regular and it knows no stuttering. No powerloss, even got power in overdrive.

 

[koalar]

That's great feedback back

Have you had the car long, did this suddenly start to happen or gradually got worse

Any loss of coolant or oil

Any pattern to when the engine light comes on

Such as

High RPM, bumpy roads, up hill, sharp corners and so on

What do the middle spark plugs look like when compared to the others

Do you have a scan tool of your own

 

[Gastonf]

That's great feedback back ( you're welcome, even FIAT NL doesn't take me serious, glad you will think with me about this stuation)

Have you had the car long, did this suddenly start to happen or gradually got worse. ( Have the car for more than over a year and it started 15-20 minutes when I drove away from the garage where I bought it. So pratically inmediate. ( I suspect but I cann't prove it that just before I drove away from the garage they deleted the faultcodes, otherwise had I would have let them fixe the problem or cancel buying this car.)

Any loss of coolant or oil ( none so ever , oil has still that golden look) Coolant ok, even the working temperature when I'm driving a longer distance or when i'm drive with a trailer are just fine. Also when I did the test drive before I bught it there was nothing unsual at that moment. No lights unsual. But you know ( feel) if the engine is fine or not and I didn't hear or saw stange thing which should have been a red flag.

Any pattern to when the engine light comes on; Yes , inmediatley when I put the key in the starter lock, but before I start the enigine you can see for instance that the doors are open, brakes are ok, oil level is fine etc, etc. After when you start the engine all lights should go blanc. They all do, only except one , guess which one; yep the motorengine ( the orange) When I drive sometimes its starting to flash several times and after that its a steady light again.

Such as

High RPM, bumpy roads, up hill, sharp corners and so on; No high RPM, but sometimes when the trailer is a bit heavy and he needs more power , the engine delivers the power and I push the trottle a bit deeper in.. Without any hesitation and again, no power loss, she is a spicy car and reacts inmediateley. I'm at the age that I'm not go fast anymore, just to say it easy, I don't have the need for speed any more. I also often use my enigine break. but the light still stays on. ( its just a nasty bug when you are trying to sleep, you want to kill it but evertime your swing you completeley miss. I don't have a fear to drive, but in another case, what if it is a pre-warning for something worse...as we say over here, we are driving in circles around the church. I still not afraid to drive...

What do the middle spark plugs look like when compared to the others ( They look all the same, ( forgot to say that I have replaced the sparkling plugs as well) My gut feeling says its something not mechanical but electric..

Do you have a scan tool of your own: I do have a scantool of my own: its a Vident iAutomate-Pro ( with latest software. What my still puzzles is that after the change of my battery I had 10 days no problem with the lights, everything ( dashbaord) was ok so I thought that the change of the battery was the solution. And what my nowadays irritates is that when I'm connect underneath my dashboard ( with the Vident) it sometimes scans but at the end says, no battery connexion. So I cann't do anything at the moment...and don't have an actual status. Strange problem...

 

[A3jeroen]

Still looks like a bad connection on a batteryterminal or a bad earthconnection to me.
Is there a separate connection between transmission and engine? is the earth to the coilpack (bobine) 100% ok?

gr J

 

[Gastonf]

Still looks like a bad connection on a batteryterminal or a bad earthconnection to me.
Is there a separate connection between transmission and engine? is the earth to the coilpack (bobine) 100% ok?

gr J

Hiya, I have to figure that one out, but I do not know how yet... coming Monday there is some one coming over who has more knowlegde about electricty. What I do know however is that the there was a breach in the bobine, we installed a brand new one and the mechanic who did that job thought that the problem was over...but a few days later it appeared again...

Can you give me some advice how to check your second sentence? I don't have enough knowlegde to follow up your advice in this one, me and electricty is beyond my capacities. Thank very much by the way for thinking to find a solution for me. much appreciated! Are there any example video's on You Tube?

 

[A3jeroen]

You could bridge the earth connection with a jumpcable between - and engine. Make sure to put the clamp on bare metal.
The coilpack should have an earth connection to the engine. Although mine has 4 pencil coils, it has a mutual ground. Make sure contacts are clean and the bolt is tight. You could put some vaseline on all contacts.

gr J

 

[koalar]

Hiya, I have to figure that one out, but I do not know how yet... coming Monday there is some one coming over who has more knowlegde about electricty. What I do know however is that the there was a breach in the bobine, we installed a brand new one and the mechanic who did that job thought that the problem was over...but a few days later it appeared again...

Did they change the HT leads
The middle two are different, but they can be swapped for the outer two for testing

Can you give me some advice how to check your second sentence? I don't have enough knowlegde to follow up your advice in this one, me and electricty is beyond my capacities. Thank very much by the way for thinking to find a solution for me. much appreciated! Are there any example video's on You Tube?

You load the circuit and measure the voltage drop
Same engine ECU and so on

If it's less than 200mv is okay,

Here's mine failing, lights a test light but still cranking, not a great video as the sun is behind it and you have to watch full screen, the other end is directly on the battery negative post

Looking at the corrosion on top of your cam cover

it might be worth looking at this earth, take it off and clean it, black cable bottom right

 

[Gastonf]

Did they change the HT leads
The middle two are different, but they can be swapped for the outer two for testing


You load the circuit and measure the voltage drop
Same engine ECU and so on

If it's less than 200mv is okay,

Here's mine failing, lights a test light but still cranking, not a great video as the sun is behind it and you have to watch full screen, the other end is directly on the battery negative post

View attachment 453547



Looking at the corrosion on top of your cam cover

View attachment 453535

it might be worth looking at this earth, take it off and clean it, black cable bottom right

View attachment 453550

Thnx fot the input, will do so as soon its stops raining... :-(

 

[Gastonf]

Thnx fot the input, will do so as soon its stops raining... :-(

Hiya, the problem has been solved; one of the pins inside the plug of the boardcomputer was
crooked and did not make direct contact with the plug box on top of the on-board computer
that is why there was no good contact and the error message appeared. The pin has been repaired and the problem is gone.
Thank you so much for being so suportive!!!!!!
"