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Old 1 Week Ago   #1
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500 1.2 Pop cutting out and not restarting but no errors!

Hey Fiat Forum
I have a 2010 500 1.2 Pop and it cuts out randomly after 5 - 45 minutes and wont restart immediately. There are no errors present in the system.

There is no spark when it happens but plenty of fuel pressure.

So Far;
New crank sensor
New cam sensor
Coil pack tried
new engine ground cable
battery ground cable checked
power to coil pack ok
power to injectors ok
two keys tried with the same results
no warning lights on dash
continuity to all sensors from ECU checked and ok

I think the the fault could lie with an immobilizer / body computer / engine computer issue but i am surprised that there are no errors. OR is this a case of I need a better diagnostic tool?

Any ideas? Any pointers to look out for?

Any help appreciated
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Old 1 Week Ago   #2
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Re: 500 1.2 Pop cutting out and not restarting but no errors!

Wow Nobody has had this fault?

No suggestions?
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Old 1 Week Ago   #3
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Quote Originally Posted by Tricolare View Post
Wow Nobody has had this fault?

suggestions?
Look in the 500 section
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Old 1 Week Ago   #4
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Re: 500 1.2 Pop cutting out and not restarting but no errors!

Thanks for the suggestion but I did before I posted.

I have also now looked again without success.
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Old 1 Week Ago   #5
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Quote Originally Posted by Tricolare View Post
Thanks for the suggestion but I did before I posted.

I have also now looked again without success.
Have you had the CAR scanned for error codes .. ?

It could be something in the body that disabling the engine..

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Last edited by varesecrazy; 1 Week Ago at 12:40.
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Old 1 Week Ago   #6
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Re: 500 1.2 Pop cutting out and not restarting but no errors!

Yes and there are no errors recorded. I have bought the Think Diag software for deeper diagnostic as my VCDS is useless unless its a VAG model. Today I found there is no injection duration time displayed within the live data.

There is no spark however the coils are being 'loaded' during each crank.

I have rechecked the injectors and there is Ignition 12v to each yet no ground created during cranking.

I need a function list explaining the immobilizer methodology and a wiring diagram for the immobilizer so I can track the cables from ignition switch to body computer then the can line to the engine ecu. Any ideas where I can get this?

I will explain what I find in detail on this site 'when' I fix it.
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Old 1 Week Ago   #7
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Re: 500 1.2 Pop cutting out and not restarting but no errors!

Probably best to open a new thread in the 500 section.
Detail what you HAVE found ..
and what you NEED to know

Charlie
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