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Discussion Starter #1
Hi Guys,

Sounds like there are plenty of these messages popping up for different reasons but didnt find one out there where the car refused to start after...

Motor Control Systems Failure light came on last week and engine wouldnt start, played with relay box and battery connectors and no go. Seemed electrical so played with the central locking on the key a bit and she started.

Today it cut out while driving and motor control systems failure came on, did the same and eventually got it started a lot longer that before. The light stayed on this time and cut out again down the road. I had to get a mate to tow me home.

Has anybody come across this before? It seems like the immobilizer is cutting in...
Would it be down to bumpy surface in the road messing with a faulty connection?

All ideas much appreciated.
 

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was it cutting out when it was warm, and only restarting after it cooled down for a while?
 

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Discussion Starter #3
Not necesarily.First timeithappened it was when i arrived back to the car after 30mins. IT does however seem to start after a time period. There was a lot of city driving last night when it was particularly bad...
 

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It's my understanding that immobilisers are designed to not cut the engine once the car has started and is moving since it's obviously dangerous. Wouldn't stop it cutting in I guess if there is a wiring problem.

You need to get diagnostics done - could be loads of things causing this.
 

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It's my understanding that immobilisers are designed to not cut the engine once the car has started and is moving since it's obviously dangerous. Wouldn't stop it cutting in I guess if there is a wiring problem.

You need to get diagnostics done - could be loads of things causing this.
exactly:thumbs:
 

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Two years ago the MCSF warning popped up on my car. A new battery fixed that and I have not seen it since. In fairness, I should also say that occasionally the car was difficult to start however, I would advise a full diagnostic investigation after ensuring that all earth points are checked and that the alternator is working efficiently.
From what I am led to believe modern Alfa's (like most other modern cars) are voltage critical and any glitch/drop-off will bring up the MCSF warning along with various symptoms.
 

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Two years ago the MCSF warning popped up on my car. A new battery fixed that and I have not seen it since. In fairness, I should also say that occasionally the car was difficult to start however, I would advise a full diagnostic investigation after ensuring that all earth points are checked and that the alternator is working efficiently.
From what I am led to believe modern Alfa's (like most other modern cars) are voltage critical and any glitch/drop-off will bring up the MCSF warning along with various symptoms.
correct:thumbs:
 

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Discussion Starter #9
Got the diagnostics done last night. Its the crank shaft sensor thats packed in and as a result the CPU doesnt regognise that the engine is in motion or wants to start. €160 for diagnostics, new part and fitting :( . Thanks for the help guys.
 

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160!!! Wow that is steep. Crank sensor doesn't cost much and fitting it is fiddly but relatively simple. Its the diagnostics they stung you for there.
I was quoted £45 plus vat just to plug the car in!!! So I went and bought the cable and the software for £75.
 

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Yeh Doc87

I saw your price.....that's roughly £140...I think i did ok.
Found this mechanic down the road ,saw he had diagnostic equipment just to double check.He did a good quick job....I'll use him again even tho' he's not an Alfa specialist.

At least your car's back on the road :)
 
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