Technical Replacing the ECU

[Zebulon]

Hi all,
Another thread about the dreaded ECU..

I have a '99 Punto 16v 85. A while ago I had an intemmitent fault where occassionally the injector light came on an the car seemed to be running on just 2 or 3 cylinders - i.e. it sounded like a beetle and had no guts whatsoever. There was also a slight smell of petrol.

An 'expert' told me that the injectors had failed I was just about to fork out on a set + fuel bar thing when I stumbled across this forum.

I'm now - after reader more tales of woe - that it is the ECU that is faulty so have obtained a replacement from a breaker.

Of course now the replacement needs reprogramming / deactivating so I can fit it.

I'm not worried about having the immobilizer working - the car is not worth a great deal of money - I just want to be able to drive the thing..

I have all the keys and the code card for the original ECU.

Someboby please tell me that this is fairly easy and not going to cost me more than the car is worth. i.e. not very much...

Thanks:bang:

 

[dave]

if you fit the new ecu, code box and ignition lock, it should just work

 

[Zebulon]

Thanks,
I have only got the ECU from the breakers. I did try fitting it and there was no ignition, so I guess / hope that I just need to disable the code box?

 

[forty]

Seems like it's still looking for the original car's code. Red key Fiats are KEY coded so that makes 'em peculiar to the car that the ECU's originally on.
I reckon you'll need to have it de-coded (blanked) and then your red key should give it it's original I.D. Check it out with a Fiat dealers' parts dept.- they sometimes are quite helpful.
40

 

[Zebulon]

Re: Replacing the ECU: I NEED A DIAGONSTIC CHECK

Hi
I've spoken to the Fiat dealer and they reckon that it is unlikey to be a faulty ECU and want to do a diagnostic test on it - trouble is they want 60 quid + vat . They are also about 20 miles from my house and i don't fancy driving that distance on two cylinders..

Does any one know of someone local to me (I'm in the Fleet area of Hampshire) that can run a diagnostic..hopefully for a bit less than seventy quid..I'm not tight - just skint!

THANKS

 

[samsonite]

Re: Replacing the ECU: I NEED A DIAGONSTIC CHECK

Something similar happened to my 1.2 8v (mk2A) i was running on 3 cylinders, but it was because an injector failed. i changed the injector and it was all fine... try cleaning the injectors before changing them.. could just be they are blocked....