Technical 1.4 12v brava won't start!

[zamashin]

i think the problem to my car is the immobiliser.
i cannot think how the immobiliser can break like this ...anyway.
my key is not recognized anymore , power and all is comming to immobilizer and still is not reading my key.
i manage to get another ecu + immo+ slave key(not master) from another auto exactly like mine and still not working.Do i need the red key from the new ecu?

i heard about a thing called immo off.can someone guide me ?
is any other possibility except immo off to bypass the immobiliser?

a new ecu i am not buying because is not worthing, too expensive related to car price.

 

[Adrian Bravo]

That should work as long as the parts are not broken. Maybe there is a problem with the cars wiring.

If you have not tried yet change the immobiliser aerial wire. It is a black wire with a loop on the end that goes around the key. You can change this for any other part and people have found these to be faulty before.

You can see the black aerial here.
https://www.fiatforum.com/gallery/data/1914/0c10_1_sbl.jpg

Try finding an ECU repair shop the type that would fix them at component level. They should have the ablility to bypass the immobiliser

 

[zamashin]

my car is fixed.weeeeeeeeeeee
first i would like to thanks all of you for helping , because at one moment i was kind of lost.With all the data from here i managed to fix it.
everybody asked pointed the ecu , then the immo, then other things, so i thought it's nothing from what they said because the car was running before clutch changing.
So , i decided to remake all i didn't take the engine out but everything else i did it again.I descovered that at pin 6 from ecu plug is not comming any power (that's the immo power) and i found that that wire was broken , i change it and it's working as before.

thank's again all.

one more final thing :
where can i find a relation between rpm and speed , for example at 3500 rpm i have 110 km/h,(my engine has 241.000 km) because i think i am loosing some compresion / power.

 

[skaramazoo]

Glad you got it sorted out at last. It's imperative that all electrical connections should always be checked thoroughly.
Of course there's a direct relationship between rpm, gear selection and speed but it also depends on the type of road surface as well as the fact it has to be flat and absolutely level - not uphill or downhill. 110 km/h @ 3500 rpm sounds pretty reasonable to me.

 

[fiat37]

Speed at defined rpm at defined gear is always same independed of engine power, because gear ratios are fixed. It can only change if u drive in neutral gear or clutch is sliping.