Alfa 75 engine identification ... ?

[AlfaACT]

Attached is a pic of a 75 engine bay.

Q1 2.5 or 3 litre?
Q2 L-Jetronic or Motronic?

How are they distinguished?

Thanks,
Peter.

[AlfaACT]

Thank you :-)

[scott.venables]

I think that's a Motronic.  The plug on the AFM looks narrower than the L-Jet cars and there's a wiring connector tied up with the sparkplug wires on the top of the cambelt cover for the crank angle sensor.

Scott

[AlfaACT]

I have attached another pic which hopefully might help confirm from visual identification?
I assumed that the casings of the ECUs would be different and therefore the identification easy - but not so it seems.

Otherwise, how can you tell definitively?
Sounds like the lid (black cap?) might need to come off - but what do we look for then?

Has anyone got a pic of a Motronic unit?

Peter.

PS The greenish tinge is NOT biological - its a feature of the graphics compression technology!

[scott.venables]

The extra connector on the cambelt cover I'm talking about is for the crank angle sensor, this reads a toothed wheel on the back of the crank pulley.  The L-jet cars don't have this.

[VeeSix]

This is a 3 litre Motronic
The 3 litre Motronic has a crank angle sensor and no wires going to the distributor  

[bteoh]

Wasn't the motronic only fitted to the Potenziatas? Normal 75 3.0L V6's still ran L jetronic?

[VeeSix]

Alfa ACT, is your 75 a Potenziata?
Does it have black seats or grey?
Certainly looks like a Potenziata engine bay to me 

[ARQ164 Shane]

hi ,
a mate , had a Potenziata and it had a return spring on the th/body ??

[VeeSix]

I have a Potenziata, no return spring on the throttle body, maybe someone added it from a GTV6