New to site with questions

[ajwbatman]

I have an 1987 Milano, It has the 2.5 V6 w/the Boush fuel injection system. I just got it and it won't run. I thought it might be the inertia switch but I am unable to locate this switch on this model, as you can tell I am new to Alfa. Does the Milano 2.5 V6 have an inertia switch?

This morning I tried to start it again and it started and ran for a few seconds. Could it have been running on fumes for those three seconds or is the inertia switch fine, if it has one?

Is there any way of bleeding or priming the fuel line? or is it done automatically when the fuel pump engages? or do you think that one of the two fuel pumps have gone bad?

Thanks for your help, I am glad to have found such an informative site. I am gonna go read some threads and search for the answers but please if anyone can help I appreciate it.

[Murray]

I don't believe the Milano has the inertia switch.Some GTV6's do.If you want to verify operation of your fuel pump do the following:

Open your air filter compartment and with the ignition ON open the flapper vane inside the AFM.This closes a contact which completes the circuit to the pump.At this point you should hear the pump (there is only one).It is located under the car just in front of the passenger side rear wheel (assuming you have a LHD car).You should also hear fuel running through the fuel pressure regulator at the front of the fuel rail and back down the return line.

[Mezevenf]

Why is it every 75 I've heard here in Aus seems to run the fuel pump when you turn the key to on?

At least I always assumed it was the fuel pump...

[Alfisto Steve]

If fuel pump runs when you turn key on on GTV6, Milano, Fiat or Lancia with Bosch fuel injection usually the safety contacts in air flow meter have failed and stay closed when flapper in AFM closed.

No inertia switch on later GTV6 and all Milano I know of.

[junglejustice]

On the Milanos it has a safety two-stage fuel-supply setup... Turning the key to ON does not provide fuel... Cranking DOES (in the first stage), but once you release the key and the engine is running, the movement of air through the AFM triggers the 2nd stage to provide fuel from there on out until the engine stalls/dies... (Its a safety-thing in the event of an accident.)

When I first installed a stand-alone engine management system on my Verde (and before I was able to master the double-relays up on the passenger-side fire-wall), I had trouble starting the car with the stock L-Jet ECU unplugged... It would start and sputter while I was cranking the key, but die just as soon as I released the key (meaning that the stage one fueling described above worked just fine, but that the 2nd stage also described above would fail to activate and take over fuel-supply as soon as I released the key.)

To test the theory, on a few occasions I would actually keep cranking the key and drag the starter (very bad for it), just to verify that this was what was actually happening and indeed, it would keep running while I kept the key cranked, but stall just as soon as I would release the key - so, fuel issues. In my next stage of unassisted exploration, I found a mechanical solution to my electronic challenge;

I plugged the AFM back in and just left it dangling there in the engine-bay - tied-back with a zip-tie! I jammed a number 13 spanner (a wrench, a tool - whatever ) in the flapper inside the AFM and it worked!!! It triggered fuel - it turned the fuel-pump on continously! Keep in mind that I was now running an open air intake with simply an air-temperature sensor in the new intake pipe, so the AFM was just hanging there - open - (with no vacuum-issues) just to trigger signal to the double-relay...

Later that day over at Michael Harris' house (after a good laugh), he and I tracked-down the two pins in the connector of the AFM-portion of the harness and added a jumper that also triggered the fuel-pump relay full-time... (I could now also return the # 13 spanner to Group 2 and remove the AFM altogether!) Even later yet, I was able to install a proper relay for the fuel-pump and remove the last of the OEM Bosch harness and everything from L-Jet...

I really did learn about relays, L-Jet and the restrictive AFM the hard way...

[ajwbatman]

Just wanted to say thanks for all the great info. I will keep you posted.

[Mezevenf]

Quote:

Originally Posted by Alfisto Steve If fuel pump runs when you turn key on on GTV6, Milano, Fiat or Lancia with Bosch fuel injection usually the safety contacts in air flow meter have failed and stay closed when flapper in AFM closed. No inertia switch on later GTV6 and all Milano I know of.