AFM flap

Gotta love that wiring . . .
Leonard124
Posts: 29
Joined: Sun Feb 16, 2014 9:54 pm
Your car is a: 1980 Fiat Spider 2000
Location: Montreal,Canada

AFM flap

Postby Leonard124 » Sun Sep 24, 2017 5:17 pm

Does anyone know which 2 wires act as the switch for the fuel pump in the AFM ?

Intermittant power to fuel pump...so I am suspecting the AFM flap or the double relay.

When I move the flap in the AFM with ignition ON, sometimes the pump works and sometimes it does not.
When the pump does not run, I do not hear the relay click under the glovebox.

Thanks
Leo
1980 Fiat spider 2000 f.i.

spider2081
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Your car is a: 1981 Spider 2000
Location: Wallingford,CT
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Re: AFM flap

Postby spider2081 » Sun Sep 24, 2017 8:26 pm

Have you removed the black plastic cover from the top of the AFM?? I like to remove it and inspect the fuel pump switch contacts and the rest of the workings.

Leonard124
Posts: 29
Joined: Sun Feb 16, 2014 9:54 pm
Your car is a: 1980 Fiat Spider 2000
Location: Montreal,Canada

Re: AFM flap

Postby Leonard124 » Sun Sep 24, 2017 9:55 pm

No...wanted to see which contacts they were without removing the lid.

Was able to figure out the contacts with the use of an old wiring diagram I have.
I did this at the combination relay.

The contacts work good...so it is not the AFM switch.

Seems the double relay is the culprit.
Not powering the fuel pump.

thanks
Leo
1980 Fiat spider 2000 f.i.

ORFORD2004
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Joined: Wed Mar 17, 2010 9:48 pm
Your car is a: 1983 PININFARINA
Location: Sherbrooke, Qc, Canada

Re: AFM flap

Postby ORFORD2004 » Mon Sep 25, 2017 1:09 am

Open you double relay, you may have broken soldering.

spider2081
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Re: AFM flap

Postby spider2081 » Mon Sep 25, 2017 7:20 am

Open you double relay, you may have broken soldering.


I'm for opening things and looking/inspecting. For me it also helps me understand how things function.
The connectors on the relay can be swapped and then the relay will not function. So I mark the connectors and relay to be sure I replace them properly.
The small female connector on the heavy brown wire sometimes becomes intermittent and needs tightening.

Leonard124
Posts: 29
Joined: Sun Feb 16, 2014 9:54 pm
Your car is a: 1980 Fiat Spider 2000
Location: Montreal,Canada

Re: AFM flap

Postby Leonard124 » Thu Oct 12, 2017 7:23 pm

So it seems it was the combination relay. Installed a new one and after driving 600 kms, all is good.

Now i guess I can open up the old one and see what went wrong.
Leo
1980 Fiat spider 2000 f.i.

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81SPIDERMATT
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Joined: Mon Oct 11, 2010 5:10 pm
Your car is a: 1981 spider 2000
Location: FORT COLLINS, CO

Re: AFM flap

Postby 81SPIDERMATT » Thu Oct 12, 2017 10:06 pm

i would like to know what you find and how easy/hard it was to open and inspect


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