Fuel Pump running when car is off RESOLVED

[4uall]

Was walking by Fiona last night when I noticed my fuel pump was running

It isn't turning off unless I remove the negative battery strap. Which has never happened since I've owned her (2011 - present)

Anyone seen this? Can the double relay be causing this problem?

[divace73]

double relay or the switch in the AFM??

[4uall]

switch in the AFM - where exactly is that located? pic?

http://www.fiatspider.com/f15/viewtopic.php?t=23112

so I need to remove the cover? Not looking forward to doing this. Will try the dual relay replacement tonight after work and see what happens

[So Cal Mark]

it's not a relay issue unless someone changed the wiring around. Remove the cover from the afm to access the pump switch

[RRoller123]

The plastic cover to the AFM has a lip that sits well down inside the walls of the AFM. Maybe 1/4" ?

Just use an Exacto and see if you can cut through the seal around it, where it meets the casting. Likely it has been done before, and may have an easy to cut RTV sealant. I use standard white house caulking (Home Depot - Alex Plus) to reseal mine, and it is easy to cut through that later on if needed. Pry up one little bit at a time, going around the cover, and it will eventually let loose. The cover is actually made of pretty strong plastic, but we don't need to be breaking this thing.

Pete

[klweimer]

You could try tapping the side of the AFM to see if the air vane/switch closes. Or peek in the intake and see if the vane is moving freely.
Kirk

[spider2081]

I don't think the AFM switch is the issue. To check it simply disconnect the AFM connector. The dual relay's "control relay" has to be engaged for power to reach the fuel pump switch in the AFM. The control relay should only be powered in the "start or run" positions of the ignition switch. If the ignition switch is "off" there should be no voltage going to the fuel pump switch in the AFM. Once the "control relay" is engaged voltage is fed to the AFM fuel pump switch to engage the "fuel pump relay" in the dual relay. I would inspect the ignition switch connector and dual relay area.

[4uall]

RESOLVED

the 16amp fuse was messed up, replaced and no more noise & Fiona starts without issue

[spider2081]

Great news. Which 16 amp fuse? The inline fuse for the Pump or one in the fue panel?

[4uall]

sorry inline, see new pics