BMW 320i E46 2005 fuel-pump error

Andreasmzk

New member
Hi folks,

I could use your help diagnosing this persistent issue I'm having with my baby:

On cold starts, the fuel pump will not boot up...the car cranks fine, but won't actually fire up. Currently, the only way to get the car to start is to switch the ignition from "Power" to "On" until I hear the Fuel Pump actually start up, although this morning, even after hearing it, shortly after starting, she would die (it took me 4 tries and a heavy foot to finally get her to "stay" on). I had my fuel pump replaced less than a year ago, and a full service done less than 2 months ago...shortly after, I unfortunately grinded to a stop atop the BRT bus lane's yellow-brick-wall thanks to some thick fog and an escaping criminal, but after getting it checked out, only the smash guard took a bit of a hit...
In the meantime, I had my fault-codes checked, which comes back all-clear, I had my fuel-relay replaced, and otherwise, had my car checked all of 6 times at Mech1 for the same issue, to no avail...needless to say, I'm pretty desperate...! Biggest problem is, she starts fine when warm, and Mech1 cannot replicate the issue because by then, it's warm outside...
I noticed posts here describe similar problems, but always detail something that isn't the case with mine...

Thanks to all!
 

Andreasmzk

New member
Just an update: I now had all my applicable fuses replaced including DME, replaced the fuel pump, fuel filter and fuel relay, got a new battery put in and had a complete software upgrade..........and there's not a single fault code showing up anymore...yet still, the fuel pump just won't boot up when she's cold........:bangdesk:
 
Top