Q45 FPCU replacement

[thsmd4u]

Have a 1994 Q45 89,000 miles. Had fuel pump replaced-did not know to change FPCU. Still slight hum. Have read other posts. Great information."How" do you access the FPCU? Apparently can't access from trunk. Having difficulty getting back seat out to access the sundeck. Would appreciate any help you can give.

[96Qowner]

Here's the definitive thread for fuel pump and controller replacement:

zer...age=2

[maxnix]

Don't have to change FPCM unless it is fried or otherwise invisibly damaged.

You should not hear a hum once it is all buttoned back up. Was it an OEM pump?