Hi.
Cool down the compressor, remove the start devise and if it's rattles - replace it. Before ordering the part use the multimeter to check the continuity between the 3 compressor's pins and the ground. If there is continuity between the pins and no continuity to the ground - replace the relay/overload
Part number: 2188831 
Here are the breakdown diagrams and
Replacement parts for Whirlpool ED2CHQXKB04 SIDE-BY-SIDE REFRIGERATOR | AppliancePartsPros.com
Post the results.
Simon.