BAD ECM ON A 2005 POLARIS 500? DONT REPLACE IT! GET RID OF IT! I'LL SHOW YOU HOW.
Channel: Titaniumman Garage
Date: 2020-05-15

I'll show you how to eliminate the problems a ECM can do and replace it with a CDI box and Rectifier. If the fan stays running when the key is off you have a bad ecm.