it has been some time i have been on......good to see you all. question, whith the polaris running, if i disconnect the battery, it dies, should it? i have a brand new ecm in it, part #2203348. thank you

 

You shouldn't disconnect the battery with it running because it can blow all the light bulbs. But IMO that shouldn't stop it from running.

 

DON'T disconnect a battery while running! It can not only blow out bulbs,but can cause damage to sensitive electrical components along with the new ecm you installed!! This ignition isn't like the old "magneto triggered" only system of years past to where they could be cranked with a dead battery!And even that system manuals warns about disconnecting a battery on a running machine! OPT

 

so, what can be the problem now? thanks

 

What was the reason for disconnecting the battery in the first place while it was running?? OPT

 

check the voltage while it is running to see if it is even charging. it should be at least 13.5 or better. as others have mentioned these newer bikes can destroy the eletronics w/ it running and no battery.

 

to see if it still runs with the new ecm, but it didn't. the only thing the new ecm corrected was the fan, which wouldn't start at all, now it does.