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Low idle when warm

srx901

Extreme
Joined
Jul 21, 2014
Messages
68
Age
63
Location
Oswego NY
Country
USA
Snowmobile
turbo nytro
Ok my turbo nytro idles low when restarted when it is at operating temp. Sometimes it starts hard too. I just changed the plugs, checked the vac lines with a gauge and ran the diagnostic test on the isc valve So now I am thinking either the therm switch to the isc valve or the ecu (computer) in the front of the sled. I also have a powercommander PC V PTI that I just changed a map to Ulmer racings Map and it runs better off idle. but I am still having low idle when warm seems to rich like not enough air is getting in.
 

how low is your idle? When I've been riding for a few hours and my sled is warm ( 180-190 degrees ), it will idle lower than normal...below 1500 rpm.
 


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