Boat parts & accessories for Johnson, Evinrude, Mercury, Mariner, Force, or Yamaha outboard motor, & Mercruiser, OMC stern drive. 

  TMS Message Board

Return to Main Board

Reply to this Topic

overheat at idle

yamaha 40/60 jet asked on 8/7/2019 8:19:33 AM
2010 yamaha overheats at idle only
ECM controls idle speed , so cannot bump up idle rpm
i can cheat rpm at throttle body stop and bump up idle 150 rpm and no more overheat, but ecm will adjust idle speed control valve in a couple minutes as it tries to fix the higher rpm that i just cheated and it will overheat again
New waterpump, new t-stat
Cannot find restrictions in passages
Old impeller looked like new
Baffled !!!





  Company Info Site Features Customer Service

johnson evinrude mercury
Contact UsAbout Us ForumFAQFixit GuidesSitemap ShippingOrder StatusPrivacyTerms Of Use
Copyright © 2020 TMS Marine Parts