So after reading about outboards overheating originally started in 2006 and some other threads in this forum. I think my problem is thermostats.I have mercury 2005 60 EFI temp starts rising only at idle normal temp around 130-135 but at idle it quickly starts rising till alarm sounds around 175 180 .However if i rev engine above 1100 rpm temp quickly starts to drop to normal .I have smartcraft gauge which is very useful because i can watch temp and see how it reacts to rpm change! So I have no problem as long as I not just not sitting there idling.My question is how do change thermostats where are they located. I have already changed pump impeller and flushed and back flushed motor ever time i use it .I"d like to change thermostats instead of having to let it sit in shop for several weeks during summer. I"be thankful for any help.
