2003 Johnson/Suzuki 70 hp 4 stroke over temp alarm

cbroadway

Recruit
Joined
Aug 7, 2008
Messages
3
I have a 2003 Johnson/ Suzuki 4 stroke that goes into overtemp alarm at 3/4 thottle and above. The dealer has replaced the impller in the water pump twice and the thermostats once. I continue to have the problem. When it alarms i only have to shut the motor off and restart and as long as I don't go over about 3/4 thottle it runs great. Any ideas?
 

clanton

Rear Admiral
Joined
Jul 9, 2001
Messages
4,876
Re: 2003 Johnson/Suzuki 70 hp 4 stroke over temp alarm

what code is set in the computer?
 

cbroadway

Recruit
Joined
Aug 7, 2008
Messages
3
Re: 2003 Johnson/Suzuki 70 hp 4 stroke over temp alarm

Don't know about any code. I did a search on this site and it fits the description of the bad gromet under the power head. I ran the boat today and it runs great if I don't trim it out, keeping a load on the prop. as soon as I trim it and the rpms build up it goes into the over heat alarm.
I think I'll take it to the dealer tommorow. Thanks for the effort.
 

kingfisher1700

Recruit
Joined
Oct 17, 2009
Messages
1
Re: 2003 Johnson/Suzuki 70 hp 4 stroke over temp alarm

hello, have the same problem with my 2003 90hp 4 stroke. what was the final problem with your motor ? thanks.
 
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