Too Cool

spdracr39

Lieutenant Junior Grade
Joined
Aug 30, 2010
Messages
1,238
I have a 2008 5.0L MPI that will not get the temp above 125. I guess the t-stat must be stuck open. I did confirm the readings with an IR temp guage. Question is should I leave it alone till the end of the season or go ahead and change it? I just got this boat and did notice it uses significantly more fuel than my older same model but with a carburator.
 

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: Too Cool

Fix it now, the ECM will cause it to use more fuel because it sees a cold engine. As the engine warms up, the ECM cuts back on the fuel.
 

spdracr39

Lieutenant Junior Grade
Joined
Aug 30, 2010
Messages
1,238
Re: Too Cool

Got it changed in no time and now it runs a smooth 160 :)
 
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