Gt40 bugs

Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic

   Trying to get the winter bugs out.   Gt40 Boat runs good for the first 5 min, then it progressively starts to bog out until it won’t run.  I pulled the plug on the ecm and water came out of the boot.  Opened up the Ecm and it looks like one of the caps got hot. Also the fuel pump relay will start clicking and turn the pump on and off. 

For testing can I jump the relay fuel pump to see if I can make it stay on if the boat will run past 5 min?  My theory is the ecm is bad, and kicking in and off fuel pump once it warms up.  Any ideas???

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
Mike9812121298 Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: March-24-2017 Location: Seattle Status: Offline Points: 139	Post Options Post Reply Quote Mike9812121298 Report Post Thanks(0) Quote Reply Topic: Gt40 bugs Posted: May-22-2018 at 11:55am
	Trying to get the winter bugs out. Gt40 Boat runs good for the first 5 min, then it progressively starts to bog out until it won’t run. I pulled the plug on the ecm and water came out of the boot. Opened up the Ecm and it looks like one of the caps got hot. Also the fuel pump relay will start clicking and turn the pump on and off. For testing can I jump the relay fuel pump to see if I can make it stay on if the boat will run past 5 min? My theory is the ecm is bad, and kicking in and off fuel pump once it warms up. Any ideas???

tryathlete Members Profile Send Private Message Find Members Posts Add to Buddy List Platinum Member Joined: April-19-2013 Location: Lake Villa, IL Status: Offline Points: 1796	Post Options Post Reply Quote tryathlete Report Post Thanks(0) Quote Reply Posted: May-22-2018 at 11:24pm
	Mike, when that boat ran aground, it may have taken in water and drowned the ECM. Water coming out of the ECM tells me it’s probably not long-term functional. Maybe you can dry it out and make it work but it sure makes me think you’re gonna need a new one. This one doesn’t seem to be worth saving. Might just be worth sending the old one out to one of those ECM rebuilders covered by other threads.

Gary S Members Profile Send Private Message Find Members Posts Add to Buddy List Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096	Post Options Post Reply Quote Gary S Report Post Thanks(0) Quote Reply Posted: May-23-2018 at 12:11am
	Here is the post from Planetnautique They are the guys that figured out the ECM replacement. Page 8 is the page where someone found someone to rebuild ECM's . The other pages are where you get a Mustang ECM and program a chip to replace the ECM.
	69 Mustang HM SS 95 Nautique Super Sport

Gt40 bugs

About CCF

Donate

Partners

Contact