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cdcarve
05-26-2011, 08:04 AM
Hey All

I have an '06 X9 MCX with Mastercraft Cruise. I have an intermittent problem that seems to be in the speedo, cruise, and throttle by wire systems. Sometimes my speedo will read zero when at speed and the engine runs fine. Other times the speedo will peg at the upper limit-When this happens the engine will idle high(1500rpm) or if at speed will lose power. If I put the tranny in neutral and rev the engine the speedo will respond to engine speed. I'm thinking either a bad ground or speed sending unit or computer. Any thoughts? Anyone ever had this happen?

Thanks
Corey

onejdgreen
05-26-2011, 08:15 AM
First thing to always check is the ground... Can cause some weird sh!t to happen. With all of the electronics on boats it could be corrosion on a plug, wire not spark, that is causing it. Just my 2 cents...

FourFourty
05-26-2011, 10:54 AM
Def sounds like a loose/corroded ground connection to me.....

cdcarve
05-27-2011, 07:41 AM
Thanks for the replies - I'll be looking into it this weekend.

Have a great Memorial Day