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Solid alarm on my 496 mags
once I get a little over 3/4 to wot I get a solid alarm until I back all the way off throttle....once backed off and still in gear alarm goes off and I can get rite back in it...once I get back to 3/4 to wot alarm goes back off........just changed impellers, thermostats, and unplugged drive oil bottles and alarm still sounded....have motors scanned this evening and only codes that showed up were erelivant to issues......any help would be greatly appreciated |
Always best to give your motor serial number so we know what you have. If you have the in gear switch on the shift plate (item 20) disconnect it and see if it stops
Genuine Mercury & Mercruiser parts. Shift Bracket, Mechanical Shift (0W029411 and Up) |
I will get serial #’s when I get home this evening |
You are in gaurdian mode. Hence the alarm when a certain rpm is exceeded. What does the Fault history and Fault sec show? What available power? What is your block water psi when alarm occurs? New impeller in original water pump housing? The fault is there, you just need to find it.
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Originally Posted by Imawelder
(Post 4639602)
once I get a little over 3/4 to wot I get a solid alarm until I back all the way off throttle....once backed off and still in gear alarm goes off and I can get rite back in it...once I get back to 3/4 to wot alarm goes back off........just changed impellers, thermostats, and unplugged drive oil bottles and alarm still sounded....have motors scanned this evening and only codes that showed up were erelivant to issues......any help would be greatly appreciated Member BUP will get you straight....John lives and breathes the 496 platform. |
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