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Old 04-25-2021, 08:03 PM
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Theclarks1111 Theclarks1111 is offline
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06 X30 Mcx Gsa

Has anyone experienced a boat go into "protection mode" and throw codes because they had too much weight in the boat with PP running?

The following are the codes I get:

M81 not tracking- active TAC malf
M81-TAC (TACMALF) - active

I have replaced the PPS, the TAC module, the throttle body assembly, and the entire PP system. I am also running a 15x13 OJ prop.

Everything runs perfect in all conditions until the boat is weighted heavy.

I have been fighting with this for a year now and ready to throw in the towel.
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Old 04-25-2021, 11:01 PM
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neil.anderson63 neil.anderson63 is offline
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Have you checked or replaced plugs, wires, distributor cap?
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Old 04-26-2021, 08:58 AM
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Theclarks1111 Theclarks1111 is offline
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Yeah, they were replace 100 hours ago. Thanks for the suggestion.
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Old 04-26-2021, 08:26 PM
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gwozhog gwozhog is offline
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My 05 mcx was doing the same thing. I changed the map sensor, temp sensor,knock sensor, plugs, wires and distributor and rotor and problem solved. If I had to guess though it was the map sensor. It was gummed up a bit.
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Old 04-26-2021, 08:28 PM
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gwozhog gwozhog is offline
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Please follow up if you fix it
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Old 04-26-2021, 09:15 PM
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Theclarks1111 Theclarks1111 is offline
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Great thanks for the suggestion!
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  #7  
Old 07-11-2021, 10:17 PM
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Theclarks1111 Theclarks1111 is offline
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Quote:
Originally Posted by gwozhog View Post
Please follow up if you fix it
Still no luck getting this figured out.

Problem is, the two codes I am getting do not have any troubleshooting steps. And still only happens when perfect pass is engaged.
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Old 07-11-2021, 10:21 PM
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Theclarks1111 Theclarks1111 is offline
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Quote:
Originally Posted by gwozhog View Post
My 05 mcx was doing the same thing. I changed the map sensor, temp sensor,knock sensor, plugs, wires and distributor and rotor and problem solved. If I had to guess though it was the map sensor. It was gummed up a bit.
I have replaced everything too, and still persists.

The DTC troubleshooting for the codes I am getting only say that there is a disagreement between "commanded throttle" and "actual throttle". I have monitored it while underway when the codes are thrown and cannot see an issue with values presented for either. The boat is also not working too hard. Throttle plate is running around 48%
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Old 07-11-2021, 10:26 PM
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gwozhog gwozhog is offline
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When is the last time you cleaned your K&N air filter. Might want to look at that if it’s dirty. Take it off and hold it up to the sky and you should see light coming through it.
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  #10  
Old 07-11-2021, 10:33 PM
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Theclarks1111 Theclarks1111 is offline
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Quote:
Originally Posted by gwozhog View Post
When is the last time you cleaned your K&N air filter. Might want to look at that if itís dirty. Take it off and hold it up to the sky and you should see light coming through it.

Yes I clean it regularly. Thanks for the suggestion, appreciate it. Anything else??! Iím open to anything!!


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