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Breakdown is I put a 700 in my 05 440 ok.

Will a 05 Carb ECU work with a 04 carb main harness and my 440 servo regulator and condenser and servo motor?

Everything hooks up, sled runs, but my power valves wont open.
 

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Did you jump on AlphaSport and look at the parts breakdown for the year models you wondering about?You could verify that the correct signal is being sent to the servo motor with an AC/DC tester-make sure its getting the correct voltage at the right rpm's-it should cycle once full swing after 2-2300 rpm or so after startup.
 

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Well if all else fails just pull the valve all the way open and ride it.I went riding with some guys that had servo problems the just pulled the cables and zip tied them in the open position and went riding thats been 2 years ago and there still riding that way to this day when theres snow.
 
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