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Old 12-06-2012, 04:00 PM   #3
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Join Date: Dec 2012
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Location: Wausau, WI
What I Drive: 2005 Black ZX4

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Originally Posted by elsolo View Post
Well, these transmissions are completely controlled by solenoids.

It could be one of the solenoids, the wiring that connects that solenoid to the computer that controls it, or an internal mechanical problem.

Do you know which solenoid(s) were replaced, what the trouble code(s) were?

Looking at the solenoid engagement chart, the only one that changes state during the 1-2 upshift is "shift solenoid D" which goes to full-open.
(if the cart is left in "D", manually upshifting involved solenoids A, B as well) .
I believe it was p0706. The car was in D when this happened. I believe I did try manually shifting from 1 to 2 and had the same problem.
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