Stepper motor or ACCII unit? - Saab 9000 Bulletin Board - Saabnet.com
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Stepper motor or ACCII unit?
Posted by Marko [Email] (more from Marko) on Sat, 16 Nov 2002 14:35:23
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Hi everybody,
Okay - my symptoms ('92 9kt auto) Only have heat on "HI" setting. Everything else blows cold. The unit is throwing one error after calibration - mechanic says it is the air-mixing flap stepper motor.
I just pulled the glove box off and watched the mixing stepper arm move. It DOES move - but pretty much only over its full cycle. By switching between "HI" and "82" before it moved all the way I found a way to make it pause. But then it would gradually, in small steps, move all the way back to cold.
SO.. Is this stepper motor bad? If it is not, then I am left with the conclusion that it is the ACCII unit itself. The cabin air temp sensor is spinning nice and smooth, and the resistance reads correctly.
Thoughts, opinions? I've heard that when these motors go bad they just go BAD - i.e. they don't move at all. Mine definitely does move.
Thanks in advance,
Marko
posted by 63.48.144...
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