tranny 5->4 abrupt downshifts - Saab 9-5 Bulletin Board - Saabnet.com
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tranny 5->4 abrupt downshifts
Posted by steve (more from steve) on Wed, 1 Nov 2006 11:53:48
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03 Aero. I have had transmission jerkiness at about 70mph under certain conditions. I have had this since new and all the dealer’s software upgrades have done nothing to fix this. I was driving the other day and observed some info I thought might help me get to the bottom of this. I notice this most in hilly terrain. The downshift to 4 seems to be triggered by some sensor detecting something (hard braking, aggressive cornering at hill crest, etc.). I can’t tell if this shift is being done to enhance the power on tap or as some sort of forced engine braking. The shift is fairly jerky and inconsistent. It doesn’t happen if the car is being driven gently or if it is manually placed in 5. Shift feels like the seat/car is dropping out from under me. Any ideas?
posted by 69.113.1...
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