Volvo S80 A performance sedan that offers top notch luxury, outstanding handling and so much more.

transmission shift issue

Old 10-27-2013, 07:56 AM
Junior Member
Thread Starter
Join Date: Oct 2013
Posts: 2
Default transmission shift issue

I have a 2007 S-80 and have a transmission question. I just bought this used and it has 135k on it. when getting onto the freeway at around 50-60 mph, if I mash down hard the transmission seems like it starts bucking like it can't decide where to shift to. I have also noticed in going down a hill it may hold up into the gear it's it and actually slow down unless I accelerate then it shifts. I am not familiar with any quirks of a six speed trans and have always had Ford or toyotas.
Should I change the fluid? Or is it a software issue? The instruction book says the fluid does not need changing - kinda wierd.
Old 10-29-2013, 10:35 AM
Senior Member
Join Date: Jul 2011
Posts: 194

Hi, if 135 K is miles and the oil never been changed then get ready for transmission change or overhaul.
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