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05-21-2015, 12:21 PM | #1 |
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AT downshift issue
Hi first issue post,
Occasionally when going into manual mode and then going for a downshift the transmission doesn't rev match it lurches a bit then downshifts into the correct gear and the engine slowly revs up. Also in the same tense it will lurch in the upshift. This issue continues until I restart the car at which point the problem completely disappears
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05-21-2015, 08:15 PM | #2 | |
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05-21-2015, 08:48 PM | #3 |
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I've experienced the same issue, probably three times since owning the car for a year. Harsh upshifts and laggy/non rev match downshifts. Restarting the car does make it go away, the other solution was to put in back in "D" and drive for a few miles.
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05-22-2015, 08:37 AM | #4 |
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Hmm. I don't think I've ever experienced a laggy or non-rev matched downshift in my automatic, but I can definitely can speak on harsh upshifts, especially 1st-->2nd. My car, at least until its fully warmed, has always been kinda harsh from 1st-->2nd.
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05-22-2015, 08:45 AM | #5 |
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Always happens to me after the car is warm. No way to fix except turn it off and let it cool down
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05-22-2015, 09:16 AM | #6 |
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I have these types of issues, but it is always so intermittent it is hard to actually replicate and understand.
My feeling is that perhaps I will get a tranny flush (been on the OEM fluid, never changed and now at 56000 km) and maybe that will rectify it |
05-22-2015, 09:49 AM | #7 | |
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Not sure if it's a fluid issue though, it's happened to me since the break in period. And I have less than 9000km on my car. |
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05-22-2015, 10:53 AM | #8 |
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Interesting discussion. I've got over 61,000miles on mine probably about 25% driven in manual, and almost every trip with some paddle action, and have not experienced this.
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05-23-2015, 11:28 AM | #9 |
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Its very specific and hard to describe, I could flog the car for an entire drive and not have any issues and the car runs perfectly. But then the next day after driving normally and switching to manual it would behave this way and its only happened twice. I'm not sure where its stemming from but it seems like some sort of software bug?
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05-23-2015, 11:30 AM | #10 | |||||
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05-23-2015, 02:21 PM | #11 | |
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05-23-2015, 04:42 PM | #12 | |
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This oil change I'll bring it up, notice the wheels sqeak when the downshift happens I hope nothing is locking up and its just the sudden deceleration
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05-23-2015, 05:28 PM | #13 |
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The wheels squeak on me when the issue happens as well
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05-23-2015, 07:24 PM | #14 |
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Hmmm I've never felt that after 57000 km
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