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12-02-2021
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CrawlerStar
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Join Date: Aug 2018
Location: Ocean Grove, Vic.
Posts: 343 What Jeep do I drive?: None
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Liked 106 Times in 76 Posts
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Auto downchange 5th-4th. Harsh?
2015 V6 Petrol - Hi all. It’s probably just a me thing, but I’ve been noticing what I describe as a harsh downchange from 5th to 4th when I’m slowing down at traffic lights etc. It feels a bit like when you change down in a manual a bit early, and you get that quick slowing down feel (I know, very badly described). Any ideas, any similar experiences, or just a me thing?
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2015 WK2 Jeep Grand Cherokee Laredo V6 Petrol.
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12-02-2021
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Full Flexer
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Join Date: Apr 2020
Location: Townsville NQ
Posts: 1,099 What Jeep do I drive?: TJ
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Is it at the same time you are braking? It’s probably just the transmission ecu doing it’s thing.
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Jeep TJ rebuilt 4.0L, Custom Steel Roof Racks, vintage ((Jeep specific)) 15” Centerline Hellcats,
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12-02-2021
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CrawlerStar
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Join Date: Aug 2018
Location: Ocean Grove, Vic.
Posts: 343 What Jeep do I drive?: None
Likes: 538
Liked 106 Times in 76 Posts
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Quote:
Originally Posted by Fishframe
Is it at the same time you are braking? It’s probably just the transmission ecu doing it’s thing.
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Any slowing down, whether using brakes or just rolling to a stop. But it doesn’t do it all of the time.
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2015 WK2 Jeep Grand Cherokee Laredo V6 Petrol.
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12-02-2021
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Established Member
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Join Date: Jul 2015
Location: Adelaide
Posts: 2,081 What Jeep do I drive?: WK2
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Mine started to do this for a while after the Simmo, my guessing is 600 k's of slow going have the ecu some funny ideas about my driving habits, it was most noticeable in carparks. After a battery disconnect a few weeks back, she's back to normal.
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I drive over stuff!!!!
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12-02-2021
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CrawlerStar
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Join Date: Aug 2018
Location: Ocean Grove, Vic.
Posts: 343 What Jeep do I drive?: None
Likes: 538
Liked 106 Times in 76 Posts
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Quote:
Originally Posted by Grippy
Mine started to do this for a while after the Simmo, my guessing is 600 k's of slow going have the ecu some funny ideas about my driving habits, it was most noticeable in carparks. After a battery disconnect a few weeks back, she's back to normal.
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How long did you have it disconnected for?
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2015 WK2 Jeep Grand Cherokee Laredo V6 Petrol.
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12-02-2021
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Established Member
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Join Date: Dec 2018
Posts: 228 What Jeep do I drive?: WJ
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5 minutes should be heaps, 10 to 15 would be better
Sent from my SM-A705YN using Tapatalk
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2011 GRAND CHEROKEE OVERLAND 5.7LT
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12-02-2021
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CrawlerStar
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Join Date: Aug 2018
Location: Ocean Grove, Vic.
Posts: 343 What Jeep do I drive?: None
Likes: 538
Liked 106 Times in 76 Posts
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I’ve just done some reading and a few Yanks were saying to put in a new fuse in the fuse box in regards to the transmission. Head scratcher that one. And some where saying that it’s getting used to my driving style. It wasn’t there when I bought it, and I was fanging it a bit, but recently I’ve been pretty easy on her. Who knows.
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2015 WK2 Jeep Grand Cherokee Laredo V6 Petrol.
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