09-04-2019, 08:31 PM | #1 |
Drives: ZL1 1LE A10 Join Date: Mar 2015
Location: CA
Posts: 1,093
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A10 3 to 4 shift struggling
I have a 2019 ZL1 1LE A10, I often drive in manual mode (probably 3/4 the time) and I've noticed the car is beginning to strain when shifting from 3rd to 4th under all load conditions, especially noticeable when not driving hard. It happens every time but only 3 to 4.
By strain I mean, it takes longer and a slight whine builds up just before the shift. Anyone else experience this? Thanks **Update** 10/17/2019
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Current: 2019 ZL1 1LE A10 Mods: MPS4s Tires | Borla Atak | CF Steering Wheel Previous: 2018 ZL1 1LE M6 | 2017 Z06 Z07 M7 | 2017 GS A8 | 2015 ZL1 M6 | 2013 GT500 Last edited by angryBits; 10-17-2019 at 03:20 PM. |
09-04-2019, 09:04 PM | #2 |
Drives: 2018 ZL1 A10, 2019 BMW X5 Join Date: Dec 2016
Location: Roseville, CA
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I’ve had issues going from 4th to 3rd in manual mode. I’d say about 30% of the time the car doesn’t rev match for some reason and causes a very violent jerk. Every other gear works great. No issues upshifting in any gear.
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2018 Nightfall Gray Metallic Camaro ZL1 - A10
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09-04-2019, 09:47 PM | #3 |
Drives: 20 X3M CP & 19 ZL1 1LE A10 Join Date: Jun 2013
Location: Brenham, TX
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I noticed if you give it more gas on the upshift around it will responds quicker. Not PSA roll quicker but quicker.
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09-04-2019, 10:04 PM | #4 | ||
Drives: ZL1 1LE A10 Join Date: Mar 2015
Location: CA
Posts: 1,093
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Quote:
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Unfortunately my "straining" is unaffected by this trick. I'll try to get a PDR video, hopefully the recorder will pick up the sound.
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Current: 2019 ZL1 1LE A10 Mods: MPS4s Tires | Borla Atak | CF Steering Wheel Previous: 2018 ZL1 1LE M6 | 2017 Z06 Z07 M7 | 2017 GS A8 | 2015 ZL1 M6 | 2013 GT500 |
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09-04-2019, 10:09 PM | #5 |
Drives: 22' Porsche PDK GT4 Join Date: Mar 2018
Location: Bay Area
Posts: 2,013
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This is why I will never own an auto in a performance car unless it is a dual clutch.
Slush boxes have come a long way, but you still already hear about weird behavior with them and they are never as crisp/snappy as a dual clutch, especially on the down shift and lag time of the paddles.
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22' Porsche PDK GT4 (MCS 2-way remote dampers) Previous: 18' NFG 2SS 1LE (ZL1 1LE solid rear cradle bushings & Corsa Exhaust) 16' F80 M3 (Ohlin R/T Coilovers) 13' Audi TTRS (APR Stage 1, MSS Springs) 09' C6 Z06 08' E90 M3 06' 335i (KW V2 Coilovers) 03' C5 Z06 |
09-04-2019, 10:40 PM | #6 |
Drives: 2017 ZL1 A10 Summit White Join Date: Apr 2018
Location: Cumming, Georgia
Posts: 511
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I've never had lag or slow shifts on upshifts. Works great for me and I find the shifting to be very fast. I always drive in manual mode. Yes, there is an occasional jerk on the 4 to 3 shift but this can be eliminated by either keeping the revs high or low. The stutter usually only occurs in the middle rpm range.
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09-04-2019, 10:49 PM | #7 | |
Drives: 2012 Porsche 911 Turbo S Join Date: Jan 2017
Location: Los Angeles, CA
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Quote:
and no, i haven't had that issue, but i very rarely use the paddles.
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09-04-2019, 11:34 PM | #8 | |
Drives: 22' Porsche PDK GT4 Join Date: Mar 2018
Location: Bay Area
Posts: 2,013
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Quote:
I agree upshifts are just as quick as a DCT, but not downshifts and the latency issue is not there in a DCT since the gear is already selected and it just needs to engage the other COG.
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Current:
22' Porsche PDK GT4 (MCS 2-way remote dampers) Previous: 18' NFG 2SS 1LE (ZL1 1LE solid rear cradle bushings & Corsa Exhaust) 16' F80 M3 (Ohlin R/T Coilovers) 13' Audi TTRS (APR Stage 1, MSS Springs) 09' C6 Z06 08' E90 M3 06' 335i (KW V2 Coilovers) 03' C5 Z06 |
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09-05-2019, 07:57 AM | #9 |
Drives: 20 X3M CP & 19 ZL1 1LE A10 Join Date: Jun 2013
Location: Brenham, TX
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I’m talking bsing around town. Not WOT highway roll runs. PSA ain’t no joke.
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09-05-2019, 08:18 AM | #10 | |
Drives: SEARCHING Join Date: Apr 2010
Location: Delaware
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09-05-2019, 09:39 AM | #11 |
Drives: 2019 ZL1 Crush Join Date: Jan 2019
Location: Colorado Springs
Posts: 564
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No issues from me, sounds like a trip to the dealer is in order
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09-05-2019, 12:28 PM | #12 |
Drives: A10 LT4 Join Date: Aug 2016
Location: Deep South TX
Posts: 1,094
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The 3-4 & 4-3 has been a repeated topic here ever since the 17's came out...mine has settled down compared to when I first got it, but still shows itself from time to time. More noticeable when the trans isn't up to operating temps.
It isn't bad & you do sorta learn throttle control to minimize...seems to act a little different in the varying driving modes. |
09-05-2019, 03:57 PM | #13 | |
Thank you Al Oppenheiser!
Drives: Red Hot A10 ZL1 Convertible Join Date: Jun 2017
Location: Sarasota, FL
Posts: 4,973
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At least it's not as bad as the manual rev match bug that tries to kill people.
Quote:
The Trans shifts a bit too quick during some 4-3 shifts, before the revs have risen to the correct/matched RPM. Then it keeps revving to the match, bucking the car. Kinda like when you first learned to drive a manual and bucked the car, only 10x faster and not as visibly embarrassing I can make mine do the rough 4-3 at part throttle & low-to-mid on the tach. |
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09-05-2019, 04:01 PM | #14 | |
Drives: 2012 Porsche 911 Turbo S Join Date: Jan 2017
Location: Los Angeles, CA
Posts: 1,776
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Quote:
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-- Current -- 2012 Porsche Turbo S - PDK - Basalt Black Metallic -- Past -- 2017 Camaro ZL1 Coupe - Red Hot - A10, PDR - HRE P101 2015 Mustang GT PP - Whipple Supercharger |
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