Engine RPM "Hiccup"/Hesitation during initial acceleration - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

NCtoBRZ · 10-21-2018, 08:45 PM

Based on all of the replies, the problem is that you bought an automatic when the twins clearly prefer to be manual. Take it back to the dealership and see if they’ll swap the correct transmission into the car. Just kidding... but seriously, it’s under warranty, let the dealership work on it.

guybo · 10-23-2018, 06:08 AM

keep it in manual mode and rev the piss out of it. Never let it under 3k RPM. The best cure for the torque dip (that does not include re-tuning or modding) is to never let the car run in the torque dip RPM range.

csol · 12-02-2018, 09:15 PM

Exact same problem I'm having..

kishi23 · 11-14-2019, 06:37 AM

95% clearly for me is Direct Injector issue, happens and experienced the same issues and hiccup.

kev0 · 11-14-2019, 07:22 AM

Quote:

Originally Posted by kishi23

95% clearly for me is Direct Injector issue, happens and experienced the same issues and hiccup.

Any other symptoms? Did you get any codes? Did you replace the seals or the injectors itself?

entaroadum · 12-22-2019, 07:56 PM

I'm interested in this. I've had this behavior too, especially when going uphill in 2nd gear between 2k and 2.5k rpm
Is there a method to confirm it's indeed related to DI? and which one is the problematic one, it would suck having to replace all 4 of them at $170 each.

kishi23 · 12-28-2019, 01:47 AM

Quote:

Originally Posted by kev0

Any other symptoms? Did you get any codes? Did you replace the seals or the injectors itself?

No Check Engine Lights, You just feel your car under powered and hesitating on the range of 2500~3500 RPM.

Glad 2 months before warranty expired I noticed and fix the issue.

kishi23 · 12-28-2019, 01:48 AM

Quote:

Originally Posted by entaroadum

I'm interested in this. I've had this behavior too, especially when going uphill in 2nd gear between 2k and 2.5k rpm
Is there a method to confirm it's indeed related to DI? and which one is the problematic one, it would suck having to replace all 4 of them at $170 each.

It might be spark plugs. When was the last time you change your plugs?

entaroadum · 12-28-2019, 09:48 PM

Quote:

Originally Posted by kishi23

It might be spark plugs. When was the last time you change your plugs?

about 5k miles ago. BTW it had the same behavior before and after the change.

11-14-2019, 06:37 AM	#18
kishi23 Member Join Date: Dec 2018 Drives: TOYOTA GT86 2014 Location: Dubai Posts: 15 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	95% Direct Injectors 95% clearly for me is Direct Injector issue, happens and experienced the same issues and hiccup.

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10-21-2018, 08:45 PM	#15
NCtoBRZ Senior Member Join Date: Nov 2017 Drives: 2017 Subaru BRZ PP WRB Location: Gulf Coast Posts: 383 Thanks: 71 Thanked 206 Times in 128 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Based on all of the replies, the problem is that you bought an automatic when the twins clearly prefer to be manual. Take it back to the dealership and see if they’ll swap the correct transmission into the car. Just kidding... but seriously, it’s under warranty, let the dealership work on it.

10-23-2018, 06:08 AM	#16
guybo Huge E85 fan! Join Date: May 2016 Drives: 2016 Scion FRS Location: Tampa, FL, USA Posts: 1,850 Thanks: 539 Thanked 1,010 Times in 605 Posts Mentioned: 32 Post(s) Tagged: 0 Thread(s)	keep it in manual mode and rev the piss out of it. Never let it under 3k RPM. The best cure for the torque dip (that does not include re-tuning or modding) is to never let the car run in the torque dip RPM range.

12-22-2019, 07:56 PM	#20
entaroadum Member Join Date: Mar 2019 Drives: 2013 Subaru BRZ Location: Panama Posts: 25 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I'm interested in this. I've had this behavior too, especially when going uphill in 2nd gear between 2k and 2.5k rpm Is there a method to confirm it's indeed related to DI? and which one is the problematic one, it would suck having to replace all 4 of them at $170 each.

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