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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
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01-04-2019, 06:13 AM | #15 |
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Hello Pat,
Did you manage to find your problem ? Could you tell me if your feeling with your car is comparable to this old video ? [ame="https://www.youtube.com/watch?v=Ddl4nDEzQOM"]https://www.youtube.com/watch?v=Ddl4nDEzQOM[/ame] |
01-04-2019, 10:58 AM | #16 |
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Hey B.Pod, thanks for checking in with me. I did not manage to find the problem yet. That said, I haven't experienced the problem since soon after I last posted. I had a friend log it while I was driving, but I could not get the car to stumble as it had previously. I wonder if it has anything to do with the cooler temperatures here now.
Some people here think it is an issue with my coilpack(s). If that were the case, might the problem go away when ambient or intake temperatures are colder? The video posted above is similar, or maybe the same, type of behavior I have seen in my car. That said, I see it in all gears, not just first. And not just at full throttle. |
01-04-2019, 12:57 PM | #17 | |
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Quote:
Regarding the bolded text, does it look like this? [ame]https://www.youtube.com/watch?v=3AU035Pvkp0[/ame] 6th gear at 62mph sounds like really low RPMs on either MT and AT gearing. If I suddenly floor it at low RPMs (sub 2.5k) my car almost "shudders" and the tachometer "jolts" around briefly but only at the initial moment of acceleration, not later on like in the video. |
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01-04-2019, 02:29 PM | #18 |
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It is not happen just when gently opening the throttle. It can happen at any open throttle position. It never happens when closing the throttle. Only right when I open it some amount.
Yes, my car look like what happens in that video. |
01-04-2019, 05:42 PM | #19 |
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Check out this thread, then. http://www.ft86club.com/forums/showthread.php?t=66620
Sounds like a DI failure? |
01-04-2019, 08:15 PM | #21 |
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Seems so minor. I wouldn't worry about it. Check all intake hose clamps and clean maf sensor.
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01-04-2019, 08:30 PM | #22 | |
extra what?
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Quote:
Do you know how to https://datazap.me/ ?
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01-04-2019, 08:38 PM | #23 |
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Thanks, Ultramaroon. I know nothing about logging data. @fika84 did it for me. Maybe he can chime in here.
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01-04-2019, 10:43 PM | #24 |
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Transient ignition retard is aggressive in the stock ECU and OFT OTS. I think throttle tip in might be able to trigger it despite enrichment, not sure though.
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01-04-2019, 11:14 PM | #25 | |
extra what?
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Quote:
It would be interesting to see if something is operating in a borderline manner. Worth a shot.
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01-06-2019, 10:01 AM | #26 |
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A log of fuel trims would be helpful
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01-06-2019, 10:51 AM | #27 |
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perhaps some bad gas that has gone ???
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The Following User Says Thank You to 22R For This Useful Post: | Lantanafrs2 (01-06-2019) |
01-06-2019, 11:18 AM | #28 |
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