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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
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06-30-2015, 05:03 PM | #1 |
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Automatic transmission problem
Okay first of all the car has a Sprintex stage two on and then normal headers with de-cat and then just a normal cat-back exhaust.It has a stage 2 flash from delicous tuning and we have swapped 3 diffrent tunes so we know it is not the tunes.
Now the problem is when i give it the beans,the car seems to select the next gear but doesn't engage it almost like a manual has it's clutch in and revving it. [ame]http://youtu.be/Z5fGqvOrmjY[/ame] |
06-30-2015, 05:32 PM | #2 |
Thats pretty neat
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Stock trans? Looks like its got clutch slippage.
Edit: never mind, im clueless......if it was clutches slipping your rpm would still go up......yours seems to get stuck.....perhaps torque converter is locking? Last edited by WHITE; 06-30-2015 at 05:42 PM. |
06-30-2015, 05:48 PM | #3 |
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Agreed. High torque loads on the clutch will cause this. That's why the invented sport clutches.
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07-01-2015, 04:49 PM | #4 |
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1. Check your fluid level
2. Does it do it cold or hot or both? 3. Does it do it in manual or auto mode or both? If it's engaging the next gear but slow to "take up" it's probably a clutch/plate issue in the oil pump or a sticky solenoid in the valve body. I'm guessing but that's where I'd start. |
07-01-2015, 08:53 PM | #5 | |
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07-01-2015, 08:58 PM | #6 |
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I called that symptom, "all-gears mode" when I had my turbo. It seems to only happen under boost. I couldn't shift up or down with the paddles or the floor shift until I let off the gas. This is why I signed up for the Phantom. The boost is only temporary, and it's much lower. I think the transmission has some kind of torque limiter in the shift controller. That's just the kind of thing that makes me want to crack the code and reprogram it.
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07-01-2015, 09:06 PM | #7 |
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Kris @SSP has been seeing a lot of A/T failures lately under boost. The bad part is that some of the failing parts aren't available anywhere but from a donor tranny. I have his stage 2 valve body and cooler installed. The clutch plate kit is sitting here ready for when those start to slip. I would ping Kris to see if he has any ideas.
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07-03-2015, 02:06 AM | #8 | |
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07-03-2015, 08:43 AM | #9 | |
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I've got FI AT also and it just doesn't shift as fast as we'd all like I bet. In manual mode, shifting a little sooner and I avoid it. In Auto mode the ECU doesn't make the same mistakes I do when up-shifting. Styx, You see the same thing when in 'D' ? ---------------------- “The thing is, it’s a gearbox, okay? It has one job to do! One job! Pull the lever… ‘Am I a pencil? Am I a cauliflower? Am I a nuclear power station – I’m a gearbox! Oh, heavens, I’m gonna swap some cogs around!’” ---------------------- Last edited by onzippy; 07-03-2015 at 08:48 AM. Reason: Add something funny. |
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The Following User Says Thank You to onzippy For This Useful Post: | Cole (10-17-2015) |
07-03-2015, 11:47 AM | #10 | |
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07-03-2015, 01:32 PM | #11 |
Thats pretty neat
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I wish I could drive the car to see what it feels like its doing. I really think its something torque converter related though. Just seems from the video that when you shift gear it wants to accelerate but its being loaded down by something cuasing rpm to remain stationary, but then when you lift and re apply throttle the load goes away and it accelerates like normal then.
This is just from what I'm seeing and hearing though, its hard to give definite diagnoses over the internet. Do you have any way to log or visual see what's going on via a tablet or something? |
07-03-2015, 01:39 PM | #12 | |
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Just trying to get idea if it's only high RPM and WOT = slip. I dyno'd 250whp on 93 but now with e85 and cranked up boost I don't even know how much power's there but I haven't had any problems except kissing the rev limiter like I said. knock wood.. |
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07-04-2015, 02:18 AM | #13 | |
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07-04-2015, 02:20 AM | #14 | |
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