Update on my 3rd to 4th flare
You know what ive noticed? Its still the norm, where I can be on a flat road and with light throttle and shifting at 2500rpms, it'll flare 100-200rpms going from 3rd to 4th. WHEN trans and ATF is hot. been like this for over a year now.

But now I found out (and I didnt know this) it doesnt matter what speed im going at when shifting into 4th or if im going up a hill, itll flare each time if I let it shift between 2000 and 3000rpms.

I can be going up a hill or slight hill in 3rd in D and i apply more gas but if i let it shift between 2000 and 3000rpms it will still flare and flare bit worse like 400rpms. Im guessing the extra flare has to do with the extra throttle and line pressure in the trans?

I have accustomed my driving so that if Im in drive in 3rd and shifting to 4th, I throttle it so that I shift over 3000rpms and no flare.

I guess this is why the other day i happened to be in D in 3rd and didnt realize I was about to shift to 4th at about 2800rpms, and as I was watching the tach, got like a 400rpm flare. I was like HOLY ****!!!! Was really worried about the extra flare (400 vs 150-200). Im guessing its from the extra throttle? I thoght it was only on flat roads but guess not.

 

The only way to avoid the flare in OD going into 4th is to shift around the 2000-3000rpm range. So either let off and let rpms drop (but this became too much of a pain in the [censored] before) or throttle it so i hit at least 3000rpms and then it shifts no flare each time.

I just came back from testing some more. I really wish I got the other day on tape cause im not sure if the 400rpm flare im possibly exxagerating. Good chance it was only 200rpm like it usually is. But I tried going on the same roads that had the flares on and couldnt get it to happen again.

This is what i notice k. If the car is in OD for longer than 4-5secs after its been shifted from D3, then it will flare each time in the 2000-3000rpm range going into 4th. when I shift from D3 in 3rd to OD for 4th at the min. speed limit allowed for it to shift right away (which is 60kmh on my car), so once I hit 60kmh I shift to OD, it shifts right away with light throttle and no flare. Even medium throttle (around 2700rpms) it wil shift with no flare.

Now this is the ONLY time where i would actually allow it to stay in OD for longer than 4-5secs and its not intentional. if I do heavier throttle (around 2800rpms) and shift from D3 to OD when I hit 60kmh and say it stays in OD for 4-5 secs or longer before it shifts to 4th between 2000-3000rpms then it will flare. Because with heavier throttle, it wont shift to 4th til bit later cause the shift point changes so it stays in OD for few secs longer than usually would.

LEt me know what you think. This has to mean something. So thats why its very critical of me having to throttle past 3000rpms when im about to shift into 4th in OD. Like merging.