silver1.3

I have gotten the "N" flash about 2-3 months ago. It seemed to clear up a heistation between hi rpm shifts. Now thats its hot and humid when I shift the car propels forward for a split second and then its like the rpms get muffled or the acceration thrust is reduced and makes it feel like its slowing down for a split second the car leaps forward and continues smoothly. Im not sure if this is what it is but its like the timing gets pulled back just after the clutch egages and starts to pull the car hard.

Any suggestions.

I have always used Shell 93 Octane gas.

Gomez

Hmmm, another one with the "Richard Paul Syndrome".......

silver1.3

UUUUHHHHHH, I dont get it. . .

zoom44

i dont thingks so gomez

silver reset your pcm and let us know if it goes away

silver1.3

Im assuming the "gomez" comment is not suppose to be nice

Anyway, to reset I assume you just unplug the battery (just the positive ) and let it sit a while. I'll try a quick search.

Thanks Zoom

HeelnToe

Yea, sucks, huh? Makes me look like I don't know how to shift, lol.

Mine's done that since I bought it a year ago. I'm still on "M" flash though.

I've been playing with my technique lately, just to find a workaround. Oddly, it seems to like being shifted hard/fast, rather than feathering the clutch out. That is, if I shift quick enough to actually chirp the tires when going into 2nd or 3rd, it's fine. But if I hesitate at ALL, such as to try and smooth out the shift, it "bobbles" as I call it... hesitates. Damn annoying for a car that's so smooth in every other aspect.

Edit: Peek at: https://www.rx8club.com/forum/showth...9&page=1&pp=15

zoom44

no gomez' was suggesting you have a problem similar to what richard paul is experiencing.

i was being skeptical about your shifting like what heelntoe says

HeelnToe

Where's the Richard Paul thread? I take it he reported the same problem... but it turned out to be his technique and not the car? I'd be very interested to know that.

Many people seem to be experiencing the "problem," though I'm open to the possibility that it's some oddity with the 8's tranny/clutch feel that causes some people (raises hand) to shift improperly. Though, to be fair, I've been shifting cars for 20 years now without trouble

wedge357

try what zoom44 suggested. Reset your car's computer. Do it both ways: Press and hold the odometer reset button, while holding the button down turn the engine key to "on" (not the accesory only position) and wait until the odometer shows "test". Turn off the car key. Second one is to turn the key to "on" position again then quickly press the brake pedal 20 times in 10 sec. The oil gauge needle should swing back and forth to confirm the procedure. You have now reset all the system in your car. Try it and see if it fixes your problem.

olddragger

iTrader: (3)

I have had that problem before. Acts like it "loaded" up with gas. Clearing the computer, running some carbon flush through and a new set of the "new" plugs cleared mine right up.
olddragger

silver1.3

please save me the trouble of all that pesky searching and enlighten me about "new" plugs :D

I've been doing the ole shift the trasmission for about 20 years too - mostly sports cars and I've never had any trouble - all kinds of cars fwd, rwd, awd high power, low power, rev matching, heel toeing, well you get the point. If this car is so finiky a shifting style it would be disappointing. I don't think its my shift technique b/c the car started doing it recently. Anyway, I'm willing to learn if thats what it takes.

silver1.3

OK, did the "clear the PCM" thing and drove for a day or so and the hesitation is still there. It seems like timing is being pulled, but the weird thing is it does this when its cool outside or hot. You would think if its pulling timing back to stop engine knock then you would experience less or none of this on cool days when engine knock would be less previlant. I guess I'll have to take it to the dealer, but the only flash I don't have is the "P" so I dont know what that would do for me.

olddragger

iTrader: (3)

not your shifting man. the new plugs are of adifferant type. suppose to help starting. They have some grooves in them. the leading ones only.I think it wasnt the style change of the plug that helped mine but the fact they were new. I have 20000 miles on my car and the plugs looked bad. plus the de carboning if you will I think helped. Does your car do this behavior with the dsc off?
olddragger

zoom44

yeah i was going to say now to have your plugs cleaned or replaced.

silver1.3

Well I guess I will try to "decarbon". But I run my car to 9k briefly 2 - 3 times a day. Is there a specific additive like techron?

As for the plugs is there a known part number? I did a brief search but can't seem to pin down any diffinate numbers.

I wondered if it was because my clutch was slipping, but the fact that it pulls hard for a second then the power pulls back and the revs drop with it made me negate that thought. You would think that if the clutched slipped power would fall off but the revs would climb.

AS for DSC. I havn't tried to turn it off. I havn't gotten a blinking light showing me its kicking in, and it happens on 2-3 (as well as 1-2) shifts when there is no chance of wheel spin. Im not overreving and dumping the clutch, Im more like rev matching.

One more thing I have noticed. When the car is still relatively cool (read just warmed up) the hesitation is not there. Thats why I thought it might be pulling the timing (once the car is up to full operating temp.)

wedge357

Like you said redline it a few times a day. If that does not work buy new spark plugs.

silver1.3

Well, I've tried "Techron" additive, redlining it - to no avail. Im not sure plugs would be the solution since it pulls hard to redline and only pulls back the power on upshifts (downshifts seem to be fine).

I wondered if it could be the ports sticking, but Im not sure this makes sense either.

I also wonder if this "R" flash would help. I was under the impression the "P" flash was suppose to stop this hesitation.

RotaryIT

I have this problem intermittently. Sometimes I think it is me, lazy shift/clutch action...and other times I think it's TCS/DSC coming in because of tire spin (But it seems that the tire hasn't happened yet, if you know what I mean) Hard to explain...but those that have experienced it will understand I think. Try driving a couple of runs with DSC off. Not the long press, but just the short one. See if it makes a difference, then try the long press. If course, don't do this in inclement weather, as I would not want to be responsible for someone getting sideways if they are not use to doing so in this car.

I still find no rhyme or reason. It will do it in my car with any of the above circumstances, just not every time. I have P flash, and all stock. I have also had the plugs checked and replaced at P flash, and no change....but definately smooth power and such on P.

slavearm

I have the same problem... its funny, because I was thinking it was my tune, but I have been tuning for awhile, then pulled my tune off (bypass CZ) and it still happens. Think i'll try some plugs when I go into the dealer for all the recall fun.

slavearm

HeelnToe

Just bumping this to see if anyone has found a definitive answer to this problem... where the car consistently hesitates for a second after every high-rpm, wide-open-throttle shift?

You know... off throttle, shift, nail the throttle... and it'll accelerate normally for a moment, then it feels like someone cut the fuel supply in half for a second... then accelerates fine up to the next redline shift. Repeat.

The weird thing is it only happens during ordinary fast shifts. If you reaaaally relax and take your time getting back on the throttle, it's usually fine. And, even more strange... if you shift extremely fast... to the point the tires chirp going into second and third... it doesn't hesitate. But it's murder on the clutch and drivetrain I'm sure.

There are quite a few threads regarding this, all independently started. No one's imagining it, it's not poor shifting technique, it's not the clutch slipping, it's not the TC or DSC. There's definately a problem with SOME cars.

I'm still on M flash. I'm hoping when I get the R with the recall it might fix things. But I fear it's a symptom of a more serious mechanical problem, not a simple CPU bug... since not everyone is experiencing it.

Have any of you had this problem definately solved for sure?

HeelnToe

Just an update on this problem:

I got the "R" flash. Didn't fix the hesitation at all.

But today I finally did the brake-pedal PCU reset trick. I don't know why I didn't try it before, I know people recommended it... just didn't see how it would help. Stupid, stupid me.

And... it's perfect now! Well, at least it was fine for the 20 mile commute home. It feels like a competely different car now.... there's nothing subtle about the difference, it's night & day. God, I didn't think the car could be even MORE fun, lol. I just have to make it a point to reset the PCU every friday or something now, lol. Who said this car was quirky?

But now I'm wondering what the heck difference it could have made? Why would that particular PCU reset fix a hesitation-on-upshifts problem?

zoom44

cleared the fuel trims

HarshJay

Man, I have exactly the same problems with my brand new 05, I have no idea about these flashes, or wut the car came with. But as to the hesitation.. I have exactly the same problem. It picks up, sputters, and picks up again. Went in to the dealar and they told me a solonoid (sp) is failing a test and is on order to be replaced.. but I'm gonna do the brake pedal reset and see if it fixes things for me too. I have just over 3k on it, and just put the summers back on this week..... and man it sure tramlines hard, two hands on the wheel all the time.

HarshJay

It goes in for service tommorow to have a solonoid replaced, and I have told them about the heavy steering pull and asked about all the engine "flash" codes.. I doesn't have the same pick up as it did 3000k ago, when it was brand spankin new.