supraru

Anyone else have this issue? I don't really floor my car all that much but there are times I'll rip it from second into third on a long on ramp home that merges with the highway. I'll use the paddle shifters (haven't really floored it in normal drive like this) to shift from second into third. Everything pulls great until it gets to 5500rpm. It's a very noticeable hesitation and even seems like it drops revs while still floored and then continues on its way. I guess I could probably try to get it on video after work today but I'm sure the trolls will comment about speeding. Anyway every other gear has no issue at all.

I haven't changed the fluid since I purchased it almost a year ago and the car now has 78k on it. I'm going to flush it and see what happens but I was curious if this is a common issue with the type s or not. I would also wonder if there is a pressure switch issue but it's already in gear when the issue happens. I appreciate any help. I can live with it since I don't really beat on it to begin with but I'm curious as to what the issue could be.

erg69

Sounds more like the vtec, pretty sure it kicks in around that RPM. Its driven off your oil pressure. Have you checked your oil level lately? There is a Bunny hopping around here that is very knowledgeable with this subject.

supraru

Yeah the oil is full. I don't generally loose very much oil between changes. Typically change my oil every 4-5k with synthetic. It even does it with brand new oil.

It's not v-tech switching over. It will hit 5500rpms and literally bog back maybe to 5300 or 5400rpm's then keep going. It's very weird. Keep in mind I'm a mechanic but for Subaru's. Just was hoping there was some other people with the fix.

justnspace

iTrader: (1)

Every gear at 5500 RPM?

supraru

Doesn't happen in first or second. Not sure if it does it in 4th or 5th since I don't normally go that fast in this car. It's also happened during the winter and summer at various temps. I'll take a vid of it later tonight.

st_dot

I have a similar issue. Only happens in 3rd gear in SS mode. Strange thing is if i slap it back to "D" the problem goes away and revs normally throughout the entire range. I've tried to replicate the problem when not in SS mode, but it's non-existent.

supraru

So I was slightly off its maybe around 5700 rpms. If that link doesn't work let me know.

http://youtu.be/1HRL_YAJuA4

truonghthe

During ss mode is your gear indicator blinking? If yes then its your at range switches is on the way out.

supraru

No it doesn't blink.

justnspace

iTrader: (1)

that is odd!
like it almost stuttered

supraru

I'll try the trans flush and see what happens. I need to do it anyway. Other then that car is perfect.

st_dot

I've done the pressure switches and 3x3 since ownership of my car and this hasn't worked for me. The drain and refill did however alleviate the low rpm bucking that was occurring when upshifting to 3rd.
I just assume is something with the ecu and without hondata (or similar) there's no way to find out exactly what's happening.

supraru

I don't have any bucking issues. Only this issue.

truonghthe

Lets try the basic first like reset the ecu so your drive by wire go back to learn mode again.

supraru

Yeah I can try that. its worth giving it a shot and cost nothing.

rubenders

it happen to me when I was doing a datalog for vittuned the engine is on vtec but the ecu close the tb for some reason

Slpr04UA6

^nice video!


Any fix for this problem?


I don't have the issue, but interested like OP.

rubenders

After that datalog i found this on my atlp v2 jpipe send it off for repairs to helltoe a month ago i get it back this friday coming up hope thats the problem

st_dot

Just thought I'd share this as it may have been part of my problem. Over the weekend, I completed the 105k service and was surprised when I pulled the plug from the #1 cylinder. I've ripped on it through all the gears since completing the service and haven't had the issue yet. I'm surprised a loose plug didn't throw a cel or any noticeable issues. Just glad I caught this before it did any significant damage....

supraru

Unhooked my battery and cleaned my throttle body. No changes. Also found out it definitely doesn't do it in auto mode. My plugs are new within the last 4 months. I gotta get some things from the Honda dealer so I'll have the parts guy get me some trans fluid so I can do a flush. If that doesn't improve anything guess I'll just live with it.

With auto trans Subaru's we're able to do a relearn with our computers. Anyone know if Acura has the same kind of thing?

Slpr04UA6

^yes. Copied from the thread below. Post #17

https://acurazine.com/forums/third-g...-happy-747662/




Quote:

"I got this from another forum and it works for a lot of people including me.

The Throttle is "Drive By Wire" and adapts to your particular driving
style. Do a TBA Throttle body adaptation.

1. Get in your car, it doesn't matter if you close the door or not.

2. Turn the key to the on (not start) position, the position just before the starter
turns over.

3. Press the gas pedal to the floor with the key in the "on" position.

4. Hold the pedal to the floor for five seconds, then turn the key back
to the "off" position (don't remove the key), then release the gas
pedal.

5. Wait 2 mins. for a full alignment.

6. Drive the car as you always do.

Depending on your driving style, this may or may not be a big factor. I do a lot of city driving so
I noticed a big change after erasing my history. It is not hard to do this, just follow the instructions -

Key on, pedal down, 5 sec, key off pedal up, wait 2
minutes.

Keep the key in for the entire thing.

Seems to work on mine."

truonghthe

Ok then its your AT range switches starting to goes bad. My does that sometimes. Like you said only in SS mode.