Is it just me but when im on it and shift, the car feels like it hits a brick wall for a split second before it goes again. i tried power shifting and the same thing. DBW or what?


Modified by hawaiian06si at 12:38 AM 3/15/2007

 

User error?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hawaiian06si &raquo;</TD></TR><TR><TD CLASS="quote">Is it just me but when im on it and shift, the car feels like it hits a brick wall for a split second before it goes again. i tried power shifting and the same thing. DBW or what?


Modified by hawaiian06si at 12:38 AM 3/15/2007</TD></TR></TABLE>

its just you.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kamikaze84 &raquo;</TD></TR><TR><TD CLASS="quote">User error?</TD></TR></TABLE>

Except with no question mark.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Type X &raquo;</TD></TR><TR><TD CLASS="quote">its just you.</TD></TR></TABLE>

x2

Explain more about how you shift with clutch and gas. Maybe we can better help you with your problem.

 

yep, just you.

 

I have actually seen the same problem with my car. I will start in 1st and get on it pretty good as soon as I shift into second the car lags for a second and then takes back off. i don't think its just a user thing guys.

 

ok if its not a user error, help us help you, when you shift from first to second where does your rpm's land when you shifted to 2nd gear and so on ...???

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cutler2start &raquo;</TD></TR><TR><TD CLASS="quote">I have actually seen the same problem with my car. I will start in 1st and get on it pretty good as soon as I shift into second the car lags for a second and then takes back off. i don't think its just a user thing guys.</TD></TR></TABLE>

thats if the car is ICE COLD.. to combat 1st and 2nd dibacle i go into 3rd and "cruise at low speeds"...= zero bucking or hesitation.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hawaiian06si &raquo;</TD></TR><TR><TD CLASS="quote"> DBW or what?

</TD></TR></TABLE>

Learn how to drive

 

Could be a couple things.

1. I believe what your feeling is the MAP and MAF sensors adjusting your fuel supply when you change driving style (from conservative to aggressive or from parking to aggressive), the sensors send signals to the ECU and changes the way the engine performs, this causes a hesitation when shifting (usually between 1st and 2nd, and 2nd to 3rd). The way I understand it, basically the ECU gets confused and shuts the fuel off for a few 10th of a sec when shifting, which is enough to cause a jerk when your shifting hard. This should only happen once or twice (during shifting) until the ECU figures out what your doing and supplies the required fuel.

2. If your taking the foot off the gas when shifting hard, DBW shuts off the fuel supply for a breif moment because it is antisapating a non-aggresive shift. But if your power shifting and still having this problem, then this might not be the case.

Both of these "causes" were told me by different mechanics, so whether or not these are really true, I don't know. They did make sense to me however.

Moral of the story, it's not a Race car, don't expect the car to respond like a Race car when you drive it like a Race car. &lt;-- This nugget of knowledge might be worthy of a sig.

 

turn off VSA?!

*edit.
nevermind your 06....it's just you.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by originalg00kster &raquo;</TD></TR><TR><TD CLASS="quote">turn off VSA?!

*edit.
nevermind your 06....it's just you.</TD></TR></TABLE>

Mine is an '07. I can see what the guy above is saying about the ECU being the case. Most times it happens, when i think about it, is when I jump on it to get around some ******* or just go from a non aggressive driving style to a more aggressive style.

 

don't try to go from zero to hero and you'll be fine... or, just learn how to drive

 

cutler turn off VSA if you have an 07.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by originalg00kster &raquo;</TD></TR><TR><TD CLASS="quote">cutler turn off VSA if you have an 07.</TD></TR></TABLE>
Not to familiar with VSA but shutting this off won't have any affect of MPG or anything like that that i should be concerned with?

 

It wont effect your MPG by turning it off. Its just a vehicle stablity assist so you probably wont even notice or need it most of the time.

 

I do no how drive, i was driving a stick for 8 years so dont tell me i dont no how to drive, please. and yes i was power shifting the car and it still does it, it seems like the tires what to spin but it just gives a little chirp then thats when that lag come in.

 

my vote for the DBW

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hellzcivic &raquo;</TD></TR><TR><TD CLASS="quote">Could be a couple things.

1. I believe what your feeling is the MAP and MAF sensors adjusting your fuel supply when you change driving style (from conservative to aggressive or from parking to aggressive), the sensors send signals to the ECU and changes the way the engine performs, this causes a hesitation when shifting (usually between 1st and 2nd, and 2nd to 3rd). The way I understand it, basically the ECU gets confused and shuts the fuel off for a few 10th of a sec when shifting, which is enough to cause a jerk when your shifting hard. This should only happen once or twice (during shifting) until the ECU figures out what your doing and supplies the required fuel.

2. If your taking the foot off the gas when shifting hard, DBW shuts off the fuel supply for a breif moment because it is antisapating a non-aggresive shift. But if your power shifting and still having this problem, then this might not be the case.

Both of these "causes" were told me by different mechanics, so whether or not these are really true, I don't know. They did make sense to me however.

Moral of the story, it's not a Race car, don't expect the car to respond like a Race car when you drive it like a Race car. &lt;-- This nugget of knowledge might be worthy of a sig.

</TD></TR></TABLE>


Dang hellz... You know whats up huh~!?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hawaiian06si &raquo;</TD></TR><TR><TD CLASS="quote">I do no how drive, i was driving a stick for 8 years so dont tell me i dont no how to drive, please. and yes i was power shifting the car and it still does it, it seems like the tires what to spin but it just gives a little chirp then thats when that lag come in.</TD></TR></TABLE>
power shifting is no chirp. maybe in 3rd gear yeah...i feel no lag at all when i powershift..just wheel spin maybe a little wheel hop but thats about it...no lag at all..thats the only way i found to get around DBW.

 

when you're "powershifting" you should be spinning in the beginning of second, and barking into third .

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hawaiian06si &raquo;</TD></TR><TR><TD CLASS="quote">I do no how drive, i was driving a stick for 8 years so dont tell me i dont no how to drive, please. and yes i was power shifting the car and it still does it, it seems like the tires what to spin but it just gives a little chirp then thats when that lag come in.</TD></TR></TABLE>

So back to my orginal question when you shift from 1st to 2nd gear where do you land RPM wise and then where do you land in 3rd, wonder if you landing barley on vtec cross over

 

I think you are hitting the rev limiter which is like hitting a brick wall. Shift sooner.

 

To the OP --&gt; from 1st to 2nd @ what RPM range do you shift from and @ what RPM range do you land in when you shift into 2nd (as others have asked before)??

Also, do you fully step on the clutch all the way down to the floor or 1/2-3/4 all the way in just enough for the gear to engage?

I'm not saying you don't know how to drive, but I find it quicker to shift if I press the clutch enough for it to grab the gear.

 

my car was lagging something awful when i went to the track the other night, and the biggest problem was second gear rpms dropping below 6k after i shifted as quick as possible. i dont know why it was doing it, but it did it just about everytime. the car was warm for every pass, and it did it almost each time i went down. i dont know what it is, but i ahve to take it easy on my 2nd gear now because even with the new synchros it still sucks. good luck and just keep working on it