Aggressive driving and shifting?

KB798 · 04-15-2007, 08:27 PM

When I drive my 07 LX normally, I don't really experience too much rev hang so I can shift through the gears quite smoothly.

However, when I step on the gas and shift in the upper RPM ranges, it gets really jolty because when I engage the gears with gas into the next gear, the throttle doesn't respond normally. I have to step all the way on the throttle and then the RPMs will begin to rise. Anybody else experience this? I'm not sure if this is rev hang.

honda06si · 04-15-2007, 08:30 PM

Quote:

Originally Posted by KB798

When I drive my car normally, I don't really experience too much rev hang so I can shift through the gears quite smoothly.

However, when I step on the gas and shift in the upper RPM ranges, it gets really jolty because when I engage the gears with gas into the next gear, the throttle doesn't respond normally. I have to step all the way on the throttle and then the RPMs will begin to rise. Anybody else experience this? I'm not sure if this is rev hang.

no ive never experienced what your takling about

KB798 · 04-15-2007, 08:37 PM

Edit: It's a 07 LX coupe

NickC89 · 04-15-2007, 08:46 PM

Quote:

Originally Posted by honda06si

no ive never experienced what your takling about

I wonder why?

Mateen · 04-15-2007, 10:15 PM

Quote:

Originally Posted by KB798

When I drive my 07 LX normally, I don't really experience too much rev hang so I can shift through the gears quite smoothly.

However, when I step on the gas and shift in the upper RPM ranges, it gets really jolty because when I engage the gears with gas into the next gear, the throttle doesn't respond normally. I have to step all the way on the throttle and then the RPMs will begin to rise. Anybody else experience this? I'm not sure if this is rev hang.

Thats the main problem with DBW. I get that with my A/T also. if I step on the gas too fast, the rpm would jump up before I get a respond from the trany

**Yodums** · 04-15-2007, 11:08 PM

I'm going to assume this is a manual transmission. Are you positive you're fully engaging the clutch prior to adding throttle? If you're revs are jumping up a bit and then falling down, it sounds like clutch slippage because you haven't fully engaged the clutch.

KB798 · 04-16-2007, 01:58 AM

It is a manual transmission, and my clutch isn't slipping. It feels more like a delay in the throttle response. I'm used to a traditional cable linked throttle where there's an instant response, but with this DBW it feels as if the car is hesitating for a split second during high RPM shifts. Thus when engaging into the next gear, I have to step down all the way on the throttle to compensate for the lag.

woodypup · 04-17-2007, 01:20 AM

hi everyone, i've been a lurker for about a month, then two weeks ago I leased a coupe LX 5-speed. gained a lot of good info from this site, thanks!

i've also been having some trouble with smooth gear changes as well, and am still trying to find a way to drive/shift without the "jolt" that the OP described (perfect description, btw).

i haven't noticed too severe "rev hang" like has been described for the Si's, but I guess it's still present in our 1.8's. Anyway, my theory is the same as the OP's: driving "normally" means that during shifting you are allotting a bit more time for the revs to fall and therefore engage the next gear smoothly.

However, if you are driving aggressively, then you are not allotting time for the revs to fall, therefore when you engage the next gear, your engine speed is too high, and the car will "jolt" down when you release the clutch pedal.

(sorry, i don't want to read any replies like "learn to drive stick, dummy"...I've owned a 95 Civic, 00 Celica GT-S, 04 RX-8, and 03 RSX-S, so I'm pretty sure it's not just my ability to drive stick!):)

i hope this helps clarify the problem to some of us who didn't understand...

KB798 · 04-20-2007, 04:11 AM

woodypup that was a great clarification of what I was trying to say!

I noticed that when I push in the clutch and stab the throttle, it takes a second or two for it to respond. However, if I do it progressively, then it'll be more responsive.

Can I go to the dealership to fix that lag when I stab on the throttle? I plan on auto-x the car, and I miss having the traditional cable throttle

.

Englishe30 · 04-20-2007, 10:01 AM

I have had my lx coupe 5spd for a little over a year now and have the same issue sometimes not all the times. I have driven many 5spds in the past and never had this issue before. It seems like there is an exact point of engagement when your high-rev shifting sometimes I hid it dead on and sometimes I jerk the car....It can be rather embarasing when friends are around...

edciv · 04-20-2007, 01:13 PM

i have the 06 ex coupe.. and the only time i have a grip about the throttle is when i floor it, and then go to switch gears from like second to third. the RPMs will shoot up about 500 when i let go of the gas and hit the clutch to shift it.. it might be driver error, but it only happens sometimes.. most of the time i won't notice it cause i'm going from first to second entirely too fast and chirping the tires

dextor · 04-21-2007, 03:31 AM

I wish the DBW was more responsive as well, and the revs drops quicker

sionthefly · 04-21-2007, 01:49 PM

i have never experienced this on any of my cars i have owned.

poizun · 04-21-2007, 03:39 PM

Quote:

Originally Posted by edciv

i have the 06 ex coupe.. and the only time i have a grip about the throttle is when i floor it, and then go to switch gears from like second to third. the RPMs will shoot up about 500 when i let go of the gas and hit the clutch to shift it.. it might be driver error, but it only happens sometimes.. most of the time i won't notice it cause i'm going from first to second entirely too fast and chirping the tires

dude i get this too. i wonder if it's a side effect of the 'rev hang'?

Si_Chick · 04-21-2007, 03:47 PM

Quote:

Originally Posted by KB798

woodypup that was a great clarification of what I was trying to say!

I noticed that when I push in the clutch and stab the throttle, it takes a second or two for it to respond. However, if I do it progressively, then it'll be more responsive.

Can I go to the dealership to fix that lag when I stab on the throttle? I plan on auto-x the car, and I miss having the traditional cable throttle

.

It's the DBW. If the car was programmed a little better it probably wouldn't be so bad.
And as for those asking if this is related to rev hang... NO, it's not.

Shoulda got the Si

farmerbuzz · 04-24-2007, 07:26 PM

Quote:

Originally Posted by KB798

When I drive my 07 LX normally, I don't really experience too much rev hang so I can shift through the gears quite smoothly.

However, when I step on the gas and shift in the upper RPM ranges, it gets really jolty because when I engage the gears with gas into the next gear, the throttle doesn't respond normally. I have to step all the way on the throttle and then the RPMs will begin to rise. Anybody else experience this? I'm not sure if this is rev hang.

I too have an 07 LX 5spd coupe, and experience this exact same problem. I know it isn't a "learn to drive stick" issue because it will happen even if I let the engine go all the way back to idle speed before getting into the next gear. To reproduce: go at least 30 mph, disengage the clutch, wait for engine to go back to idle speed, slam the accelerator to the floor and watch as the tach doesn't budge for 1-2 seconds. This makes it really tough to shift quickly, because you're no longer in control of the engine.

I would spend good money to get dbw out of this damn car (didn't even realize it had dbw when I bought it cuz I was in a hurry to replace my dead 89 civic). I'm really sad to no longer be in control of the engine -- that was the whole point of getting a manual transmission. Now I have to constantly persuade the computer that yes, I really do want to waste some gas.

Edit: So maybe its not 1-2 seconds, but there is definitely lag there and its tricky to predict the computer that is trying to predict you. Sure its not the most powerful engine, but now there is a complete unknown between my foot and the engine, and I never know whether I'm being limited by the treehug detector. Hopefully I'll get used to it eventually, I'm only 50 miles out of the break-in period atm.

woodypup · 04-27-2007, 08:11 AM

Quote:

Originally Posted by farmerbuzz

To reproduce: go at least 30 mph, disengage the clutch, wait for engine to go back to idle speed, slam the accelerator to the floor and watch as the tach doesn't budge for 1-2 seconds. This makes it really tough to shift quickly, because you're no longer in control of the engine.

Yeah, I checked again last night while driving home. I can figure there's a couple things going on that make it difficult to drive smoothly:

1. as farmerbuzz said, there is a delay between stepping on the accel pedal, and the engine actually responding. About 0.5 seconds, but it's enough to make it difficult to balance releasing the clutch with applying throttle.

2. it's nowhere near as bad as the Si's rev hang, but there is a slight tendency for the engine to take its time falling down in revs after you step on the clutch pedal.

put these two things together, and basically i find it difficult to smoothly engage the next gear and release the clutch, because i haven't gotten used to the way the clutch and engine speed behave yet (I've had it for only 3 weeks and 700 miles).

KB798 · 04-28-2007, 05:51 AM

So how do you guys shift when going through the rev range? I keep having trouble having a continuous flow of power when going into the next gear because of the delay in the throttle.

08lxciviccoupe · 07-04-2008, 02:11 PM

Yep I experienced this today very badly to the point i cussed the car out. Now that we have clarified most people have this problem is there a fix?

Gene J · 07-04-2008, 07:39 PM

You bought an economy car that will get excellent mileage and still give good performance. Read through the thread on the i-VTEC and you (maybe) will understand why you are getting what you call DBW lag. The lag is the i-VTEC kicking in and out when you let up and hit the gas again. Mine never lags, but I stay in i-VTEC mode all the time.

Remember: VTEC in = econo mode
VTEC out = normal mode
This is the opposite of most VTEC motors.

04-15-2007, 08:27 PM	#1 (permalink)
KB798 Senior Member Join Date: Mar 2007 Posts: 168 iTrader: 0 / 0%	Aggressive driving and shifting? When I drive my 07 LX normally, I don't really experience too much rev hang so I can shift through the gears quite smoothly. However, when I step on the gas and shift in the upper RPM ranges, it gets really jolty because when I engage the gears with gas into the next gear, the throttle doesn't respond normally. I have to step all the way on the throttle and then the RPMs will begin to rise. Anybody else experience this? I'm not sure if this is rev hang. Last edited by KB798; 04-15-2007 at 08:36 PM.

04-15-2007, 11:08 PM	#6 (permalink)
Yodums Scrodums Join Date: May 2006 Location: Ottawa, Canada Posts: 8,325 HIRO - ಠ_ಠ iTrader: 9 / 100%	I'm going to assume this is a manual transmission. Are you positive you're fully engaging the clutch prior to adding throttle? If you're revs are jumping up a bit and then falling down, it sounds like clutch slippage because you haven't fully engaged the clutch. __________________ 2007 Taffeta White Civic Si Coupe

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04-15-2007, 08:37 PM	#3 (permalink)
KB798 Senior Member Join Date: Mar 2007 Posts: 168 iTrader: 0 / 0%	Edit: It's a 07 LX coupe

04-16-2007, 01:58 AM	#7 (permalink)
KB798 Senior Member Join Date: Mar 2007 Posts: 168 iTrader: 0 / 0%	It is a manual transmission, and my clutch isn't slipping. It feels more like a delay in the throttle response. I'm used to a traditional cable linked throttle where there's an instant response, but with this DBW it feels as if the car is hesitating for a split second during high RPM shifts. Thus when engaging into the next gear, I have to step down all the way on the throttle to compensate for the lag.

04-17-2007, 01:20 AM	#8 (permalink)
woodypup Junior Member Join Date: Apr 2007 Posts: 5 iTrader: 0 / 0%	hi everyone, i've been a lurker for about a month, then two weeks ago I leased a coupe LX 5-speed. gained a lot of good info from this site, thanks! i've also been having some trouble with smooth gear changes as well, and am still trying to find a way to drive/shift without the "jolt" that the OP described (perfect description, btw). i haven't noticed too severe "rev hang" like has been described for the Si's, but I guess it's still present in our 1.8's. Anyway, my theory is the same as the OP's: driving "normally" means that during shifting you are allotting a bit more time for the revs to fall and therefore engage the next gear smoothly. However, if you are driving aggressively, then you are not allotting time for the revs to fall, therefore when you engage the next gear, your engine speed is too high, and the car will "jolt" down when you release the clutch pedal. (sorry, i don't want to read any replies like "learn to drive stick, dummy"...I've owned a 95 Civic, 00 Celica GT-S, 04 RX-8, and 03 RSX-S, so I'm pretty sure it's not just my ability to drive stick!):) i hope this helps clarify the problem to some of us who didn't understand...

04-20-2007, 04:11 AM	#9 (permalink)
KB798 Senior Member Join Date: Mar 2007 Posts: 168 iTrader: 0 / 0%	woodypup that was a great clarification of what I was trying to say! I noticed that when I push in the clutch and stab the throttle, it takes a second or two for it to respond. However, if I do it progressively, then it'll be more responsive. Can I go to the dealership to fix that lag when I stab on the throttle? I plan on auto-x the car, and I miss having the traditional cable throttle .

04-20-2007, 10:01 AM	#10 (permalink)
Englishe30 Senior Member Join Date: Jan 2007 Location: Hackettstown, NJ Age: 26 Posts: 1,228 Mark iTrader: 15 / 100%	I have had my lx coupe 5spd for a little over a year now and have the same issue sometimes not all the times. I have driven many 5spds in the past and never had this issue before. It seems like there is an exact point of engagement when your high-rev shifting sometimes I hid it dead on and sometimes I jerk the car....It can be rather embarasing when friends are around...

04-20-2007, 01:13 PM	#11 (permalink)
edciv Senior Member Join Date: Sep 2006 Location: New Jersey Age: 22 Posts: 612 iTrader: 0 / 0%	i have the 06 ex coupe.. and the only time i have a grip about the throttle is when i floor it, and then go to switch gears from like second to third. the RPMs will shoot up about 500 when i let go of the gas and hit the clutch to shift it.. it might be driver error, but it only happens sometimes.. most of the time i won't notice it cause i'm going from first to second entirely too fast and chirping the tires

04-21-2007, 03:31 AM	#12 (permalink)
dextor Senior Member Join Date: Feb 2007 Posts: 437 iTrader: 0 / 0%	I wish the DBW was more responsive as well, and the revs drops quicker

04-21-2007, 01:49 PM	#13 (permalink)
sionthefly Member Join Date: Apr 2007 Location: SoCal High Desert Age: 22 Posts: 60 iTrader: 0 / 0%	i have never experienced this on any of my cars i have owned.

04-28-2007, 05:51 AM	#18 (permalink)
KB798 Senior Member Join Date: Mar 2007 Posts: 168 iTrader: 0 / 0%	So how do you guys shift when going through the rev range? I keep having trouble having a continuous flow of power when going into the next gear because of the delay in the throttle.

07-04-2008, 02:11 PM	#19 (permalink)
08lxciviccoupe Member Join Date: May 2008 Location: Mississippi Age: 41 Posts: 93 Clay iTrader: 0 / 0%	Yep I experienced this today very badly to the point i cussed the car out. Now that we have clarified most people have this problem is there a fix?

07-04-2008, 07:39 PM	#20 (permalink)
Gene J Senior Member Join Date: May 2008 Location: Moline, Illinois Age: 65 Posts: 156 Gene Johnson iTrader: 0 / 0%	You bought an economy car that will get excellent mileage and still give good performance. Read through the thread on the i-VTEC and you (maybe) will understand why you are getting what you call DBW lag. The lag is the i-VTEC kicking in and out when you let up and hit the gas again. Mine never lags, but I stay in i-VTEC mode all the time. Remember: VTEC in = econo mode VTEC out = normal mode This is the opposite of most VTEC motors.