Accelaration lag
09-07-2003, 10:29 PM
#1
Junior Member
Thread Starter
Join Date: Jul 2003
Posts: 26
Accelaration lag
Has anyone else expirienced kinda of a lag or delay when wanting to suddently accelerate (auto trans..). It's happened to me a few times now, and I'm wondering if this is normal or should I get it checked out by the "stealer" Thanks! 
RC
RC
09-08-2003, 06:05 AM
#2
Senior Member
Join Date: Aug 2003
Posts: 218
Yes, I've noticed it as well. I think what's happening is the car is downshifting at the same time you're wanting to accelerate and so the hesitation occurs. The hesitation only occurs after slowing down and trying to accelerate so I'm assuming this is where the problem is coming from. It's really quit annoying and I wish there was a fix.
09-08-2003, 11:40 AM
#4
Senior Member
Join Date: Jul 2003
Posts: 167
What kind of delay are talking about? Just cruising along in D and flooring it? There is a lag when it downshifts into another gear. Or are you talking about if you have it in SportTronic mode and are idling along and then gas it?
I happened to notice this the other day, put it in SportTronic on a road with noone on it, turn the music down, put it in 2nd gear, speed up to about 20mph then let off the gas completely, then apply a little gas. You'll notice that when you touch the gas pedal, it doesn't immediately respond, you can feel when the throttle body opens, almost .5 seconds later. I came up beside one of my friends yesterday in his 2001 Z-71, which he thinks is the fastest truck around
and I put it in 2nd rolling along about 35-40mph and I had let off the gas because we were talking to each other, so when he said "I bet you can't outrun me" and floored it so did I. He jumped me pretty damn hard because of that 1/2 second lag, but I quickly retook him after I got into 3rd. Damn new-fangled electronic throttle bodies...
I happened to notice this the other day, put it in SportTronic on a road with noone on it, turn the music down, put it in 2nd gear, speed up to about 20mph then let off the gas completely, then apply a little gas. You'll notice that when you touch the gas pedal, it doesn't immediately respond, you can feel when the throttle body opens, almost .5 seconds later. I came up beside one of my friends yesterday in his 2001 Z-71, which he thinks is the fastest truck around
and I put it in 2nd rolling along about 35-40mph and I had let off the gas because we were talking to each other, so when he said "I bet you can't outrun me" and floored it so did I. He jumped me pretty damn hard because of that 1/2 second lag, but I quickly retook him after I got into 3rd. Damn new-fangled electronic throttle bodies...
09-09-2003, 10:31 AM
#5
Junior Member
Thread Starter
Join Date: Jul 2003
Posts: 26
It's like Quick and the rest of you discribed it... I didn't know that it happend in shift mode also. I have other automatics that don't do this. It's like you have to factor in an extra half a second or so when you want to "get up and go" not good if you're in an "OH ****" situation. I must say when it goes... it goes... I wonder if it being electronic acceleration may be a factor? And if so, is there an adjustment. 
RC
RC
09-09-2003, 02:57 PM
#6
Senior Member
Join Date: Jul 2003
Posts: 167
Originally Posted by Gokusan
It's like Quick and the rest of you discribed it... I didn't know that it happend in shift mode also. I have other automatics that don't do this. It's like you have to factor in an extra half a second or so when you want to "get up and go" not good if you're in an "OH ****" situation. I must say when it goes... it goes... I wonder if it being electronic acceleration may be a factor? And if so, is there an adjustment. RC
RC
09-09-2003, 03:54 PM
#7
Member
Join Date: Feb 2003
Posts: 50
Originally Posted by QuikSilver04
Yup, I was thinking the same. It seems to me like another "idiot" proof part of the car. I just got the K&N cone filter installed last night and it helped a little bit with the problem. I'm hoping the UDP and an ECU flash will help out. Maybe we'll find out how to make it more respond immediately...
It's prolly just the automatic transmission kickdown delay, but as I said, keep an eye on it..
09-09-2003, 05:38 PM
#8
Originally Posted by Aquineas
Keep an eye on this issue guys. There is a known issue with the VQ35 in both the Altima and the 5th gen Maxima regarding the hesitation. It may or may not have been fixed in time for the start of the Maxima production. If you start seeing 6 spd people complain about the hesitation, I'd say it's time to investigate further. There is a TSB out for the 2k2-2k3 Maxima and the 2k2 and 2k3 V6 Altima. Do a search on "hesitation" in the 5th gen forums (search isn't working for me now otherwise I'd provide the linK).
It's prolly just the automatic transmission kickdown delay, but as I said, keep an eye on it..
It's prolly just the automatic transmission kickdown delay, but as I said, keep an eye on it..
09-09-2003, 05:44 PM
#9
Originally Posted by Aquineas
Keep an eye on this issue guys. There is a known issue with the VQ35 in both the Altima and the 5th gen Maxima regarding the hesitation. It may or may not have been fixed in time for the start of the Maxima production. If you start seeing 6 spd people complain about the hesitation, I'd say it's time to investigate further. There is a TSB out for the 2k2-2k3 Maxima and the 2k2 and 2k3 V6 Altima. Do a search on "hesitation" in the 5th gen forums (search isn't working for me now otherwise I'd provide the linK).
It's prolly just the automatic transmission kickdown delay, but as I said, keep an eye on it..
It's prolly just the automatic transmission kickdown delay, but as I said, keep an eye on it..
09-09-2003, 06:21 PM
#10
Member
Join Date: Dec 2001
Posts: 39
Originally Posted by Aquineas
Keep an eye on this issue guys. There is a known issue with the VQ35 in both the Altima and the 5th gen Maxima regarding the hesitation. It may or may not have been fixed in time for the start of the Maxima production. If you start seeing 6 spd people complain about the hesitation, I'd say it's time to investigate further. There is a TSB out for the 2k2-2k3 Maxima and the 2k2 and 2k3 V6 Altima. Do a search on "hesitation" in the 5th gen forums (search isn't working for me now otherwise I'd provide the linK).
It's prolly just the automatic transmission kickdown delay, but as I said, keep an eye on it..
It's prolly just the automatic transmission kickdown delay, but as I said, keep an eye on it..
09-09-2003, 08:58 PM
#11
Originally Posted by jvitale
The TSB you are referring to also applies to 5 speeds. This TSB only addresses a hestiation that may be felt at 2500 rpm.
09-10-2003, 06:21 AM
#12
Senior Member
Join Date: Jul 2003
Posts: 167
I remembered to last night to try and see if the lag was still as bad after this filter so I put it in SportTronic, slowed down until it went into 2nd, and let it slow down a little more, then gave it full throttle. It still takes almost a half a second for the TB to open, but now when it does, it lays you back in the seat immediately, instead of just pulling steadily. I really think it's the electronics that deal with the TB. It seems like the TB doesn't respond immediately to the gas pedal whenever your not on the gas. It's hard to put into words, easier just to experience in person.
09-10-2003, 06:28 AM
#13
Member
Join Date: Feb 2003
Posts: 50
Originally Posted by QuikSilver04
I remembered to last night to try and see if the lag was still as bad after this filter so I put it in SportTronic, slowed down until it went into 2nd, and let it slow down a little more, then gave it full throttle. It still takes almost a half a second for the TB to open, but now when it does, it lays you back in the seat immediately, instead of just pulling steadily. I really think it's the electronics that deal with the TB. It seems like the TB doesn't respond immediately to the gas pedal whenever your not on the gas. It's hard to put into words, easier just to experience in person.
09-10-2003, 07:16 AM
#15
Member
Join Date: Feb 2003
Posts: 50
Originally Posted by QuikSilver04
Has there been anything to correct the problem? Do they know what's causing it on them? Is it the TB itself?
NTB-022
NTB-023
09-10-2003, 01:22 PM
#16
Member
Join Date: Feb 2003
Posts: 34
Hmmm
Guys,
That throttle body servo (I'm assuming it's similar to the one in my Alty) is FAST.
There is no delay in it opening. I've watched it open and it moves like lightning. There should in no way be a delay. Check out if any of the 6-speed guys feel it or not, and then you will know. If it only happens under certain circumstances, it's not the servo, I can tell you that for sure. That was the irritation that was involved in the hesitation from before. It wasn't consistent. It could happen three times in a row, and then not for a while. I know. I had it, and the upgrade mentioned (in Aquineas' PDFs) fixed it.
The hesitation that plagued the Altys and Maxs was in no way normal.
Good luck.
10e
That throttle body servo (I'm assuming it's similar to the one in my Alty) is FAST.
There is no delay in it opening. I've watched it open and it moves like lightning. There should in no way be a delay. Check out if any of the 6-speed guys feel it or not, and then you will know. If it only happens under certain circumstances, it's not the servo, I can tell you that for sure. That was the irritation that was involved in the hesitation from before. It wasn't consistent. It could happen three times in a row, and then not for a while. I know. I had it, and the upgrade mentioned (in Aquineas' PDFs) fixed it.
The hesitation that plagued the Altys and Maxs was in no way normal.
Good luck.
10e
09-10-2003, 10:01 PM
#17
Banned
Join Date: Jun 2003
Posts: 351
Just for your information, I had the TSB performed on my 2003 auto and it helped out tremendously. It is a new program for the ECM. They flash the ECM and load the new program. Much quicker shifts and less time thinking about which gear to go to.
09-11-2003, 06:59 AM
#18
Donating Maxima.org Member
Join Date: Apr 2003
Posts: 184
There was a lag in my 2001 330i 5spd manual as well
There was a lag in my 2001 330 5spd manual as well.
It really sucked on hills as the friction point on the clutch was very high.
Aftermarket ECM flash fixed this issue.
It really sucked on hills as the friction point on the clutch was very high.
Aftermarket ECM flash fixed this issue.
09-16-2003, 07:44 PM
#20
Senior Member
Join Date: Dec 2000
Posts: 596
Drive SL with 4 spd auto. No hesitation at all, ever, with 7500 miles. I did install a K & N drop-in, but that was only a few thousand miles ago. I used to have an 02 6 speed and it had the hesitation, they did the TSB work, and it still had it. I just lived with it; it really wasn't a problem for me. This 04 is perfect. I don't drive it often, but did drive it today. I love, absolutely love, that car.
srm
srm
09-21-2003, 11:24 AM
#22
Newbie - Just Registered
Join Date: Sep 2003
Posts: 2
I installed a K & N air filter in my 04, and for about a week you could tell it was a little more responsive, quicker and could breathe easier, now it drives like the old filter is back in it. Does the "computer" change anything?
09-21-2003, 07:15 PM
#23
Member
Join Date: Nov 2000
Posts: 95
Originally Posted by hanomag37
I installed a K & N air filter in my 04, and for about a week you could tell it was a little more responsive, quicker and could breathe easier, now it drives like the old filter is back in it. Does the "computer" change anything?
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