Notices
Scion tC 1G Drivetrain & Power Engine and transmission discussions...

so i have a question about the slow throttle response..

Thread Tools
 
Search this Thread
 
Old Dec 6, 2006 | 07:56 AM
  #1  
willingwelli's Avatar
Thread Starter
Senior Member
10 Year Member
5 Year Member
SL Member
 
Joined: Aug 2006
Posts: 254
From: Independence, KY
Default so i have a question about the slow throttle response..

Well, I've been reading and I've noticed that the tC has a very slow throttle response because of the Drive-By-Wire system. I've felt this in my car, but sometimes when i'm driving say around 45 mph, and speed it up, it'll take like 2 seconds for it to go... but here's my question, sometimes when i press on the gas pedal, it feels like it kicks or sputters, then it will accelerate... Is that feeling normal or is something dirty like maybe my fuel pump or air filter and needs to be cleaned?
Old Dec 6, 2006 | 08:31 AM
  #2  
CuRiOuSfIsH's Avatar
Senior Member
10 Year Member
5 Year Member
SL Member
 
Joined: Sep 2004
Posts: 1,344
From: Queens, NY
Default

is your car auto or manual?
The issue is a toss up between the DBW system and heavy components in the drivetraind and powertrain.
If your car is a 5 speed, lightweight flywheel seems to speed up the throttle response.
Old Dec 6, 2006 | 08:37 AM
  #3  
willingwelli's Avatar
Thread Starter
Senior Member
10 Year Member
5 Year Member
SL Member
 
Joined: Aug 2006
Posts: 254
From: Independence, KY
Default

I have an automatic. I'm not that worried about the throttle response, I've gotten used to it. My problem is, before the rpms actually initiate, there's a sudden kick (where the delay is) before the rpms rise.
Old Dec 6, 2006 | 02:11 PM
  #4  
kikcaffine's Avatar
Senior Member
10 Year Member
5 Year Member
SL Member
Scinergy
 
Joined: Mar 2005
Posts: 1,744
From: Norcross
Default

Umm its an auto? Thats what they do.....
Old Dec 6, 2006 | 02:20 PM
  #5  
Keeshwah's Avatar
Senior Member
10 Year Member
5 Year Member
SL Member
Team ScioNRG
 
Joined: May 2006
Posts: 896
From: NH
Default

Overdrive will do that I believe. My old camry did that but I didn't see the same behavior on my friend's accord (which doesn't have overdrive). Sometimes there are kits for autos which are more race tuned and you won't see that behavior anymore but there aren't any for the tC to my knowledge. With practice though you should be able to pick up on the shift patterns of the car and be able to take advantage of the shifting. Also using D1, D2, etc is a good way to avoid that throttle lag.
Old Dec 6, 2006 | 02:34 PM
  #6  
Tito_Cruz's Avatar
Senior Member
10 Year Member
5 Year Member
SL Member
 
Joined: Aug 2005
Posts: 761
From: Coke-a-Cola, SC
Default

I have a manual and I've realized this delay in kick as well. Not the delay in throttle response but the heavy components would probably describe the delay very well.
Old Dec 6, 2006 | 08:50 PM
  #7  
WhitetC21's Avatar
Member
5 Year Member
SL Member
 
Joined: Nov 2006
Posts: 49
Default

The tc is a heavy car it is expected.
Old Dec 6, 2006 | 09:44 PM
  #8  
Tito_Cruz's Avatar
Senior Member
10 Year Member
5 Year Member
SL Member
 
Joined: Aug 2005
Posts: 761
From: Coke-a-Cola, SC
Default

I understand it's heavy but that's not what was described here.

THe lag feels almost like a turbo waiting to spool up and kicks in.
Old Dec 7, 2006 | 02:30 PM
  #9  
WhitetC21's Avatar
Member
5 Year Member
SL Member
 
Joined: Nov 2006
Posts: 49
Default

Lol all the negative effects of turbo and none of the benefits. I don't feel any throttle delay tho. I have an exhaust, I believe it helps throttle response.
Old Dec 7, 2006 | 05:05 PM
  #10  
senseiturtle's Avatar
Senior Member
10 Year Member
5 Year Member
SL Member
 
Joined: Sep 2005
Posts: 1,167
From: Shreveport, LA
Default

Originally Posted by willingwelli
I have an automatic. I'm not that worried about the throttle response, I've gotten used to it. My problem is, before the rpms actually initiate, there's a sudden kick (where the delay is) before the rpms rise.
1) Heavy components.
2) Slight delay from DBW.
3) Slight delay from transmission computer, evaluating a drop in gear.
4) Slight delay from Torque converter grabbing hold and transfering power.
5) Heavier weight of car to be accelerated.


Honestly, on my manual, I don't think the DBW delay is very significant. It's something you'd only notice if you really looked for it.
Old Dec 7, 2006 | 06:22 PM
  #11  
mpbrown's Avatar
Senior Member
10 Year Member
5 Year Member
SL Member
 
Joined: Feb 2005
Posts: 257
Default

the car is underpowered and heavy. either get used to it or start power modding it.
Old Dec 7, 2006 | 11:02 PM
  #12  
WhitetC21's Avatar
Member
5 Year Member
SL Member
 
Joined: Nov 2006
Posts: 49
Default

^ +1
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
bootlgr
Scion xA/xB 1st-Gen ICE & Interior
1
Jan 26, 2016 01:22 AM
Greg S
Scion tC 1G Forced Induction
17
May 28, 2015 12:46 AM
Scionxa180
Scion xA Owners Lounge
8
Mar 13, 2015 04:39 AM
TotalChaos
Scion tC 1G Drivetrain & Power
13
Feb 4, 2015 10:24 PM
elzy0000
Scion xB 1st-Gen Owners Lounge
6
Jan 16, 2004 04:31 PM




All times are GMT. The time now is 03:26 PM.