S2000 Under The Hood S2000 Technical and Mechanical discussions.

Excessive engine braking?

Thread Tools
 
Old Feb 11, 2002 | 11:01 AM
  #1  
mas's Avatar
mas
Thread Starter
Registered User
 
Joined: Dec 2001
Posts: 2,068
Likes: 0
Default Excessive engine braking?

I have 3000 miles on my 02 and I feel like there's too much engine braking - i.e. the moment I take my foot off the gas pedal the car wants to stop. This is specially obvious in 1st & 2nd gears but I can feel it even in 6th on normal higway driving. Is is normal and I just have to get used to it or what? Thx!
Reply
Old Feb 11, 2002 | 11:04 AM
  #2  
Schatten's Avatar
Registered User
20 Year Member
 
Joined: Oct 2000
Posts: 6,936
Likes: 2
From: Austin
Default

I think what you are experiencing is normal. The drivetrain spins up and down much faster than most cars. Definately not "like your father's Oldsmobile." It takes time to be smooth on and off the gas. And if you see your passenger's head jerking back and forth constantly, that should give you some hint as to a need for being smoother.
Reply
Old Feb 11, 2002 | 12:01 PM
  #3  
RWD_RCKT's Avatar
20 Year Member
 
Joined: Oct 2001
Posts: 3,451
Likes: 0
From: Driving around idiots in TX
Default

Also high compression engines provide more vacuum, thus engine braking.
Reply
Old Feb 11, 2002 | 12:07 PM
  #4  
mas's Avatar
mas
Thread Starter
Registered User
 
Joined: Dec 2001
Posts: 2,068
Likes: 0
Default

I'm not sure I understand what you guys are trying to say. Isn't it all controlled by the ECU via input from the MAP sensor, TPS & the IAC system etc. I mean, shouldn't it be able to control it to make it smooth?

Thanks!
Reply
Old Feb 11, 2002 | 12:37 PM
  #5  
smyroad's Avatar
 
Joined: Jan 2001
Posts: 3,004
Likes: 0
From: Bowie
Default

Did you have an automatic before the S2000? The torque converter in an automatic slips when you let of the gas so you don't get much engine braking. The S2000 does seem to have more engine braking then my old 5-speed integra, but I chalk that up to the stook's more powerful engine.
Reply
Old Feb 11, 2002 | 01:17 PM
  #6  
mas's Avatar
mas
Thread Starter
Registered User
 
Joined: Dec 2001
Posts: 2,068
Likes: 0
Default

Never owned an automatic :-) My previous car was a 98 prelude, 5 speed. At the kind of rpms I'm talking about (3K-4K), I think the prelude had pretty much the same power, if not more.

[QUOTE]Originally posted by 'smyroad
[B]Did you have an automatic before the S2000?
Reply
Old Feb 11, 2002 | 01:47 PM
  #7  
jguerdat's Avatar
Registered User
20 Year Member
 
Joined: Oct 2000
Posts: 3,491
Likes: 1
From: Rochester, NY
Default

Originally posted by RWD_RCKT
Also high compression engines provide more vacuum, thus engine braking.
Well, it wouldn't be vacuum that provides the engine braking - it's compression. If the air in the cylinder is compressed more tightly, it takes more force and if you're not adding gas, it's all pumping loss...
Reply

Trending Topics

Old Feb 11, 2002 | 01:56 PM
  #8  
jguerdat's Avatar
Registered User
20 Year Member
 
Joined: Oct 2000
Posts: 3,491
Likes: 1
From: Rochester, NY
Default

[QUOTE]Originally posted by mas
[B]I'm not sure I understand what you guys are trying to say. Isn't it all controlled by the ECU via input from the MAP sensor, TPS & the IAC system etc.
Reply
Old Feb 11, 2002 | 02:23 PM
  #9  
mas's Avatar
mas
Thread Starter
Registered User
 
Joined: Dec 2001
Posts: 2,068
Likes: 0
Default

Very good explanation! I cay say I'm satisfied now :-)

Thanks!

[QUOTE]Originally posted by jguerdat
[B]

No.
Reply
Old Feb 11, 2002 | 03:07 PM
  #10  
cmnsnse's Avatar
Registered User
20 Year Member
 
Joined: Nov 2000
Posts: 1,349
Likes: 5
From: Ocean City
Default

Along with the gearing is the high RPM too.
Reply



All times are GMT -8. The time now is 07:55 PM.