Lunacy

hi everyone I just bought mine used '01 s2000
when the car is in first gear @ around 3000~4000RPM, if I lift off the throttle the car jerks, is that normal or has anyone experienced this?
thanks in advance for your input

djohnston

Not exactly sure what you mean by "the car jerks"? If you're referring to the sudden lack of acceleration brought on by a lift-throttle, that's completely normal. There's also something known as "flywheel effect" which is more apparent when using unsmooth throttle movements in low gear. Basically the S, like most Hondas, doesn't like sudden applications/liftings of the throttle in first gear, it's very difficult to be smooth in first and you should really only use first gear when accelerating. If you have to lift off the throttle/brake in first, push in the clutch at the same time. Hope this helps-

Duncan

Destiny2002

Be smooth on the throttle. A high compression engine in first provides a lot of engine braking when you lift off the throttle.

billo

This commonly occurs when going over a bump. Your right foot shifts slightly fore and aft, creating a small throttle movement. This sets up a driver induced oscillation (DIO?) because as the car jerks back and forth your foot does too, making the situation progressively worse. Consciously keeping your foot still when transiting rough surfaces in 1st gear helps. But, sometimes you'll have to depress the clutch and smoothly re-engage.

xviper

Are you talking about one single jerk or a series of oscillations? If it's one jerk on throttle lift off, then this is simply the drive train closing up all those little gaps between gear teeth, etc. I take it if this is the case, you've never owned a high revving manual car? An automatic would "insulate you against this sort of "back-lash. A low revving/low compression engined manual car wouldn't give you enough compression braking for you to feel this jerk.
If it is a series of oscillations, then it is most likely a sensor problem and you'll need to dig deeper or have the dealer look at it. I could alos mean something like the clutch is badly worn but you'd know this by its performance in aceleration too. Similarly if you had sheared off teeth in your tranny or diff, you'd feel this during normal driving and not just in deceleration.

jahnke

Good question......I was wondering the same thing!!!

Liebernoodle

[QUOTE]Originally posted by djohnston
[B]Not exactly sure what you mean by "the car jerks"?

exzeltus

[QUOTE]Originally posted by Liebernoodle
[B]
I think Duncan has the right idea.

psi

Mine did it when i was in traffic going at a real low steady rpm and then I rolled into the throttle slowly, it would hesitate, fuel pump was changed out and it solved it completely, also noticed more power after 6k.....

koala

My RSX did this as does my S2000. You just need to be smooth with the throttle.