PDA

View Full Version : Pulsating acceleration



jbourke
05-24-2006, 04:55 AM
When I step on it and keep the accelerator steady (as in fixed, in one place; don't know how to describe it better) my car seems to accelerate in stages. It feels like the ECU is adjusting throughout the whole time accelerating and every "stage" has more power than the one previous ...

Does anybody recognize this behaviour (maybe it's completely normal)?

632 Regal
05-24-2006, 06:57 AM
yep normal.
When I step on it and keep the accelerator steady (as in fixed, in one place; don't know how to describe it better) my car seems to accelerate in stages. It feels like the ECU is adjusting throughout the whole time accelerating and every "stage" has more power than the one previous ...

Does anybody recognize this behaviour (maybe it's completely normal)?

Dave M
05-24-2006, 10:35 AM
Ditto.

Mine feels the same.

Alexlind123
05-24-2006, 10:47 AM
are you talking about when the transmission shift into another gear?

Robin-535im
05-24-2006, 10:58 AM
Ditto.

Mine feels the same.
Both my 535's have done it.

Dave M
05-24-2006, 11:40 AM
are you talking about when the transmission shift into another gear?

Nope, with my stick, its just not a super smooth acceleration. You can feel the points at which power is increased.

Dave M

Alexlind123
05-24-2006, 11:43 AM
Nope, with my stick, its just not a super smooth acceleration. You can feel the points at which power is increased.

Dave M

I have never noticed that.

kick7ca
05-25-2006, 10:04 AM
My 535 is like that also, except if you load the clutch a bit before finishing a shift, like when you churp the tires in second, then it seems to accelerate cleanly.

I've learned I can accelerate much faster using wheel spin off the line and shifting into second. RWD LSD = fun!

Morgenster
05-26-2006, 04:29 AM
Isn't this directly related to the engines torque curve?
Mine does the same thing and I'm happy that power increases instead of the invers :D.

NovceGuru
05-26-2006, 09:43 AM
I replaced my 02 sensor and it took care of that. It was especially noticeable when I would putt putt up a hill @ 2500-3000 rpm. I still have some damn stinky exhaust though.

NovceGuru

s_ribbens
05-26-2006, 11:08 AM
I agree. My car seems to accelerate much better all around if I'm aggressive from the get-go.