Anyone have a problem with acceleration? Sometime, when I press on the gas pedal, nothing happens.
you need to turn the car on firstAnyone have a problem with acceleration? Sometime, when I press on the gas pedal, nothing happens.
The problem some of you are detailing is due to the Aisin transmission. It lags the acceleration because it is reluctant to downshift. You'll notice that it'll stay as low as 1200 rpm. I'm unsure if it's LR that mapped it this way to boost highway mpg but an ECU remap(or manual override via paddle shifters) helps ALOT. So if you're cruising and RPMs are at ~1100-1300 rpm, stomping on the accelerator does little to accelerate since tranny stays at the current gear instead of downshifting(sometimes after 2-3 secs of this lag, you'll see the tranny suddenly downshifting and acceleration is sudden). Manually shifting down will see a boost in acceleration. This is a known "issue" but it's working as designed(even though it's a flawed design) and the number 1 reason to do a custom ECU remap(apart from increasing boost and whatnot)
As to the OP: I'm unsure of the issue you're detailing other than the brake-pedal-pressure-safety that someone else has mentioned.
Automatic transmission designs have changed in favor of extending FE beginning in about 2000. The ATF line pressure is no longer held constant at high pressure. When you enter a coastdown, slowdown, mode via relaxing pressure on the gas pedal the tranny will ALWAYS upshift as is appropriate. The engine is now at or near idle so the pumping capacity of the gear ATF gear pump is at the design minimum. Once your downshift is "in process" the real-time ATF line pressure control will be commanded to high pressure but since that cannot happen for 1-2 seconds the DBW system holds the engine off until the required downshift can be completed.The problem some of you are detailing is due to the Aisin transmission.
It lags the acceleration because it is reluctant to downshift.
No, it simply lacks the "energy" to accomplish a downshift closely following an upshift.
You'll notice that it'll stay as low as 1200 rpm. I'm unsure if it's LR that mapped it this way to boost highway mpg but an ECU remap(or manual override via paddle shifters) helps ALOT. So if you're cruising and RPMs are at ~1100-1300 rpm, stomping on the accelerator does little to accelerate since tranny stays at the current gear instead of downshifting(sometimes after 2-3 secs of this lag, you'll see the tranny suddenly downshifting and acceleration is sudden). Manually shifting down will see a boost in acceleration. This is a known "issue" but it's working as designed(even though it's a flawed design) and the number 1 reason to do a custom ECU remap(apart from increasing boost and whatnot)
As to the OP: I'm unsure of the issue you're detailing other than the brake-pedal-pressure-safety that someone else has mentioned.