FL XJR
5/13/2007 8:02:15 AM
My car shifts very smoothly (like buttah
) and I dont notice any issues under normal driving conditions. However, push it a little off the line and as it shifts through the gears there is a hesitation between gears as it "thinks" about shifting. I have never noticed this delay in an automatic before. In other cars, the next gear is always right there - zip, zip, zip through the gears. Honestly, it's a little annoying - you get great take-off, then loose "oomph" as it decides to shift into the next gear, then, zoom again, loose oomph, (shift), zoom. WTF? It feels just like I am riding in a stickshift car. Is this phenomenon normal in an XJR? (BTW, it does it whether it's in sport or normal mode.)
gasguzzlercars
5/13/2007 8:01:02 PM
The gearbox ecu learns your style of driving and changes to suit it, hence if you change your driving style often from driving miss daisy to schumacher - esque, it takes a while to adapt. I have had this happen but it does then stabilise for me if I drive in a consistent style. If it is doing it all the time regardless of how you are driving there may well be something wrong.
Guest
6/25/2007 12:38:52 PM
My 2001 xjr does the same thing... it does not seem normal at all. I have heard about the whole adaptive tranny thing... but i don't think that is it. When accelerating quickly off the line... around 3000rpm the car "loses" itself. Then about 4-6 seconds later kicks in and goes... VERY annoying and it has been several months not... no codes and no one can find the issue. Only I have to pay the labour rate... no outcome... and heres your car back... any ideas??
SMX
FL XJR
6/27/2007 8:52:17 PM
After I noticed my car was shifting strangely (hesitatingly) under harder accelleration, the "restricted performance" warning light started coming on intermittently at first, then more often. I finally took it to the dealer and they said the fuel psi was below spec under hard accelleration. They performed a throttle body cleaning (though I had already done that and it was whistle clean). Then they performed a fuel service which included a new fuel filter. Man, whatta difference! The car shifts beautiflully, even when I stand on the accellerator through all gears! It's like my car has been reborn!
