Sticky Kickdown 'Switch'
#1
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On my 2003 XK8 the kickdown 'switch' requires very hard pressure on the accelerator pedal to actuate. The black thing under the accelerator pedal is not actually a switch but a spring loaded plunger (The JTIS refers to it as a Kickdown Plunger) with a spring loaded detent sitting on a threaded stud sticking out of the bulkhead. The actual kickdown function appears to be in the Accelerator Pedal Position (APP) sensor at the other end of the cable, under the hood.
I have tried removing and lubricating the plunger but that has not helped. Has anyone else noticed how hard it is to depress the plunger and discovered a fix. The plunger looks so simple that I doubt a replacement would help.
I suspect that the earlier cars with the 4.0L engine and 5-speed tranny do not have the same system. I tried looking in the JTIS for earlier cars but came up empty handed (No surprise!!!!)
I have tried removing and lubricating the plunger but that has not helped. Has anyone else noticed how hard it is to depress the plunger and discovered a fix. The plunger looks so simple that I doubt a replacement would help.
I suspect that the earlier cars with the 4.0L engine and 5-speed tranny do not have the same system. I tried looking in the JTIS for earlier cars but came up empty handed (No surprise!!!!)
#2
#3
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My 'kick down' was but all inoperative until I took the slack out of the throttle cable at the TB. Now, just punch it and it kicks right in. So you might want to look to see if you have a little bit of cable stretch at the TB...
Only thing that I do not quite understand about the 'kick down' beneath the gas pedal, is the little bit of turn (1/4 to 1/2 turn between stops) that is there and if it means anything or is some sort of an adjustment???
Only thing that I do not quite understand about the 'kick down' beneath the gas pedal, is the little bit of turn (1/4 to 1/2 turn between stops) that is there and if it means anything or is some sort of an adjustment???
#4
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