Sticky electronic accelerator problem, BMW E46, drive-by-wire

[Shaun213]

Hi folks
Does anyone out there having problem with the electronic accelerator, e-gas or drive-by-wire. I can feel a small physical resistance on the accelerator only when the footwell area got nice & warm, this problem is very much temperature dependent I must say. The accelerator is nice and smooth when you drive it for the first time in the morning, i.e. interior temperature below 15 degree C; the resistance of accelerator gradually goes up as the footwell temperature increasing.
The dealer replaced the accelerator modules and this problem came back a couple of week after the replacement.
Your help, experience and advice in this matter would be highly appreciated.
Regards……Shaun