I have the symptoms of a sticking accelerator when cold. Don't think it's actually sticking just same symptoms. Change gear at say 3,000RPM and it hangs there or rev's higher even. OK when warmed up a bit. High quality 98 octane fuel, recently Techron in fuel so injectors are clean, 75,000kms ony on odo. Any ideas?

Does it go away if you tap the accelerator?

 

The return spring on the throttle body could be mucky. Spray some thin oil into it and then dry it out again with compressed air. Worked for me!

No I think its computer or something. Tapping accelerator makes no difference. Fine afte say 60 seconds running.