i have a toyota corolla 1990 1.6L EFI 4 cilinders, afew months ago it started to have high rpm around 2000 at idle, all the time cold and normal temperature just replaced the tps and is still the same have you have the same problem . thank you very. much the reason i want to fix it is because it needs smog check and i wont pass like that and it use more gasoline that before .