Hi. I have a 99' legacy wagon (140k miles) that has developed an issue during the winter. I have no low end power despite holding the accelerator at a constant. It varies when the power kicks in, often around 3k rpms but sometime longer if starting from a stop going up hill. I took it in to my local subaru specialist (not the dealer). First they simply cleaned the master air meter and filter. This caused the issue to go away for a week and then came right back. Next I had a smooth roller replaced because the timing was slightly off. This took care of the issue for about 3 days and then came right back. What do I need to try next? Does this sound like a fuel/air mixture problem. I really don't think it's the transmission after the mechanics work. Let me know if you have any ideas, thanks. It has no other mechanical issues and has no loss of power on the high end, just no acceleration when starting from a stop.
Max
