For the last three years when the weather begins to turn colder (like now) my Sentra's engine will start right up but immediately rev up to an ungodly RPM. I either have to shut her off or let the clutch out with the brake on to put a load on her (to bring the RPMs down). Most of the time that'll work but the "racing" can occur later in the drive (like at a red light).
99.9% of the time and all during warmer months it runs like a Singer sewing machine. It's a one owner and has never had any carb. work done or any other major work for that matter.
I feel like there is some temperature affected component that is not functioning properly. What do you think?