Not sure if this topic has been posted in here but I couldn’t find it. So when I start my car up (‘91 Ls400 UCF10)from a cold start it idles barely at 200 rpms and rising steadily as it warms up, At operating temperature it currently idles at 400 rpms, When in gear it idles at about 200 rpms also, Other than that it drives good and has no signs of being sluggish or down on power