Not sure if this is a weather climate thing or not but i've been home in Philly for a few months now from San Diego and on a couple occasions my car idle rpm will raise on its own up to 1500rpm.
Some scary ****, my foot is no where near the pedal. All I can think of is the air temp being so low and cold, unless my throttle position sensor is acting retarded.
San Diego temps never went below 60*, so I'm not sure if this is a air temp thing(don't think it is though) or a mechanical issue.
Anybody experience idle rpm just raising on its own? I personally never seen it happen other than cold mornings on cold start in open loop, which then settles back down as it should