Idle Surge
 

My check engine light comes on randomly all year long. During winter, my car runs perfectly fine. But as temperatures start to warm up, around mid 60s to higher I start to experience an idle surge which also makes my engine rush when I start, and seems to give a little extra pep that comes and goes when I cruise. Any idea's what this most likely is?

RE: Idle Surge
 

throttle position sensor possibly, go get the code read.