[Jimmy Olsen]

Originally Posted by phewop118

This morning I started my car and the engine felt bad, like it was misfiring. No SES light. I figure, I'll restart it, then it'll give me a light or run smooth. So after restarting it, SES is flashing, telling me for sure it was misfiring. So I shut it off, gave it a few minutes, and turned it back on. It was fine then, running smooth, no SES light. Could this be spark plugs (I have 80,000 miles on it, original plugs - 01, so 3.5L)? Or does it sound like I have other problems brewing. I was afraid to drive it, as I was worried it might start misfiring in the middle of my 70 mile morning drive and I want to minimize damage. Just as an afterthought, I wonder if the outside temperature has anything to do with it. This morning it was 25 degrees F, while for the last few weeks it's been well above freezing. Any thoughts?

Have you added any gasoline anti-freeze recently.