My car just started doing this a few days ago.
When I let it sit for a while, like 12+ hours, when I crank it again, it will not idle on its own. It's almost as if the fast idle isn't activating (not sure on the technical term there). It runs fine as long as I keep my foot on the gas pedal. After about a minute or so of warming up, it runs perfectly fine, like absolutely nothing is wrong. I can cut it off, and come back to it within several hours, and it cranks up and idles fine.
I checked all the stuff under the hood, and everything looks fine. It is actually pulling a little better vacuum than usual, at about 21-22 inches versus 20-21. It still runs great at WOT.
I thought maybe it was because I have the idle set at 700 in my programmer (exhaust sounds better to me), so I moved it up to 900, but that didn't change anything other than the speed it idles at after it gets through the little hiccup.
Could it be the cold weather? It's been in the 20s here the last few nights. I wouldn't think it would be because I've never had it do this before, and it's definitely been in colder weather with no problem. Plus I didn't think fuel injected motors had problems in the cold like old carb motors do (that's exactly what it's acting like, an old carb motor on a cold morning).
Any ideas? It's not causing any problems, but is kind of annoying and I'm afraid it could be a sign of something else wrong.
When I let it sit for a while, like 12+ hours, when I crank it again, it will not idle on its own. It's almost as if the fast idle isn't activating (not sure on the technical term there). It runs fine as long as I keep my foot on the gas pedal. After about a minute or so of warming up, it runs perfectly fine, like absolutely nothing is wrong. I can cut it off, and come back to it within several hours, and it cranks up and idles fine.
I checked all the stuff under the hood, and everything looks fine. It is actually pulling a little better vacuum than usual, at about 21-22 inches versus 20-21. It still runs great at WOT.
I thought maybe it was because I have the idle set at 700 in my programmer (exhaust sounds better to me), so I moved it up to 900, but that didn't change anything other than the speed it idles at after it gets through the little hiccup.
Could it be the cold weather? It's been in the 20s here the last few nights. I wouldn't think it would be because I've never had it do this before, and it's definitely been in colder weather with no problem. Plus I didn't think fuel injected motors had problems in the cold like old carb motors do (that's exactly what it's acting like, an old carb motor on a cold morning).
Any ideas? It's not causing any problems, but is kind of annoying and I'm afraid it could be a sign of something else wrong.