||04-14-2013 12:42 PM
Rough idle only on startup w/ Forenza
I have a 2006 Forenza. It is exhibiting the following symptoms:
1) Usually on startup, it idles rough for about 20 seconds. Then it runs fine after that, until it sits for a while. It's been doing this for about a month. It only happens if its been off for at least several hours. But sometimes it doesn't do this at all for days at a time. Then it starts doing it again. No engine warning lights come on at all.
2) The problem is getting progressively worse. Meaning that, although it is still intermittent (doesn't always happen), the idle is rougher and lasts longer. It started out only idling rough about 5 seconds. And doesn't need to sit as long in order for this to happen.
3) If I start moving while it's still idling rough, it kind of bogs down as I apply gas, but after the 20 seconds, it runs fine. It almost seems like it has excess oil or gas inside the engine that has to get worked out before it runs well.
I appreciate any feedback.