Hello, I have a 2008 Nissan Versa S 1.8L 4 cylinder, I have recorded multiple videos of my car doing this weird rpm drop/struggling to idle when i start my car after it’s been sitting for hours. I will wake up in the morning and I go to start my car and when I start it, it will crank and turn over but once it starts sometimes the rpms will drop suddenly and it seems like it’s struggling to get a steady idle. The only way to really explain is to show you a video, i’ve created a montage and put all the videos I recorded into one video. I don’t know if you accept links but if so here is the YouTube video of it happening on multiple occasions. https://youtu.be/Z_MyFmYL89M I under if you can’t watch it/ open the link but this is the best way for me to show you the issue first hand. Thank you for responding and taking your time to watch it.
I didn't see it struggling to maintain idle. You kept turning it off within a second or two of starting it.
But if you find it's struggling to "cold idle" the most likely reasons are a faulty IAT or ECT sensor (you can use a scanner to see if that's happening), or a dirty IAC valve or dirty throttle body.
