2015 5.0 shaking violently after cold start and smell of gas

[kaigoss69]

Like title says, turned off and re-started and it runs fine. CEL is on. I suspect spark plugs...haven't been changed and car has 110k miles. Anything else I should check?

thanks!

 

[lobsenza]

Could be the crankshaft position sensor. That caused a similar issue with mine.

 

[dcrob95]

Like title says, turned off and re-started and it runs fine. CEL is on. I suspect spark plugs...haven't been changed and car has 110k miles. Anything else I should check?

thanks!

I think this is something that can just occasionally happen without any real problem being present. While under warranty around 5 years ago I took mine to the dealer for this. I Pulled code that was something related to injector/misfire. They told me they replaced an injector and it was fine for a very long time. Since then, I've had this randomly occur 5-6 times, always at start up. It will run rough, slight smell of gas, CEL comes on. If I turn off the car and restart, it clears up, runs smoothly and CEL goes away. It most recently happened a few weeks ago. I never bothered to pull the code or clear it and as it was in the past, car is running perfectly. I'm currently at 152k miles and not worried about it

 

[Markymark]

I think this is something that can just occasionally happen without any real problem being present. While under warranty around 5 years ago I took mine to the dealer for this. I Pulled code that was something related to injector/misfire. They told me they replaced an injector and it was fine for a very long time. Since then, I've had this randomly occur 5-6 times, always at start up. It will run rough, slight smell of gas, CEL comes on. If I turn off the car and restart, it clears up, runs smoothly and CEL goes away. It most recently happened a few weeks ago. I never bothered to pull the code or clear it and as it was in the past, car is running perfectly. I'm currently at 152k miles and not worried about it

Yes, this too has happened to me once. And occasionally in the last 5 years of ownership, I will be vigorously accelerating and the CEL will come on for a misfire. But that's all. I've never done anything about it. 120K miles on my 2015 5.0.