Pre-ignition on slight acceleration

I have an 08 with just over 1k. Just today I started her up and let her warm up for over a minute and then started to drive. Pulling out of the parking space, I was very gentle on the gas pedal and it suddenly felt like it wanted to stall then it started to idle really rough. I pulled over, shut her off and re-started her and it was still idling rough. The acceleration from stop seemed sluggish. After a few minutes, the rough idling stopped and now it runs fine. I've been putting in 87 octane Exxon gas since I got it new a month ago just to try to save a few bucks. Could I be having this problem on a new truck with low mileage already? Any other suggestions?

 

If this is an on-going thing, then I'd consider switching grades or at least brands of gas. But if the pinging just started one day out of the blue, I'd suspect you got a tank of dirty or stale gas' Personally I'd run a can of SeaFoam through it, and then a tank of premium gas, and then go back to 87 octane & see what happens.

Once in a while you need to clean the throttle plates and throats too. They build up soot that affects your airflow, and particularly at very light throttle openings.

I use Techron sometimes because you can get it in cases at Costco, but SeaFoam is available at Wal-Mart now, and it is much better IMO.

 

No, no engine light.

After a few stop and go's, the rough idling stopped. I popped it into neutral and the idling smoothed out. But once I popped it back into drive the rough idling came back. Weird. I'll pick up some seafoam just in case this happens again.
Thanks for your help.

 

could just have been a small piece of trash in one of the injectors like chris said, or it may have been a small piece of trash that touched on of the sensors for a couple of seconds. you probably dont have anything to worry about though.

 

3 yrs of mid-grade or better, went back to 87 for last 3 fill-ups. Drive same trips, same commute. Lost .3-.4 mpg. Exact same thing I saw in 05'. Motor not quite as smooth, can hear the pre-ig at low rpms, climbing steep grades.

Reason I tried, the price difference used to be .10 per grade. Last few months, its been .25-40 mid, .35-50 premium. So depends on price of fuel grades if its worth it.