Michael A 2
Active Member
I've been having morning start up and idling issues 80% of the time when I start the engine in the morning. Idling would be rough ranging from 800 rpm to 350 rpm as if it was about to stall. But I give it gas and it would go up to 1100 rpm and stay there until it goes back down to 750 rpm after a few minutes. After that, no more symptoms or idling issues throughout the day. Was wondering what may be causing this? Bad fuel filter? Bad fuel pump? Changing spark plugs? or a whole tune up? Truck has 85000 miles on it. Any thoughts or feedback would be highly appreciated.