hey all. tried searching for this topic, but only found stuff for 3rd gen and previous (and the sticky for the google 4th gen search is gone?...)
recently i've noticed that in the mornings, the truck starts fine. couple of cranks, it roars up, and stays in the mid 1k rev range
drive around, everything's fine, then go to turn it off. leave it for about an hour, and when i come back to start it up again, it starts in the appropriate amount of time but will hang around 700rpm and shake the truck a noticeable amount. i can hit the gas pedal and it responds accordingly. this usually goes away within 15 sec or so, gas pedal or not.
at first i thought it was bad gas, as they were changing formulas from winter to summer mix. now that i've put a couple of tanks through it i still notice this behavior
i'm looking for places to start. this is what i'm thinking:
- MAF sensor
- throttle body clean
- new spark plugs (they were replaced about a year ago from originals)
- fuel filter (but i don't want to drop the tank)
anything else i should consider? i'm hoping this isn't indicative of the head gasket going, as this REALLY isn't the time to be spending that kinda coin on that.
again, this only consistently happens on warm starts. even then, it doesn't happen all the time, probably 60-90%.
thanks everyone. hope yall staying safe