boggin down after start

[tupeloranger4x4]

i have a problem that only happens maybe once a week.when i start the truck it seems to idle low and then bog down when i hit the gas.if i hold the throttle for a second it will stick around 1300 rpm and then go down to about 900 like normal and then is running fine

 

[xgenralxleex01x]

check the lines going to your air box/ filter one maybe loose, or you mass air sen. maybe loose.

 

[tupeloranger4x4]

all my hoses are tight.i changed the oil today and noticed a bit of coolant sittin on the top of the thermostat.could a coolant leak cause something like this