Truck runs normal at 0 to45 mph with rpms below 2000. As soon as I accelerate with rpms over 2000 engine sputters and dies. After 2 or 3 minutes engine starts right up again and runs fine till I accelerate over 2000
+ rpms and then dies again. I took it out the other day and drove it 50+ miles, accelerating slowly,keeping rpms under 2000 and it ran normal,but as soon as I stepped on the gas to speed up it dies.
I appreciate any guesses