Q: Vehicle's engine stops turning over when at speed.

asked by on January 08, 2017

At first, the truck was losing power and the engine stopped turning over only when idling. The truck would start back up after sitting for a second and then the engine would stop turning over anytime it idled. I did a full tune -up and for about a week the truck had no issues. Today, while at speed on the highway the engine stopped turning over twice and started back up after a few minutes. The third time, It sounded like it was trying to turn over but didn't and had to be towed. Please assist.

My car has 420000 miles.
My car has an automatic transmission.

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