Need truck advice

Also on the shutting down issue, I had a Jeep of about that same vintage, and the oil pressure sending unit was defective and it would shut the motor down, I also had a Dakota that the temp sensor switch went bad and would shut everything down, cheap
$15 dollar fix from napa on both vehicles.
Pay attention to the gauges when you fire it up. If the oil pressure is low or temp reading high, change the sensor.