Issues with 87 tbi 350
Its in a k5 blazer and the symptoms are as follows: Crank up is fine and you can feel real power and torque the first few miles. After you let off the gas and coast the service engine light comes on and she feels like she has about half the power. Pulling my little aluminum boat was pure embarrassing on the freeway. A year or so ago I made a genuine attempt to clear it up and I changed fuel pump, filter, rotor and cap, all plugs, and wires. Still doing it!