it would have been good to have scanned the computer to have goten the trouble codes before all this work was done..there are still a few tings that can cause this,,,it would seem you may be loosing injector pulse,,,
1-the ignition module
2-the pick-up coil in the distributer,,either could cause a loss of injector pulse and still have a spark on the plugs....also
the problem here may be the map sensor,sense it seems to run longer with the ect disconnected...
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|1994 Chevy Truck K 2500 Truck 4WD V8-350 5.7L|
|Manifold Pressure/Vacuum Sensor Locations, Components: Engine Control Module - ECM|
|MAP Sensor Location|
The Manifold Absolute Pressure (MAP) Sensor is located on a bracket, mounted to the intake manifold, on the passenger side rear.