I have been working on this car with no luck. Any thoughts? 1994 Buick 3.8 166K miles, new tps, new fuel filter, fuel pressures tests OK (37psi and jumps to 47 when the vacuum is removed from fuel regulator), engine idles fine and will readily start. No code info as this is the transistion year and it is neither OBD I or OBD II. When the accelerator is depressed and at estimated 14 to 16 hundred RPM the engine struggles briefly and dies. Engine will restart immediately and symptons will repeat. Car can be driven if the accelerator is gently depressed, when running the engine is smooth and quiet.