Cuts out when accelerating

[PlayingWithTBI]

Fuel pressure is at 6psi

That's way too low, it s/b 9 - 13 PSI according to GM. Closer to 13 is better. If you find you need to change the fuel pump. get an EP381 out of a 96 Vortec truck, it's a direct swap.

 

[Schurkey]

It’s obd1 how do I get live data?

Use an OBD-1 SCAN TOOL instead of a "code reader". I detailed what info is available on my '88 K1500 in a post on another forum. Post #15, but the back-story is kinda humorous.

Any "real" scan tool can do this, going back to 1980 1/2 computer-controlled GM except for maybe the T-body (Chevette junk.) Older vehicles have less data available, and little-or-no bi-directional control...but all sensor data should be there.

www.automotiveforums.com/vbulletin/showthread.php?t=1146067

94 k2500 no low end power and horrible fuel mileage - Automotive Forums .com Car Chat

94 k2500 no low end power and horrible fuel mileage C/K

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Fuel pressure is at 6psi

As said--way too low (IF your gauge is accurate.) Assure that the pump is being supplied with proper voltage by testing the voltage AS CLOSE TO THE PUMP AS PRACTICAL. Generally, this is at the most-rearward electrical connector before the harness goes up 'n' over the tank. The pump MUST be RUNNING when you check the voltage.

Low voltage can cause low fuel pressure. So can a partially-plugged fuel filter.