Recent content by tnewman1

T
1990 Sierra Baffled

Not surebif this helps, but when it cuts out, I put it in neutral, turn it off, turn back on, and put it in gear, strong as ever. Then a minute later, starts up again.
- tnewman1
- Post #6
- Nov 26, 2023
- Forum: Engine Performance + Maintenance
T
1990 Sierra Baffled

I don't see any wire trauma but not sure what might be in the wiring harness.
- tnewman1
- Post #5
- Nov 26, 2023
- Forum: Engine Performance + Maintenance
T
1990 Sierra Baffled

Thanks for your reply. Seems to start happening after its warmed up. Happens upon pressing accelerator about 1/3. Seems to occur on hills or flat. Shut it off and restart it, seems to run okay for a couple minutes then cuts out. Idles great. And runs strong when running. Hope this helps.
- tnewman1
- Post #4
- Nov 26, 2023
- Forum: Engine Performance + Maintenance
T
1990 Sierra Baffled

1990. Gmc. Sierra 1500. 350. 5.7 v8. Idles great. Runs strong. Then cuts out like its starving for fuel. So far I have: Dropped tank and cleaned it. New fuel filter. New fuel pump. New ECM. New Map sensor. New ignition control sensor. Vacuum lines good. No shorts in the wires that I can see...
- tnewman1
- Thread
- Nov 25, 2023
- Replies: 6
- Forum: Engine Performance + Maintenance