Coolant was changed last winter durring a radiator replacement.
Tuesday the 29th it wouldn't start in the am. After work put noid lights on coil and injector harness. Also fuel pressure gauge. Noid lights flashed but no fuel pressure.
Pulled pump relay and jumpered connections. Got pressure...
Drove with fuel pressure gauge. Pressure is stable during stumble. I replaced both battery cables and cleaned all ground connections to chassis and frame under the hood. I replaced the fuel injectors too. So far it isn't throwing codes and runs much better. Will run a couple tanks of premium and...
Truck runs pretty good for 321,000 miles. Slight stumble up hills until downshift occurs. May have some carbon build up on the valves too. Will run a couple tanks of premium through it and update again.
Got the new cables on. Cleaned the under hood grounds. Runs much better. Injectors are going in as soon as it cools enough to be compfortable to work on it.
Yard work took me away from the truck today. Putting it up on jack stands in the AM to inspect that harness.
The trans fluid is still red and smells fresh.
Thank you. I have new battery cables coming. They are very corroded and I will be able to clean all the ground connections durring installation. Just recently the OD off light started flashing. When I put it in Neutral and shut it off then restart, while driving, the OD off light stops flashing...
Can anyone tell me where all the chassis grounds are located? 99 EB with 5.4 4x4. With the stalling and multiple codes of different areas makes me think I have a ground issue. Crawling under truck and tracing wires today.
Friday morning it stalled and wouldn't start right away. Barely had any pressure when I pressed the fuel rail valve. Let sit a few minutes and it fired up. Had 1/8 tank. Thinking pump damaged from ethanol. Replacing fuel pump and filters this coming weekend and will post results.
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