04 GX470: Crank-No Start (1 Viewer)

[itgogitrev]

My 04 has developed a crank-no start issue. It’s had a fair amount of maintenance performed over the past 2 years. Below is everything that’s been checked/repaired

- New fuel pump + strainer (08/2025)
- Battery replaced (04/2025)
- VCGs, axles, plugs checked (03/2025)
- Timing Belt + water pump (07/2023)

No codes are shown in my cheap handheld reader. Tank has 20+ gallons in it. Engine will start briefly with starting fluid, but dies in a few seconds. Fuses for EFI have been replaced and relays have been swapped; no change in starting.

I can’t imagine a fuel pressure regulator would cause it to not start at all, am I wrong? Which pins in the relay need to be jumped to check to make sure the pump is functional? I tested both the old and new pumps with 12v and both work; however, the old one was noticeably noisier.

Thanks in advance for any help you can provide!

 

[fjc-man]

When did the no start issue first happen?

 

[Stonefoot72]

Have you tried a different key? Could be a simple immobilizer chip issue.

 

[itgogitrev]

fjc-man: Started in mid July after it sat for about 4 days in a heavy rainstorm. It wouldn’t start for a few days, then it intermittently started 1 day, then it was fine until last week. Coincidentally, I hadn’t driven it for about 4-5 days.

Stonefoot72: I tried both keys and there is no change. One has a relatively new battery as well.