If it is anything like the diesels, it is a piece of cake DIY to take out and clean off. In the very least some security knowing you're not throwing money at the thing. Sounds exactly like bad contacts in the fuel sender if you ever had gunk in the tank.

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TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth