John Loper II
4e52c91c9b
Diagnosis: Removing forward O2 sensors immediately restored full power. Test proved the catalytic converters are severely restricted. Updated: - README.md: Added confirmed diagnosis section - progress.md: Marked diagnosis complete, updated next steps
1.7 KiB
1.7 KiB
2005 Ford E350 - Maintenance & Repairs
Vehicle Information
| Specification | Value |
|---|---|
| Year/Make/Model | 2005 Ford E350 |
| VIN | 1FBSS31L35HB18098 |
| Engine | 5.4L V8 Triton SOHC 2-valve |
| Horsepower | 260 HP @ 4750 RPM |
| Torque | 320 lb-ft @ 3000 RPM |
| Transmission | 4R100 Automatic (4-speed) |
VIN Decoder
https://www.decodethis.com/vin/1FBSS31L35HB18098
Active Issues
RPMLimitPowerIssue 🔍 INVESTIGATION
- Symptom: RPM won't exceed 3000, no power under acceleration
- Severity: HIGH - affects drivability
- Status: Under investigation
- Work Already Done:
- Spark plugs changed recently
- TPS replaced recently
- Common Failure Points:
- Mass Air Flow (MAF) sensor
- Fuel delivery (fuel pump, filter, pressure)
- Exhaust restriction (catalytic converter)
- Throttle body issues
- Ignition coils
- PCV valve
- Vacuum leaks
Maintenance Schedule
Every 5,000 miles
- Oil and filter change
- Inspect brakes
- Check tire pressure
Every 15,000 miles
- Air filter replacement
- Cabin air filter replacement
- Rotate tires
- Inspect suspension components
Every 30,000 miles
- Transmission fluid and filter
- Brake fluid flush
- Inspect spark plugs
Every 60,000 miles
- Coolant flush
- Fuel filter replacement
- Inspect belts and hoses
Every 100,000 miles
- Ignition coils replacement (recommended)
- Transmission flush
- Differential fluid
Notes
Maintenance Log
Recent Work
2026-03-XX - TPS replaced
- Worked on RPM limit issue
- No change in symptoms
2026-03-XX - Spark plugs replaced
- Standard maintenance
- No change in symptoms