The ignition relay on a 1988 Ford E350 (Fleetwood Tioga base) is typically located in the engine bay fuse/relay box on the driver's side firewall, or in a separate relay box near the battery. Some models may have it mounted on the firewall or inner fender well.
Essential guide for Ford E-Series Class C motorhome chassis covering suspension, maintenance, and common issues.
1990 Tioga E-350 no start - check battery, fuel pump operation, spark in that order. Listen for fuel pump hum with key on. Check inertia switch reset button. Common failures are fuel pump relay and ignition module.
The inertial fuel shutoff switch on a 2006 Fleetwood Tioga is typically located either in the driver's side kick panel, under the dashboard near the brake pedal, or in the engine compartment near the fuel pump relay box.