Your Onan 5500 generator's fuel pump chatter and dual light illumination indicates a control board communication error triggered by the remote harness connection. This comprehensive guide covers diagnosis, repair steps, and prevention strategies for all common Onan 5500 issues.
Reduce RV slide-out wear with proper usage, seal maintenance, and lubrication. Covers usage frequency questions and storage tips.
Your chassis A/C cycling above 2800 RPM is likely caused by high head pressure from insufficient airflow at highway speeds, low refrigerant despite proper charge, or the PCM cutting A/C during high load conditions - this is normal protective behavior on Ford V10 engines.
Most RV heat pumps draw 12-16 amps when running, well within your 30-amp service capacity. However, you'll need to manage other electrical loads to avoid tripping breakers when the heat pump cycles on.
All headlights out with other lights working points to headlight relay or combination switch failure. Check and swap headlight relay first - if no change, the combination switch is likely failed. Common issue on late 90s Ford chassis.
Dual purpose lithium batteries work for coach use but dedicated deep cycle lithium is better for house banks. Dual purpose compromises between starting and cycling. For RV house batteries, deep cycle LiFePO4 provides better value and cycle life.
P068A indicates an ECM/PCM Power Relay Control Circuit malfunction in your Ford V10. This typically involves a faulty power relay, damaged wiring, or ECM issues causing engine stalling and starting problems.
Replacing an F53 rear pinion seal requires specialized tools including a 1-inch drive socket, torque multiplier, and seal pullers. This is a complex 6-8 hour job that many RV owners should consider having done professionally due to the precise torque requirements and driveline balancing concerns.
Furnace that lights for 5-10 seconds then shuts off is classic flame sensor failure. Clean the sensor with steel wool or emery cloth - do not use sandpaper. If cleaning fails, replace the sensor. Located near burner, single wire connection.
V10 surging with air/fuel codes often has cheap fix - vacuum leak, intake gasket, or exhaust leak. Do smoke test or spray test before replacing more expensive parts.
Ford V10 coil bolts fit better with 9/32" SAE wrench. Access cylinder 3 by removing doghouse and working from inside RV. Use wobble extensions and swivel sockets for tight areas.
Replace RV tires at 6-7 years regardless of tread condition. Internal rubber degradation is not visible but increases blowout risk. At 7 years with 2018 DOT codes, your tires should be replaced before extended travel.
Ford V10 2-valve engine oil pan gasket is not reusable - must replace. Unlike 4R100 trans pan rubber gasket which can be reused. Use Fel-Pro or Motorcraft replacement with RTV only at corners.
Your unprogrammed Ford F53 transponder keys will continue working indefinitely, but they lack anti-theft security features. Programming adds immobilizer protection but isn't required for basic operation.
When your RV A/C won't start after a capacitor change, check for blown fuses, thermal switch reset, proper wiring connections, and overheated compressor lockout. The compressor may need time to cool down before restarting.