Your 1993 American Eagle's Onan generator producing only 12-15 volts indicates a faulty rectifier bridge (part CR21) or suppressor (part RV21). The correct replacement parts are 305-0696 for the rectifier bridge and 305-0703 for the suppressor.
AquaHot cycling every 15 minutes at idle is not normal. Possible causes include heat loss through stuck zone valves, thermostat issues, or circulation pump running when it shouldnt. Check that all zone valves are closed and pumps are off when no heat is called for.
BlueDriver, OBDLink MX+, and FORScan all work with Ford E450 V10 motorhomes. FORScan offers the deepest Ford-specific diagnostics but has a learning curve.
5 Star X4 tuner improves V10 throttle response and transmission shift points noticeably. Fuel economy gains are modest. Best program for RVs is Tow mode. Worth it if you want better drivability.
If total repairs exceed 50% of replacement cost with problems continuing, replacement makes sense. Refurbished Onan from reputable source with warranty is good option. Get thorough diagnosis before deciding - intermittent issues can often be isolated.
Furnace rumble and backfire indicates air-fuel mixture problems. Check gas pressure at manifold, deep clean burner by soaking, and inspect heat exchanger. Delayed ignition from weak spark or dirty igniter also causes this. May need replacement on 20+ year unit.
For a 2002 Born Free with Suburban SF-30 furnace, choose the complete furnace replacement over just the core. While cores cost less, complete units include updated components, better reliability, and easier installation for DIYers.
Your Suburban SW6D water heater likely has a combustion air intake blockage or ECO switch issue preventing proper airflow. The problem occurs because the unit needs adequate combustion air to maintain the flame safely.
Furnace blower runs but no ignition usually indicates sail switch, igniter, or gas valve failure. Check sail switch for debris first. Watch for spark at igniter. First run of season may need multiple cycles to purge air.
Running generator while sleeping can be safe with working CO detector and proper precautions. Close exhaust-side windows, check wind direction, and ensure CO detector functions. Many RVers do this safely.
Your 1989 Ford Tioga's 460 EFI system is experiencing classic symptoms of fuel pressure loss, likely due to a failing fuel pump or clogged pickup screen in the tank. The dead battery jump may have damaged the fuel pump relay circuit.
Animals access generator intake for shelter and warmth. Install fine mesh screen over intake while maintaining airflow. Use deterrent sprays and clean with enzyme cleaner.