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.
Keep your RV generator running reliably with this comprehensive maintenance and troubleshooting guide for Onan, Generac, and Cummins units.
Hard starting often fuel pressure bleed-down from check valve or injector. Test by cycling key to build pressure. Use gauge for definitive diagnosis.
Protect your RV from freeze damage with this comprehensive winterization and de-winterization guide.
F53 460 timing marks on harmonic balancer viewed through timing pointer. Clean and mark with white paint for visibility. Use timing light at idle.
Even with disconnect switches engaged, phantom loads and battery self-discharge can drain RV batteries during storage. Installing battery maintainers, using master disconnect switches, and addressing phantom loads will solve this issue.
Essential guide for Ford E-Series Class C motorhome chassis covering suspension, maintenance, and common issues.
Large unused plugs in Ford E450 engine bays are typically for optional equipment like auxiliary transmission coolers, engine block heaters, or upfitter switches that weren't installed on your specific RV configuration.
Your 2015 Vista's V-10 pulsing issue that started after mountain passes in Montana is likely caused by a failing mass airflow sensor, throttle position sensor, or fuel delivery problem. The "Fault received from External Node" code suggests a communication issue between engine management and instrument cluster that may be related.
Yes, you're absolutely on the right track - your testing clearly points to a PCM failure in the ground switching circuit for the drivers side coil bank. The fact that you have +12v but no ground pulse during cranking confirms the PCM isn't completing the circuit.
On the Ford V-10 engine, the temperature sending unit is located on the front of the engine block, typically on the driver's side near the thermostat housing. It's a brass or plastic sensor with a single wire connector.
You can access cylinders 1 and 2 on the E450 V10 by carefully flexing wire harnesses, using flexible extensions, and working from underneath the coach. Remove the engine cover and air intake box first for better access without disconnecting major harness brackets.
The Onan 5500 can be tuned up with quality aftermarket parts when OEM parts are unavailable. Use NGK 3432 spark plugs, Wix 57358 oil filter (not 57398), and zinc-containing oils like Rotella T6 for optimal performance.
Triple E built quality coaches in Canada. At 24 years old, focus on this specific units condition rather than brand reputation. Critical inspection points: water damage, engine hours, service history, roof seals. Get professional NRVIA inspection before buying.
Generac oil drips after breather hose replacement suggest other issues: check oil level, breather valve, hose routing, and valve seals. Clean engine and observe where oil first appears.