Community Forums

denochs · 10-22-2009, 04:46 PM

We have a 10K genset in our 03 American Eagle. The Onan has a fault code of 24 - Coolant level/temp. After running approx. 5 minutes it shuts down. I can override the code just by restarting after verifying it is full and not overheating.

Can anyone refer me to information that will show where these sensors are located so I can replace them? Also, it now has over 1200 hours on it and the manual calls for replacing the radiator cap at 1000 hours. Could that cause the same code? I'm assuming the o'rings wear out and will not allow pressure to build up in the cooling system.

**RV Wizard** · 10-23-2009, 02:48 AM

Most likely the temp sensor is bad and is located at the upper radiator hose/thermostat housing on the engine.

denochs · 10-24-2009, 04:59 AM

Thanks Mike, any thoughts on the radiator cap? Does it really have to be replaced at the 1000 hour interval? Could it cause the same code?

**RV Wizard** · 10-25-2009, 02:29 AM

Replacing the radiator cap would not hurt but it probably is not the culprit in the 5 minutes you say it goes into fault. It certainly would be worth a try. If you find that it improves slightly, you may want to drain, clean and flush the cooling system and refill with fresh 50/50 propylene glycol and distilled water.