Hey gang. Been some time since I've been out here and thought I'd share something my Astoria Freightliner chassis did this past trip.
Coming out of Laughlin, NV this past weekend climbing HWY 68 (long climb), my low coolant light came on. I knew it wasn't that low as I replaced the turbo last summer and replaced the coolant, but apparently needed another 24 ounces so on steep hills the sensor still has fluid sensed. (Amount I added later to stop the issue
Anyway, since Columbus (bus name
) temp was running normal at ~198 degrees while climbing and there was really nowhere to stop, I kept climbing. After ~ 5 min the stop engine light & buzzer went off as well. Still nowhere to stop, I kept going looking for a place to stop. Couple minutes after the Stop engine alarmed and I hadn't stopped, the coach went into limp mode and wouldn't allow the RPM's to climb above ~2k. I finally reached a point where the road leveled out enough to get fluid back on the sensor and that light went out, then couple minutes later the stop eng light went out and limp mode went away.
Columbus never overheated and actually stayed ~190 in limp mode. I was able to stop, let RV cool, add the 24 ounces of coolant (knew it didn't need much and had DW watch resivour while I added) and then took off after the next steep hill.
No issues on the next big hill as I knew that sensor would stay covered.
Not sure if others have seen this, but I was impressed how the coach seemed to monitor the issue and temp and allow the rig to keep climbing as long as the temp stayed below 195. I say this because it felt like I would get some power back when the temp went below 195 and then back into a limp mode once it hit 195. Engine never got hotter then 199 the entire trip (101 degrees outside temp climbing) so I was very happy with the performance. Also learned my resivour full line is off by ~1".