So, a little update. Today we ended up leaving Bryce and travelling to Barstow. We had intentions of getting to Palm Springs but had a road hazard incident that you can read about here.
http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/28008711.cfm Alls well on that front.
However, this is what I noticed on the scangauge while on the road.
1. Max boost on the biggest hill was only about 17 PSI. I was expecting around 25 to 27. Yes, No???? I suspect this is a result of the derate caused by the check engine light.
2. For whatever reason the voltage jumps all over the place from 12.5 to 13.6 and all in a matter of a minute...in other words, wild swings in a matter of seconds. Normal??? To add to this, when I pulled into Barstow I took a few minutes while fueling to load test the batteries. Alls well. Quiescent around 12.7 volts and held up well under 20 second load test. (Thats when the meter gets too hot :) ) Also when coach is running battery output reads a solid and consistent 13.9 volts so I think the alternator is fine. Tightened down all connections on the battery. Check engine light still on.
Question. For those of you with the ISC350 or ISL400, when the key is in the on position but motor not running does the check engine light come on?? Ours does. Almost like a sensor is reporting a problem BEFORE the motor is started.
Will call scangauge tomorrow re codes....after we get to Palm Springs. Also hope to check ECM grounding at that time.
Comments welcome. Overall, life is good, had a nice day on the road, took the hills one gear slower and even the slow trucks passed me. Got a little exercise (or at least Angela did) changing a trailer tire and overall we enjoyed a nice sunny day. All tucked in to a Travel America parking lot for the night. Tomorrow is a another great day.
J and A
