New to this motorhome, 1999 class A diesel pusher 350 cummins. A couple times on hard acelleration there is a yellow warning light comes on dash. What is that for?
Everyone here seams to think its air flow. I had a 1998 diesel that would flash an amber light (water in fuel) for just a second or two when ever I got hard into the throttle. Never did figure out why because my fuel and filers were clean. I blamed it on the low sulfur fuel I had to use but never really knew why.