Anyone run into this? 2011 MP7 Granite dump is going into “limp mode” and shutting down only when loaded down. Oil pressure sensor sounds, let’s me limp to a stop. Oil pressure gauge reading fine. Have replaced everything related to oil and pressure. All sensors, valves, O rings, etc. Did find zip ties from under the cover had worked their way into oil pan when it was cleaned out and bolts checked/filters changed, etc. All new 15W40 and all new filters. Nothing happens if dump bed is empty, which is how the guy was able to sell it to me this way, I guess. Main mechanic has tried everything he knows. Local Mack dealer service guy has no idea. Called two other mechanics to see if they’d heard of it before, no luck. Any other ideas? Mack center is booked out three weeks. Can’t fall that far being a small business with no extra truck.
