Wreckless1
New member
I am having a major problem with one of my 2007 D6 engines. The transmission will not go into gear nor can I increase the rpms. The EVC codes indicated a bad secondary solenoid. We replaced both solenoids on the transmission but still would not go into gear. The volvo mechanic then tried switching the computer from that engine with the other engine and when we could get it engage, which was only occasionally, it would be reversed, i.e. putting into forward put it into reverse and vice versa. The trans is a zf hurst, 80AE. I have had several mechanics working on this with no solution. They have tried reprogramming to no avail. I first had the problem after leaving the marina and suddenly the engine was in neutral. I played around with it at the dock before any mechanics looked at it and several times I got it to go into gear but it was reversed, that is putting it into forward caused it to go into reverse. That was before trying to switch out the computer. All the mechanic has been able to tell me is that some sensor is telling the computer there is a major problem and not to allow it to go into gear. I also am unable to increase the rpm above idle. Complicating things is that the boat is in Mexico. I am looking for some experienced input as to what to check or do. I would hate to buy a new computer without being sure that is the problem.