My 99 S80 2.9 surges upon acceleration and also at speed. An auto parts store code reader read that "bank one system to lean" and "bank two system to lean". I cleaned the ETM a while back so I don't think that’s the problem, but what’s the deal with bank one and two on an inline 6?

Jimmy
I replaced my heater core on my 99 S80 and the only way to do it is to pull the dash-big job! if you just replace the o-rings you can do it if you can stand on your head :). It isn't impossible but it's not easy. They do fail after a few years. The spring clips are tough to get out and in so ...

I just cleaned the ETM on my 99 S80 2.9 yesterday. What a mess, the car had issues at idle for some time but where the ETM was located threw me for a loop. I finally took my trusty mechanics mirror and saw the clamp for the air inlet hose and said I could do this. The car seems to run better but I ...

I don't know if Volvo uses a ballast but that shouldn't change the function of the other controls. The next step I'd try is to pull the heater control panel and see if the wiring is in place. I'm just guessing but there could be a relay in the fuse box under the hood. I don't know why it would go ...

Hey Thanks, I have the same problem. I'll check it out!!!!!!

Does your fan motor work? Any time you work around the electrical system you should disconnect the battery. Looking at my S80 you either left something disconnected or you need to check both fuse boxes. There's one in the cabin and one under the hood. A long shot is that all the bulbs blew out but I ...

My service trans light came on with 160k on my car and I changed the fluid and filter and would like the light to go away. The Trans works great, always has. When I called the dealership before I did the work they said I didn't need to change the fluid (life time fluid?) but needed a soft-ware ...