I recently bought a 99 S80 that was having problems with the transmission, after having the codes pulled it seems like both solenoids 1 & 2 are shot as well as the torque converter solenoid. I know from reading previous posts that there are a total of 4 in there and I would like to replace them ...

I went through and checked vacuum lines and everything seems to be in order. One new thing I found is if I unplug the IAC it makes zero change at all, but when I take the hoses off it kills the car. Think the IAC is stuck at wide open?

I did that and it essentially acts the same as it did before I unplugged it, doesn't improve during driving and it screws up the idle even worse than it is now if the MAF is unplugged.

I recently acquired this 95 850 from a guy who was going to sell it for scrap, I have managed to piece everything back together to make it a good little car but I am still having one major issue which is this stumbling / lack of power issue. Symptoms - Stumbling at idle, misfire and loss of power wh...