So, I still haven't replaced the solenoid, 40k miles later, and now it's December and cold. That means I have 1st and 2nd gear back for about 10 minutes after cranking it up. Why does it shift correctly when cold and not when warm? My fluid is certainly burnt and needs replacement desperately. Shoul...

My 850 will use 1st/2nd gear fine when it's cold, but will not shift into low gear once the tranny is warm. It does show the S1 solenoid code, but why would the electrical solenoid work cold and not warm? I don't want to throw parts at it if thicker fluid is all I need.

Thanks, Lee! Glad I asked before I tried any grandiose projects. The 96 is still complete, just parked, so looks like #1 is still the best idea. I have to do it the first week of May, because Florida comes the next week. Back to putting the headliner in now. I hate to put it back together without ne...

94 850 Turbo automatic wagon has a s1 fault. It is fine when the tranny is cold, but as soon as it warms up, the solenoid fails and I'm without first and second gear. It's pitiful. It has well over 250,000 miles on original engine, and AW 50-42 LE trans. I have a 96 850 N/A automatic sedan that I fi...

I, too, am showing a A1-122, open circuit. I took it to my Volvo guy, who read the code, tried to force activate the S1, but couldn't. His diagnosis is replacement. Problem is, I just bought this car, and I have the service records that show the S1 was replaced not 6 months ago, along with a transmi...