850 transmission with battery dying

upstate NY · Post by **upstate NY** » 26 Dec 2010, 16:27

I went to start my 95 850 wagon, battery was dead so I jump started it. I put it in drive and the acceleration was sluggish only going a few feet. I then put it in reverse and it felt like the transmission or axel slipped, producing a jerking back up. I know I need a new battery because the car won't even idle for longer than a few minutes without the jumper cables still connected. Here is my Q. Can loss of Battery power or a bad battery affect the Transmission in the above stated problem I have???

Post by **jblackburn** » 26 Dec 2010, 17:22

It could cause the transmission solenoids to not activate correctly, yes. Many parts of these cars are extremely sensitive to having the correct voltage.

motovovo · Post by **motovovo** » 27 Dec 2010, 03:01

I had a similar experience with a faulty alternator, cars act weird when they don't get what they want...electrically.

GlennKorec · Post by **GlennKorec** » 27 Dec 2010, 10:04

Recenlty had a similar problem on my car. My neighbor who is a non Volvo tech said low voltage (less than 9-10) volts can cause all sorts of problems with the electronics. Some basic troubleshooting, the battery was not taking a charge. After the battery replacement, all is now normal.

Post by **Ozark Lee** » 27 Dec 2010, 17:27

+1

Low battery voltage causes the TCU to make some really bad decisions. I had an alternator go out on me on the way to the cabin in my Suburban and it got so bad that I thought it was going to shift into reverse by itself on the highway.

...Lee