1997 Volvo 850 gauges work on an off. - 1997 Volvo 850

Check for bad earth on the dash board,instrument panel ,check senders. And wireing,

Follow the link to the youtube video of the whole job, a very well done video. This is a difficult repair. Alternator Replacement not charging bad noisy etc Volvo 850 S70 Auto...

It's impossible for anyone here to give an estimate because rates and parts availability vary from state to state. I'd call your local Volvo dealer parts department to get an idea of the parts costs or even if they can find one. You may have a better chance of locating the parts in a junk yard.

This is a common problem with 850s. The speedometer is driven electrically, while the odometer is mechanical.

There's a tiny little gear inside the odometer that runs it from a motor; it's no longer tied directly to a speedometer cable like older models. What happens is the gear gets old and brittle and loses teeth, at which point it can no longer turn the odometer.

My wife's '96 850 had the same issue when I got it, and a little internet research turned up the answer above. There are companies that make replacement gears you can buy fairly cheaply, but it does require a fair amount of mechanical aptitude to pull the instrument panel and disassemble the speedometer assembly.

One note of caution that I learned the hard way: you have to take the front cover off the instrument panel, exposing all of the gauges. Be very careful not to disturb the position of those little needles; I ended up messing up the gas gauge, speedometer and temperature gauge, and it took a lot of trial and error to get them put back in so they showed the right readings.

If I recall correctly, I found instructions for doing the gear replacement online, but it's been so long that I don't have the web page(s) I found any more. A lot of times the manufacturer of the replacement gears have instructions on their web sites.

IPD USA sells them and has instructions.

850 Odometer Gear

take the plastic cover off that protects your gauges and tap he needle. sometimes the age of a car can take its toll on just about everything.

call volvo with the part# and serial#. it must say "code" if it says "off" leave the key in position 1 for a few hours and "code will come back"

Do you have ac gauges?You can only check with set of 134a gauges.Hook the red hose of the ac gauges to the large ac port on the high side ac line(it is the small ac line/hose).Do not turn the red knob on (on the ac gauges)If need to hook up low side(blue hose)to the small ac port on the low side line(it is the large ac port).If I can help,let me know.

check the thermostat, it's where the top radiator hose meets the motor in a housing

i cant find a description for p1080 for a 97 volvo 850 sorry

back of engine at the very bottom on the trans where the axle mount