1997 Volvo 850 gauges work sometimes - 850 Volvo Cars & Trucks

SOURCE: Speedometer work on and off on a 1997 850 Volvo

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

SOURCE: 1993 volvo 850 heater blower works sometime tell me why?

These models had problems with the blower motor power stage, which is what controls the fan speed, and the blower motors wear out. There a good chance it needs both!

SOURCE: Radio Code for Volvo 850 1997

try 0000 or 1234

SOURCE: 1997 Volvo 850. Car shakes when put into reverse

Check to see you have spark on all plugs.Then check ur fuel system to see if your getting fuel.Then we can assist you.

SOURCE: 96 volvo 850 speedometer somtimes works then it drops to 0

Two questions: Is your odometer working? If not then it's probably a broken gear by the stepper motor that Emissionwiz mentioned. Is your ABS and/or TRACS light on intermittently or constantly. If so that is a common sign your ABS control module has gone or is going bad. This usually happens before the speedometer starts acting up. Either one of these will start intermittently and finally end up with the speedometer not functioning at all, and both are pretty common failures with this model.