Volvo 850 - Recent Questions, Troubleshooting & Support - Page 8

Check vacuum line and cable from the cruise unit. You need a factory scan tool to check it beyond that unless you are real good with a volt meter.

If the odometer stopped but it shows speed it is not the cable. There is a small plastic gear in the speedometer which will strip if you reset the trip odometer while the car is moving. Any speedo shop can repair it

Which sensor??

1-2-4-5-3

It is a fixed position distributor and cannot be changed. The engine management system controls timing advance.

You need the special square drive tool to take the tension off the pulley, It fits in the square recess on the tensioner

You have a bad heater core.

Not a code. Does not exist on any of the charts I have looked at.

Purge solenoid is located on the radiator fan housing on the driver side. Has a vacuum line from the throttle assemble to the solenoid, a 2 wire connector and a line that goes down and to the pass side of the vehicle.

You have power energizing the starter solenoid. You need to disconnect the small wire with the female connector and trace it back to the ignition switch. You either have a a bad wire or wires or a bad ignition switch. You need to isolate the wire and see if it has power when it is disconnected from the ignition switch

It is located just to the rear of the turbo on the exhaust pipe. It is the first component after the turbo. Should have an 02 sensor just in front of it.

In the center console glove box under a cover marked OBD

Should be in the center console glove box under a cover marked OBD

What solenoid are you talking about?

Need to remove the instrument cluster, disassemble and replace the stripped gear in the speedometer drive motor.

Disconnect the battery. Hook up an a/c service machine and evacuate the system. Remove the serpentine belt. Removethe power steering pump, alternator and bracket. Remove the a/c compressor and replace it. Reassemble and vacuum out the a/c system. Recharge the a/c and fill the power steering.

Most auto stereo shops have the adapters. You should also be able to find them online. They adapt the existing wiring plug in the vehicle to the stereo without cutting anything.

After I bought my '96 850, I found it had the same problem. In my case the speedometer worked fine, but not the odometer. A little research on the internet revealed that it's a common problem with these models. There's a motor that drives the odometer separately from the speedometer, and the weak link in the chain is a tiny gear that turns the odometer when the motor runs. That gear is easily broken and even one missing tooth will disable your odometer. The fix is relatively straight-forward, but requires you to remove the instrument panel and disassemble it in order to get to the motor housing and the broken gear. You won't have any trouble finding replacement parts on eBay that are much better made and will last you the rest of the life of the car. The difficulty level on this is about medium, but be careful when you've got the instrument panel disassembled; I wasn't cautious enough and ended up with a couple of my indicators out of alignment; my tachometer read zero when it was idling, and my fuel gauge only went up to 17 gallons when it was full, so I had to take it all apart again to reposition the gauges to get them to read correctly.

Weak or sagging spring, bad bushing possible bad Nivomat shock if so equipped. Measure right height at the wheel arches. if it is very low on that wheel have someone versed in Volvo look at it and see if it has a Nivomat shock. If the wheel is tilted in either the ride level has dropped on that side caused by something supporting the body like a spring or load leveling shock (nivomat) or a bushing has gone bad allowing the lower arm to move out or the upper arm to move in. Assuming there has been no body damage those are your only choices. Try a shop that does chassis work or a high end front end/suspension shop. Whoever is looking at this is missing something

Line pressure should be 42psi