How can I repair my Volvo 940 speedometer?
[Editor] Your speedometer or circuit board may vary from the diagrams shown for the 940; the parts needed may also vary. Note that Davide has presented Method 1, the Cable Method, to separate the PCBs and open up the unit. Randy Starkie has presented Method 2, the Needle Method, to do the same.
What do I need to know about my Volvo 940?
It’s a pretty general section, but very useful for servicing your Volvo 940 with the right service interval. This group contains the Volvo 940 service & repair manuals for the engines (redblock and diesel-engines), fuel injection systems and other engine components like the cooling system.
Why is my abs not working on my Volvo 940?
Volvo 940 and 960 instrument clusters suffer from printed circuit foil and solder joint troubles. I’ve had trouble with the ABS and Coolant Loss warning lights not working. The problem has been a break in the printed circuit track feeding those two warning lights.
Where is the service manual on a Volvo 945?
Volvo 945 (5-door estate / stationwagon with 4-cylinder redblock or 6-cylinder diesel engine) Using the Volvo service manual isn’t hard: just look for the subject described below (like the engine, bodywork or cooling system) and click on the link to open the service manual for that subject.
What causes the speedometer on a Volvo to go dead?
Symptoms and Problem: 1991-1992 740/940/960 speedometer dead or erratic with or without odometer functioning or dead. Fault: Shorted capacitors inside speedo and corrosion on the printed circuit board and leads to chips.
How do you remove a capacitor from a Volvo speedometer?
CAPACITOR REMOVAL:Use a good quality soldering gun, small tip, for electronic use. Use a vacuum desoldering pump to clean up the holes. You may need small needle nose pliers to help pull the component leads out of the holes.
Why are the capacitors on my Volvo not working?
Capacitors can fail due to poor quality electrolyte or bad manufacturing: this is an industry-wide problem for many manufacturers using electrolytic capacitors. See BadCaps.netfor details. Volvo had bad capacitors in model years 1991-1992 in their speedometers.