Volvo 940 - Speedometer Fault - volvoman50

Hi all my dad's 1990 GLE 940 has developed a fault on speedometer where it only works intermittently mainly not at all. Believe it is an electrical problem. Has any come across this and if so how to fix it thanks.

Volvo 940 - Speedometer Fault - elekie&a/c doctor

It is usually the speedo head itself that becomes faulty on these.Suggest also you check the speedo sensor on the rear axle and its connector found in the rear boot area.

Volvo 940 - Speedometer Fault - injection doc

also check the axle oil too see if its turned silver ! the diff bearings fail and impregnate the oil with metal stopping the pick up sensor from working !