Volvo 940 Visibility problems by year

The defect windshield washer valve allows the windscreen washing water to split between the two hood sprayers, failure always comes during rain or snow when the ability to clean the windshield is critical. Nlm

Owner states there is a crack on the windshield on both driver's side and passenger's side, it spreads while the vehicle is being driven, , blocking view of driver; also, owner had problem repaired, but it returned. *Ak *jb

Windshield washer fluid does not always come out, can hear the pump working but nothing comes out. Please describe details. *Ak