Transmission Overdrive Relay May Fail on Volvo 940

The transmission overdrive relay often fails, preventing the transmission from shifting into overdrive

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Average mileage: 150,005 (92,000–209,456)
5 model years affected: 1991, 1992, 1993, 1994, more1995
23 people reported this problem
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Viewing 1 - 9 of 9 problem details
when accelerating, cannot get the car to go over 40mph,and the transmission will not shift. There is an arrow light on, on the dashboard, when turning turbo on, cannot tell if the turbo engine is on, except for the fact it will go to 45mph.
1992 Volvo 940 187,000 mi,
92 Volvo 940 GL Transmission won't shift up into high (overdrive?)If I continue driving, at 14 miles it will finally shift. Last summer when it was hot it would begin shifting up right away. Jim
1994 Volvo 940 140,000 mi,
Overdrive would normally kick on at 45 mph but at times its will not shift into overdrive and if I try to use the overdrive button to turn overdrive off and back on overdrive won't work so I have to turn off my car to reset it to make it work. Is this an overdrive solenoid issue? Or Overdrive relay?
1994 Volvo 940 92,000 mi,
Tranny fails to upshift into overdrive,at all.
had this rolem.replaced relay still no shift
1992 Volvo 940 125,000 mi,
Transmission overdrive relay may fail
2004 Volvo 940 GL-Top gasket
Same issue with the transmission overdrive. Bought the car 2 years ago from a private party, and it starting acting up about 3 months after I purchased vehicle.
1991 Volvo 940 156,000 mi,
Intermittent won't shift into overdrive, not fixed yet...