My 92 940 speedometer quits rising when I get past 45 mph. Also the ABS light is on all the time. I have cleaned the front ABS sensors and the wiring looks good.
I suspect the rear abs sensor which also controls the speedo. Does anyone have experience with these problems?

It was new. Turned out to be the ecu. Put in a used one and everything worked.

I acquired a 92 940 turbo recently. I have no history on it. it had been abandoned. First thing i did was pull the in tank fuel pump thinking the tank might need cleaning. The pump was dry and split so i installed another one. I cant get any power to the pump. I pulled the relay out of a running car...