by Richie O » Tue Apr 05, 2011 7:16 pm
Mark, this may be up your alley. My 92 has the " some times " works speedo. When it has acted up I have wiggled, unplugged and frigged with the VSS connection. That does not correct the issue. I would say the speedo works about 3/4 of the time. Where does the wire harness route go that has that wire in it? I know it goes from VSS to PCM, but what group is it? I am thinking its a bad connection somewhere that will sometimes loose connection. I don't want to go fishing around and frig up other things while trying to fix this one. What say you?
1989 W250 727, 3.07 L/S, S300, P/S Intercooler, Stans exaust, Pump adjustments, 127k miles,297 hp
1993 W250 extended cab, rag, 4.10 l/s, 6x16's, HTT 62/71/14 piston l/p, Isspro EV series tach, fuel pressure, boost, oil pres, water temp, volt, pryo, 132k/ 301 hp
1992 W250 with NV4500, 3.54's, 16cm 60mm GDS H1C, ground stock cone, Isspro tach, pryo, boost, fuel pressure, slow, rusty, dented,180k