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TSellers 12-17-2007, 07:05 AM Just imported a 1991 HDJ81. I noticed I jump to approx 3200 rpm at 110 km/hr, the needle seems to make a drastic jump when you reach 90km/hr. Naturally I look for an OD switch, which I certainly cannot find anywhere. This is an automatic transmission model, did they make one without an OD switch? Regards, Tom. roscoFJ73 12-18-2007, 04:05 PM Just imported a 1991 HDJ81. I noticed I jump to approx 3200 rpm at 110 km/hr, the needle seems to make a drastic jump when you reach 90km/hr. Naturally I look for an OD switch, which I certainly cannot find anywhere. This is an automatic transmission model, did they make one without an OD switch? Regards, Tom. If you cant get help here ,you may want to try the diesel forum on IH8MUD where the owners of these hang out. You also might want to have a rethink about how you explain whats going on:shaking: Radd Cruisers 12-18-2007, 09:52 PM No switch on that model year for overdrive. Can be a worry if the overdrive clutches or torque converter is slipping, rebuild time then. TSellers 12-19-2007, 10:56 AM Thanks guys, I'll try the other forum. | |