Same problem here. Anything above 20 mph it'll start to shake a little..it'll smooth out at 60....then anything above 60 it's fine. And then there is the slow down jump. IF i start to slowdown from about 45 to a stop, the needle looks like it wants to break right out of the casing. It goes from 0 to 140 and back and forth and back and forth. Then when i hit about 8mph it calms right down.
I think it's about 5 mph to high anyways...Looking at changing the speedo cable itself...or do u think lubing it would fix that as well?
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1989 Mustang
5.0 Conversion, Full Saleen ground effects and spoiler, '94 saleen decal set, '93 Saleen Seats, Black interior from a '93, Steeda quadrant, smog pump delete, a/c delete, Steeda Tri-Ax shifter, '97 rear differential, aluminum driveshaft, 5 lug conversion, '97 rear disc brakes, southside upper and lower control arms, '99 GT Anniversary wheels, flowtech longtubes, flowtech offroad H-pipe, saleen lowering springs, kyb shocks, caster/camber plates
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