I just purchased a 1991 TT. It is my first 300ZX and everything is great except for the speedometer. I have been reading the forums and know that the speedometer is a know issue on the Z. The car has a brand new speed sensor so i doubt that is the issue. I have pulled the gauge cluster for inspection. I cannot see anything wrong quite yet. Does any have any ideas on how to diagnose and fix the issue?
Symptoms: -Speedometer is inoperable 98% of the time. -Odometer and trip indicator operate normally - Power steering operates for the first 5 minutes of driving then steering becomes hard and HICAS light illuminates.