1998 Nissan (Hardbody) single cab with TD27 engine, Mileage 130000km. Speedometer was not working at all. In trying to get a speed indication I had a new speed sensor generator installed early last year. When this didnt work I replaced the faulty speedometer dash board unit with a second hand one (cant get a new unit). This worked till early this year. While testing, we discovered that if the dashboard unit is given a seperate 'speed signal', from a small transformer, it always works. After this it works fine with the speed sensor generator fitted on the car for some time before it fails again. I can always start it working with the seperate 'speed signal'. I have already confirmed that the speed sensor generator is always working even when there is no speed indication.
What could be the problem?
Reponse to EOCKEE and other respndent: The signal in my case is an 8V AC signal tapped from a transormer. Tapping the dash has never helped. Disconnecting and reconnecting the signal on the car has never helped. I have checked the actual circuit and found no shorts. I have in the past even provided completely seperate wiring for the indictor unit. What I can't test is the IC.
have the same problem?
Monday, November 12th, 2007 AT 8:16 AM