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Ron, ASE Certified Technician
Category: Australia Car
Satisfied Customers: 35490
Experience:  ASE Certified Tech
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1990 s4. Speedo only works when brake switch on. Guessing

Customer Question

Hey. 1990 s4. Speedo only works when brake switch on. Guessing bad ground and brake brake back feeding but wondering whether the speed sensor has a ground
Submitted: 1 year ago.
Category: Australia Car
Customer: replied 1 year ago.
driving, no speed. Press brake, speed shows properly. Off brake, speedo to zero.
Customer: replied 1 year ago.
Fuses all good
Expert:  Ron replied 1 year ago.

Hello, my name is ***** ***** I am a professional here at Just Answer. I have noticed that your question was not getting a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.

Can you tell me what make you are working on please? Is this a 1990 Audi? Post back with the make and I will try and help you get this resolved.

Customer: replied 1 year ago.
1990 Porsche 928 s4
Expert:  Ron replied 1 year ago.

Unfortunately I have no good information on the 1990 Porsche so I am going to have to open the question back up for you. If some one can assist you they will respond . Sorry for the delay.