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Ask Mike Kelly Your Own Question
Mike Kelly
Mike Kelly, Auto Service Technician
Category: Car
Satisfied Customers: 5470
Experience:  17 years experience as an auto mechanic, foreign and domestic. 5 years running my own repair business.
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my focus speedo& revcounter goes haywire plus the radio goes

Customer Question

my focus speedo& revcounter goes haywire plus the radio goes very loud also some times when first start up the speedo stays on zero for a couple of miles
Submitted: 4 years ago.
Category: Car
Expert:  Mike Kelly replied 4 years ago.


Hello, welcome. My name is Mike, I will do my very best to
assist you with your question.

Are there any warning lights coming on?
Customer: replied 4 years ago.
no
Expert:  Mike Kelly replied 4 years ago.
The issue that you are describing is consistent with a voltage feed to the vehicle.This can be from the battery having a weak cell,the alternator not putting out enough volts or a ground issue. What I would suggest as a first step is to have the battery and alternator tested. If these Check out good check for loose connections at the battery,battery leading to the starter,and battery leading to the alternator.
Customer: replied 4 years ago.
already done am told all is ok
Expert:  Mike Kelly replied 4 years ago.
Ok for these issues to happen like this,voltage has to be the issue and possibly the signal from the ECU to the vehicle. The ECU is tested with a scan tool not to look for codes. But to test command prompts.
Customer: replied 4 years ago.


booked in for Monday afternoon at auto elec will get back to you monday

Expert:  Mike Kelly replied 4 years ago.
Ok sounds good. Thank you.