Question about Volvo S70

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Starts off with odometer and speedometer not working. now the check engine light comes on. just bought the car and obviously guy lied to us

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Hello,

Thanks for using FixYa.

The Odometer on the vehicle works hand in hand with the speedometer. If the Speedometer don't work, the odometer will not work too. If you have bought the vehicle from an unscrupulous person, its possible that they disabled the speedometer to minimize the odometer reading on the vehicle while they use it (reason for this is that, a vehicle with lower odometer readings will most likely be sold easier).

There are two possible reasons why the speedometer doesn't work.

1. The previous owner disconnected/cut the cable that sends signal from the speed sensor to the speedometer. If this is the case, all you need to do is reconnect the wires.

2. The speed sensor might be busted. All you can do to fix this is to replace the speed sensor. The cheapest way for you to find one is to go to a junk yard and salvage one. If you don't want the hassle of doing this, you can always get this from the dealership or a local shop. It will cost you more though.

With this two possibilities, you need to have a professional diagnose the car and fix it for you to prevent any more issues in the future.

I hope this helps. Thanks and good day.
HotRatchet

Posted on Jul 14, 2010

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