Dead Speedo

Technical questions and answers about the Mazda Bongo

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Mack
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Location: Gloucester

Dead Speedo

Post by Mack » Fri Jul 05, 2013 9:36 am

Hi folks, My speedo seems to have packed in. Any idea how I might fix it?
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g8dhe
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Re: Dead Speedo

Post by g8dhe » Fri Jul 05, 2013 9:50 am

Does the vehicle run normally even if not indicating the speed ? The pulses that drive the speedo also feed onto the ECU and if those are missing the ECU won't be happy! If its just the indicated speed then it maybe the actual speedometer itself that is faulty, if the pulses aren't getting thru to the speedometer and ECU then it maybe the sensor that has stopped working.
Geoff
2001 Aero V6, AFT, full side conversion.
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Tony x
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Re: Dead Speedo

Post by Tony x » Fri Jul 05, 2013 11:32 pm

If you have a MPH only speedo - one that goes to 180mph, you could try removing the kmh to mph chip behind the speedo as this may have gone.
Is your odometer working?
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Mack
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Location: Gloucester

Re: Dead Speedo

Post by Mack » Tue Jul 09, 2013 11:22 am

Sorry folks, I meant my fuel gauge - sorry senior moment! Isn't there some wiring under drivers seat?
francophile1947
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Re: Dead Speedo

Post by francophile1947 » Tue Jul 09, 2013 12:27 pm

Fuel gauge is usually a bad earth. Loads of threads on the matter already exist, but I just ran a new wire from the tank flange to the bodywork - a five minute job and saves stripping everything out to get to the flap in the floor.
John
(Evidence that intelligent life exists in the universe, is that it hasn't tried to contact us)
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